Connect with us

Nano Technology

Scientists discover new class of semiconducting entropy-stabilized materials

Avatar

Published

on

Home > Press > Scientists discover new class of semiconducting entropy-stabilized materials

Crystal structure of GeSnPbSSeTe, a semiconducting entropy-stabilized chalcogenide alloy. The yellow atoms are cations (Ge, Sn, Pb) and the blue atoms are anions (S, Se, Te). The difference in lightness corresponds to different species of the anions and cations. The configurational entropy from the disorder of both the anion and the cation sublattices stabilizes the single-phase rocksalt solid solution, as demonstrated from first-principles calculations as well as experimental synthesis and characterization. CREDIT
Logan Williams, Emmanouil Kioupakis, and Zihao Deng, Dept. of Materials Science & Engineering, University of Michigan
Crystal structure of GeSnPbSSeTe, a semiconducting entropy-stabilized chalcogenide alloy. The yellow atoms are cations (Ge, Sn, Pb) and the blue atoms are anions (S, Se, Te). The difference in lightness corresponds to different species of the anions and cations. The configurational entropy from the disorder of both the anion and the cation sublattices stabilizes the single-phase rocksalt solid solution, as demonstrated from first-principles calculations as well as experimental synthesis and characterization. CREDIT
Logan Williams, Emmanouil Kioupakis, and Zihao Deng, Dept. of Materials Science & Engineering, University of Michigan

Abstract:
Semiconductors are important materials in numerous functional applications such as digital and analog electronics, solar cells, LEDs, and lasers. Semiconducting alloys are particularly useful for these applications since their properties can be engineered by tuning the mixing ratio or the alloy ingredients. However, the synthesis of multicomponent semiconductor alloys has been a big challenge due to thermodynamic phase segregation of the alloy into separate phases. Recently, University of Michigan researchers Emmanouil (Manos) Kioupakis and Pierre F. P. Poudeu, both in the Materials Science and Engineering Department, utilized entropy to stabilize a new class of semiconducting materials, based on GeSnPbSSeTe high-entropy chalcogenide alloys,[1] a discovery that paves the way for wider adoption of entropy-stabilized semiconductors in functional applications. Their article, “Semiconducting high-entropy chalcogenide alloys with ambi-ionic entropy stabilization and ambipolar doping” was recently published in the journal Chemistry of Materials.

Scientists discover new class of semiconducting entropy-stabilized materials


Ann Arbor, MI | Posted on July 31st, 2020

Entropy, a thermodynamic quantity that quantifies the degree of disorder in a material, has been exploited to synthesize a vast array of novel materials by mixing eachcomponent in an equimolar fashion, from high-entropy metallic alloys to entropy-stabilized ceramics. Despite having a large enthalpy of mixing, these materials can surprisingly crystalize in a single crystal structure, enabled by the large configurational entropy in the lattice. Kioupakis and Poudeu hypothesized that this principle of entropy stabilization can be applied to overcome the synthesis challenges of semiconducting alloys that prefer to segregation into thermodynamically more stable compounds. They tested their hypothesis on a 6-component II-VI chalcogenide alloy derived from the PbTe structure by mixing Ge, Sn, and Pb on the cation site, and S, Se, and Te on the anion site.

Using high throughput first-principles calculations, Kioupakis uncovered the complex interplay between the enthalpy and entropy in GeSnPbSSeTe high-entropy chalcogenide alloys. He found that the large configurational entropy from both anion and cation sublattices stabilizes the alloys into single-phase rocksalt solid solutions at the growth temperature. Despite being metastable at room temperature, these solid solutions can be preserved by fast cooling under ambient conditions. Poudeu later verified the theory predictions by synthesizing the e

quimolar composition (Ge1/3Sn1/3Pb1/3S1/3Se1/3Te1/3) by a two-step solid-state reaction followed by fast quenching in liquid nitrogen. The synthesized power showed well-defined XRD patterns corresponding to a pure rocksalt structure. Furthermore, they observed reversible phase transition between single-phase solid solution and multiple-phase segregation from DSC analysis and temperature dependent XRD, which is a key feature of entropy stabilization.

What makes high-entropy chalcogenide intriguing is their functional properties. Previously discovered high-entropy materials are either conducting metals or insulating ceramics, with a clear dearth in the semiconducting regime. Kioupakis and Poudeu found that. the equimolar GeSnPbSSeTe is an ambipolarly dopable semiconductor, with evidence from a calculated band gap of 0.86 eV and sign reversal of the measured Seebeck coefficient upon p-type doping with Na acceptors and n-type doping with Bi donors. The alloy also exhibits an ultralow thermal conductivity that is nearly independent of temperature. These fascinating functional properties make GeSnPbSSeTe a promising new material to be deployed in electronic, optoelectronic, photovoltaic, and thermoelectric devices.

Entropy stabilization is a general and powerful method to realize a vast array of materials compositions. The discovery of entropy stabilization in semiconducting chalcogenide alloys by the team at UM is only the tip of the iceberg that can pave the way for novel functional applications of entropy-stabilized materials.

###

This study was supported by the National Science Foundation through Grant No. DMR-1561008 (first-principles calculations, synthesis, and characterization) and the Department of Energy, Office of Basic Energy Sciences under Award # DE-SC-00018941 (electronic and thermal transport measurements). The DFT calculations used resources of the National Energy Research Scientific Computing (NERSC) Center, a DOE Office of Science User Facility supported under Contract No. DE-AC02-05CH11231.Related conference presentation:

Zihao Deng, Alan Olvera, Joseph Casamento, Juan Lopez, Logan Williams, Ruiming Lu, Guangsha Shi, Pierre F. P. Poudeu, and Emmanouil Kioupakis. Computational prediction and experimental discovery of semiconducting high-entropy chalcogenide alloys, MRS Fall Meeting 2019, EL04.01.05

####

For more information, please click here

Contacts:
Emmanouil (Manos) Kioupakis
734-945-4456

Copyright © University of Michigan

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

Read the related publication:

Related News Press

News and information

Way, shape and form: Synthesis conditions define the nanostructure of manganese dioxide July 31st, 2020

New printing process advances 3D capabilities: Technology aims to improve quality of products used in business, industry and at home July 31st, 2020

TU Graz researchers synthesize nanoparticles tailored for special applications July 31st, 2020

Nanoreactor strategy generates superior supported bimetallic catalysts July 31st, 2020

Display technology/LEDs/SS Lighting/OLEDs

Printed perovskite LEDs: An innovative technique towards a new standard process of electronics manufacturing June 12th, 2020

Transparent graphene electrodes might lead to new generation of solar cells: New roll-to-roll production method could enable lightweight, flexible solar devices and a new generation of display screens June 8th, 2020

Pushing Photons: Metasurface design methods can make LED light act more like lasers June 3rd, 2020

NUS researchers develop stretchable, self-healing and illuminating material for ‘invincible’ light-emitting devices: Promising applications include damage-proof flexible display screens and illuminating electronic skin for autonomous soft robots May 31st, 2020

Govt.-Legislation/Regulation/Funding/Policy

Physicists find misaligned carbon sheets yield unparalleled properties July 31st, 2020

Nanoreactor strategy generates superior supported bimetallic catalysts July 31st, 2020

Study: Mapping crystal shapes could fast-track 2D materials: Experts call for global effort to clear hurdles to mass production July 27th, 2020

Silver-plated gold nanostars detect early cancer biomarkers: New optical sensing platform can detect genomic cancer biomarkers directly in patient tissues July 24th, 2020

Possible Futures

Way, shape and form: Synthesis conditions define the nanostructure of manganese dioxide July 31st, 2020

New printing process advances 3D capabilities: Technology aims to improve quality of products used in business, industry and at home July 31st, 2020

TU Graz researchers synthesize nanoparticles tailored for special applications July 31st, 2020

Nanoreactor strategy generates superior supported bimetallic catalysts July 31st, 2020

Chip Technology

TU Graz researchers synthesize nanoparticles tailored for special applications July 31st, 2020

Porous graphene ribbons doped with nitrogen for electronics and quantum computing July 10th, 2020

Scaling up the quantum chip: MIT engineers develop a hybrid process that connects photonics with ‘artificial atoms,’ to produce the largest quantum chip of its type July 10th, 2020

A path to new nanofluidic devices applying spintronics technology: Substantial increase in the energy conversion efficiency of hydrodynamic power generation via spin currents July 3rd, 2020

Announcements

Way, shape and form: Synthesis conditions define the nanostructure of manganese dioxide July 31st, 2020

New printing process advances 3D capabilities: Technology aims to improve quality of products used in business, industry and at home July 31st, 2020

TU Graz researchers synthesize nanoparticles tailored for special applications July 31st, 2020

Nanoreactor strategy generates superior supported bimetallic catalysts July 31st, 2020

Photonics/Optics/Lasers

Brazilian researchers develop an optical fiber made of gel derived from marine algae: Edible, biocompatible and biodegradable, these fibers have potential for various medical applications. The results are described in the journal Scientific Reports. July 24th, 2020

Manipulating non-magnetic atoms in a chromium halide enables tuning of magnetic properties: New approach creates synthetic layered magnets with unprecedented level of control over their magnetic properties July 24th, 2020

Photochromic bismuth complexes show great promise for optical memory elements July 24th, 2020

Project creates more powerful, versatile ultrafast laser pulse: Institute of Optics research sets record for shortest laser pulse for newly developed technology, work that has important applications in engineering and biomedicine July 24th, 2020

Source: http://www.nanotech-now.com/news.cgi?story_id=56276

Nano Technology

SEMI Partners with GLOBALFOUNDRIES to Offer Apprenticeship Program Aimed at Building the Electronics Talent Pipeline

Avatar

Published

on

Home > Press > SEMI Partners with GLOBALFOUNDRIES to Offer Apprenticeship Program Aimed at Building the Electronics Talent Pipeline

Abstract:
SEMI, the industry association serving the global electronics design and manufacturing supply chain, today launched a new collaborative apprenticeship program to make it easier for companies to offer training and for more workers to pursue careers in electronics. The competency-based SEMI Industry Approved Apprenticeship Program (IAAP) is designed to identify skills gaps and deliver targeted training that efficiently meets industry employers’ hiring needs.

SEMI Partners with GLOBALFOUNDRIES to Offer Apprenticeship Program Aimed at Building the Electronics Talent Pipeline


Milpitas, CA | Posted on August 11th, 2020

SEMI developed the IAAP in partnership with GLOBALFOUNDRIES® (GF®), the largest pure-play semiconductor foundry in the U.S. and the world’s leading specialty foundry. Designed to be scaled to meet industry demand for technicians, the program leverages SEMI’s Unified Competency Model (UCM), which was formed with industry input as a new skills standard and is endorsed by the U.S. Department of Labor Employment and Training Administration (USDOL-ETA). The UCM is posted on DOL-ETA’s Competency Model Clearinghouse.
“GLOBALFOUNDRIES has long been committed to building educational partnerships that benefit both our employees and the region, particularly in developing a highly skilled workforce to ensure our industry and the U.S. remains at the forefront of innovation for years to come,” said Ron Sampson, senior vice president and general manager of U.S. Fab Operations at GF. “Through SEMI’s new Industry Approved Apprenticeship Program, we look forward to helping our employees advance their careers, while playing an important role in workforce training and boosting the semiconductor manufacturing talent pool.”

“The IAAP is designed to help the microelectronics industry and advanced manufacturers overcome the talent shortage by enabling companies to fill skills gaps more effectively and at lower cost,” said Mike Russo, vice president of Industry Advancement and Government Programs at SEMI. “SEMI will continue to work to ensure the IAAP lays a path for employers to pursue government-registered apprenticeship programs and qualify for reimbursement of related training expenses.”

Hudson Valley Community College (HVCC) will offer the apprenticeship program courses, the first certified under the SEMI Certs program, online. The course curriculum is aligned with UCM to ensure course curriculum supports the development of skills required by the electronics industry.

“We are excited to be a partner in this pilot program that is expected to graduate approximately 50 apprentices by the end of this year and more than 100 apprentices by the end of 2021,” said Roger Ramsammy, president of Hudson Valley Community College. “Hudson Valley’s participation in the SEMI Certs program has ensured our courses are aligned with industry requirements and that participants receive college credits to help them pursue related degrees and support career laddering. In addition, we hope the program will ultimately be a New York State Registered Apprenticeship Program, providing access to tuition reimbursement for Required Technical Training.”

Along with GLOBALFOUNDRIES and HVCC, SEMI partnered with SUNY Polytechnic Institute, the Manufacturing Association of Central New York (MACNY) and the Center for Economic Growth (CEG), a nonprofit economic and business development organization that serves as the primary point of contact for businesses interested in growing in or moving to New York’s eight-county capital region, to develop the apprenticeship program.

The apprentice program marks a milestone in the evolution of SEMI Works™, the first U.S. electronics workforce development program developed under a partnership with the National Science Foundation Advanced Technological Education (NSF-ATE) Program, the USDOL-ETA and academic partner SUNY Polytechnic Institute in New York.

####

About SEMI
SEMI® connects more than 2,400 member companies and 1.3 million professionals worldwide to advance the technology and business of electronics design and manufacturing. SEMI members are responsible for the innovations in materials, design, equipment, software, devices, and services that enable smarter, faster, more powerful, and more affordable electronic products. Electronic System Design Alliance (ESD Alliance), FlexTech, the Fab Owners Alliance (FOA) and the MEMS & Sensors Industry Group (MSIG) are SEMI Strategic Technology Communities, defined communities within SEMI focused on specific technologies. Visit www.semi.org to learn more, contact one of our worldwide offices, and connect with SEMI on LinkedIn and Twitter.

For more information, please click here

Contacts:
Michael Hall/SEMI

Phone: 1.408.943.7988

Copyright © SEMI

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Advance in programmable synthetic materials: Reading sequence of metal atoms in MOFs allows encoding of multiple chemical functions August 11th, 2020

Materials science researchers develop first electrically injected laser: The diode laser uses semiconducting material germanium tin and could improve micro-processing speed and efficiency at much lower costs August 11th, 2020

Highly sensitive dopamine detector uses 2D materials August 7th, 2020

Kavli Lectures: The art of building small and innovating for industrial impact August 7th, 2020

Jobs

March 17th, 2020

Arrowhead Pharmaceuticals Reports Inducement Grants under NASDAQ Marketplace Rule 5635(c)(4) March 29th, 2019

Arrowhead Pharmaceuticals Reports Inducement Grants under NASDAQ Marketplace Rule 5635(c)(4) December 18th, 2018

Graphene shows unique potential to exceed bandwidth demands of future telecommunications October 12th, 2018

Possible Futures

Materials science researchers develop first electrically injected laser: The diode laser uses semiconducting material germanium tin and could improve micro-processing speed and efficiency at much lower costs August 11th, 2020

May the force be with you: Detecting ultrafast light by its force: From cell phones to solar cells – research has implications for improvements in a wide range of technologies August 7th, 2020

High-sensitivity atomic force microscopy opens up for photosensitive materials August 7th, 2020

Researchers capture X-ray images with unprecedented speed and resolution: Ghost imaging approach could enable detailed movies of the heart with low-dose x-rays August 7th, 2020

Announcements

Advance in programmable synthetic materials: Reading sequence of metal atoms in MOFs allows encoding of multiple chemical functions August 11th, 2020

Materials science researchers develop first electrically injected laser: The diode laser uses semiconducting material germanium tin and could improve micro-processing speed and efficiency at much lower costs August 11th, 2020

High-sensitivity atomic force microscopy opens up for photosensitive materials August 7th, 2020

Researchers capture X-ray images with unprecedented speed and resolution: Ghost imaging approach could enable detailed movies of the heart with low-dose x-rays August 7th, 2020

Alliances/Trade associations/Partnerships/Distributorships

EU Team Demonstrates Full Data-Transfer Silicon Photonics Module Delivering 100 Gb/s and Develops Building Blocks for Tb/s: COSMICC Project Breakthroughs ‘Will Answer Tremendous Market Needs with a Target Cost per Bit that Traditional Wavelength-Division Multiplexing Transceivers June 23rd, 2020

BNNano and Ruhl Strategic Partners Align for Nanotube Market Growth Ruhl to Leverage Strategic Acumen and Ecosystem Network of Advanced Materials & Technology Companies to Accelerate Growth for BNNano March 9th, 2020

New European Project to Fast-Track Adoption Of Cyber-Physical Systems (CPS) by SMEs: DigiFed to Demonstrate Potential of CPS Digital Technologies in Hardware Security, Human-Machine Interaction, and Autonomy for Small & Midsized Companies January 29th, 2020

American Chemical Society names Dr. James Milne head of its Publications Division January 24th, 2020

Source: http://www.nanotech-now.com/news.cgi?story_id=56291

Continue Reading

Nano Technology

Materials science researchers develop first electrically injected laser: The diode laser uses semiconducting material germanium tin and could improve micro-processing speed and efficiency at much lower costs

Avatar

Published

on

Home > Press > Materials science researchers develop first electrically injected laser: The diode laser uses semiconducting material germanium tin and could improve micro-processing speed and efficiency at much lower costs

Fisher Yu, University of Arkansas CREDIT
University of Arkansas
Fisher Yu, University of Arkansas CREDIT
University of Arkansas

Abstract:
Materials science researchers, led by electrical engineering professor Shui-Qing “Fisher” Yu, have demonstrated the first electrically injected laser made with germanium tin.

Materials science researchers develop first electrically injected laser: The diode laser uses semiconducting material germanium tin and could improve micro-processing speed and efficiency at much lower costs


Fayetteville, AR | Posted on August 11th, 2020

Used as a semiconducting material for circuits on electronic devices, the diode laser could improve micro-processing speed and efficiency at much lower costs.

In tests, the laser operated in pulsed conditions up to 100 kelvins, or 279 degrees below zero Fahrenheit.

“Our results are a major advance for group-IV-based lasers,” Yu said. “They could serve as the promising route for laser integration on silicon and a major step toward significantly improving circuits for electronics devices.”

The research is sponsored by the Air Force Office of Scientific Research, and the findings have been published in Optica, the journal of The Optical Society. Yiyin Zhou, a U of A doctoral student in the microelectronics-photonics program authored the article. Zhou and Yu worked with colleagues at several institutions, including Arizona State University, the University of Massachusetts Boston, Dartmouth College in New Hampshire and Wilkes University in Pennsylvania. The researchers also collaborated with Arktonics, an Arkansas semiconductor equipment manufacturer.

The alloy germanium tin is a promising semiconducting material that can be easily integrated into electronic circuits, such as those found in computer chips and sensors. The material could lead to the development of low-cost, lightweight, compact and low power-consuming electronic components that use light for information transmission and sensing.

Yu has worked with germanium tin for many years. Researchers in his laboratory have demonstrated the material’s efficacy as a powerful semiconducting alloy. After reporting the fabrication of a first-generation, “optically pumped” laser, meaning the material was injected with light, Yu and researchers in his laboratory continue to refine the material.

####

For more information, please click here

Contacts:
Fisher Yu
479-575-7265

Copyright © University of Arkansas

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Advance in programmable synthetic materials: Reading sequence of metal atoms in MOFs allows encoding of multiple chemical functions August 11th, 2020

SEMI Partners with GLOBALFOUNDRIES to Offer Apprenticeship Program Aimed at Building the Electronics Talent Pipeline August 11th, 2020

Highly sensitive dopamine detector uses 2D materials August 7th, 2020

Kavli Lectures: The art of building small and innovating for industrial impact August 7th, 2020

Possible Futures

SEMI Partners with GLOBALFOUNDRIES to Offer Apprenticeship Program Aimed at Building the Electronics Talent Pipeline August 11th, 2020

May the force be with you: Detecting ultrafast light by its force: From cell phones to solar cells – research has implications for improvements in a wide range of technologies August 7th, 2020

High-sensitivity atomic force microscopy opens up for photosensitive materials August 7th, 2020

Researchers capture X-ray images with unprecedented speed and resolution: Ghost imaging approach could enable detailed movies of the heart with low-dose x-rays August 7th, 2020

Chip Technology

Kavli Lectures: The art of building small and innovating for industrial impact August 7th, 2020

Tiniest secrets of integrated circuits revealed with new imaging technique August 5th, 2020

When Dirac meets frustrated magnetism August 3rd, 2020

TU Graz researchers synthesize nanoparticles tailored for special applications July 31st, 2020

Optical computing/Photonic computing

May the force be with you: Detecting ultrafast light by its force: From cell phones to solar cells – research has implications for improvements in a wide range of technologies August 7th, 2020

Photochromic bismuth complexes show great promise for optical memory elements July 24th, 2020

Scaling up the quantum chip: MIT engineers develop a hybrid process that connects photonics with ‘artificial atoms,’ to produce the largest quantum chip of its type July 10th, 2020

A Tremendous Recognition’ Engineer Jonathan Klamkin earns prestigious award from DARPA June 23rd, 2020

Sensors

Highly sensitive dopamine detector uses 2D materials August 7th, 2020

Bosch launches longevity program for industrial and IoT applications: High-performance accelerometer, IMU and pressure sensor with 10-year availability July 23rd, 2020

Solid-state intramolecular motions in continuous fibers for fluorescent humidity sensor July 16th, 2020

Single-spin electron paramagnetic resonance spectrum with kilohertz spectral resolution June 19th, 2020

Discoveries

Advance in programmable synthetic materials: Reading sequence of metal atoms in MOFs allows encoding of multiple chemical functions August 11th, 2020

May the force be with you: Detecting ultrafast light by its force: From cell phones to solar cells – research has implications for improvements in a wide range of technologies August 7th, 2020

High-sensitivity atomic force microscopy opens up for photosensitive materials August 7th, 2020

Researchers capture X-ray images with unprecedented speed and resolution: Ghost imaging approach could enable detailed movies of the heart with low-dose x-rays August 7th, 2020

Announcements

Advance in programmable synthetic materials: Reading sequence of metal atoms in MOFs allows encoding of multiple chemical functions August 11th, 2020

SEMI Partners with GLOBALFOUNDRIES to Offer Apprenticeship Program Aimed at Building the Electronics Talent Pipeline August 11th, 2020

High-sensitivity atomic force microscopy opens up for photosensitive materials August 7th, 2020

Researchers capture X-ray images with unprecedented speed and resolution: Ghost imaging approach could enable detailed movies of the heart with low-dose x-rays August 7th, 2020

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters

Advance in programmable synthetic materials: Reading sequence of metal atoms in MOFs allows encoding of multiple chemical functions August 11th, 2020

May the force be with you: Detecting ultrafast light by its force: From cell phones to solar cells – research has implications for improvements in a wide range of technologies August 7th, 2020

High-sensitivity atomic force microscopy opens up for photosensitive materials August 7th, 2020

Researchers capture X-ray images with unprecedented speed and resolution: Ghost imaging approach could enable detailed movies of the heart with low-dose x-rays August 7th, 2020

Photonics/Optics/Lasers

Layer of nanoparticles could improve LED performance and lifetime August 7th, 2020

May the force be with you: Detecting ultrafast light by its force: From cell phones to solar cells – research has implications for improvements in a wide range of technologies August 7th, 2020

Scientists discover new class of semiconducting entropy-stabilized materials July 31st, 2020

Project creates more powerful, versatile ultrafast laser pulse: Institute of Optics research sets record for shortest laser pulse for newly developed technology, work that has important applications in engineering and biomedicine July 24th, 2020

Source: http://www.nanotech-now.com/news.cgi?story_id=56292

Continue Reading

Nano Technology

Advance in programmable synthetic materials: Reading sequence of metal atoms in MOFs allows encoding of multiple chemical functions

Avatar

Published

on

Home > Press > Advance in programmable synthetic materials: Reading sequence of metal atoms in MOFs allows encoding of multiple chemical functions

Rods of multivariate MOFs (left) can be programmed with different metal atoms (colored balls) to do a series of chemical tasks, such as controlled drug release, or to encode information like the ones and zeros in a digital computer. CREDIT
UC Berkeley image by Omar Yaghi and Zhe Ji
Rods of multivariate MOFs (left) can be programmed with different metal atoms (colored balls) to do a series of chemical tasks, such as controlled drug release, or to encode information like the ones and zeros in a digital computer. CREDIT
UC Berkeley image by Omar Yaghi and Zhe Ji

Abstract:
Artificial molecules could one day form the information unit of a new type of computer or be the basis for programmable substances. The information would be encoded in the spatial arrangement of the individual atoms – similar to how the sequence of base pairs determines the information content of DNA, or sequences of zeros and ones form the memory of computers.

Advance in programmable synthetic materials: Reading sequence of metal atoms in MOFs allows encoding of multiple chemical functions


Berkeley, CA | Posted on August 11th, 2020

Researchers at the University of California, Berkeley, and Ruhr-Universität Bochum (RUB) have taken a step towards this vision. They showed that atom probe tomography can be used to read a complex spatial arrangement of metal ions in multivariate metal-organic frameworks.

Metal-organic frameworks (MOFs) are crystalline porous networks of multi-metal nodes linked together by organic units to form a well-defined structure. To encode information using a sequence of metals, it is essential to be first able to read the metal arrangement. However, reading the arrangement was extremely challenging. Recently, the interest in characterizing metal sequences is growing because of the extensive information such multivariate structures would be able to offer.

Fundamentally, there was no method to read the metal sequence in MOFs. In the current study, the research team has successfully done so by using atom probe tomography (APT), in which the Bochum-based materials scientist Tong Li is an expert. The researchers chose MOF-74, made by the Yaghi group in 2005, as an object of interest. They designed the MOFs with mixed combinations of cobalt, cadmium, lead, and manganese, and then decrypted their spatial structure using APT.

Li, professor and head of the Atomic-Scale Characterisation research group at the Institute for Materials at RUB, describes the method together with Dr. Zhe Ji and Professor Omar Yaghi from UC Berkeley in the journal Science, published online on August 7, 2020.

Just as sophisticated as biology

In the future, MOFs could form the basis of programmable chemical molecules: for instance, an MOF could be programmed to introduce an active pharmaceutical ingredient into the body to target infected cells and then break down the active ingredient into harmless substances once it is no longer needed. Or MOFs could be programmed to release different drugs at different times.

“This is very powerful, because you are basically coding the behavior of molecules leaving the pores,” Yaghi said.

They could also be used to capture CO2 and, at the same time, convert the CO2 into a useful raw material for the chemical industry.

“In the long term, such structures with programmed atomic sequences can completely change our way of thinking about material synthesis,” write the authors. “The synthetic world could reach a whole new level of precision and sophistication that has previously been reserved for biology.”

###

The work was supported by the Center of Excellence for Nanomaterials and Clean Energy Applications at King Abdulaziz City for Science and Technology.

####

For more information, please click here

Contacts:
Robert Sanders
510-915-3097

@UCBerkeley

Copyright © University of California, Berkeley

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Materials science researchers develop first electrically injected laser: The diode laser uses semiconducting material germanium tin and could improve micro-processing speed and efficiency at much lower costs August 11th, 2020

SEMI Partners with GLOBALFOUNDRIES to Offer Apprenticeship Program Aimed at Building the Electronics Talent Pipeline August 11th, 2020

Highly sensitive dopamine detector uses 2D materials August 7th, 2020

Kavli Lectures: The art of building small and innovating for industrial impact August 7th, 2020

Chemistry

Kavli Lectures: The art of building small and innovating for industrial impact August 7th, 2020

Sustainable chemistry at the quantum level: University of Pittsburgh’s John Keith explores the sustainable potential of computational quantum chemistry August 6th, 2020

Way, shape and form: Synthesis conditions define the nanostructure of manganese dioxide July 31st, 2020

Synthetic Biology

Machine learning reveals recipe for building artificial proteins July 24th, 2020

SUWA: A hyperstable artificial protein that does not denature in high temperatures above 100°C February 28th, 2020

WSU researchers develop new technique to understand biology at the nanoscale November 7th, 2018

Rice U. announces $82 million in strategic research initiatives: Faculty, programs will expand in neuroengineering, synthetic biology, physical biology October 16th, 2018

Discoveries

Materials science researchers develop first electrically injected laser: The diode laser uses semiconducting material germanium tin and could improve micro-processing speed and efficiency at much lower costs August 11th, 2020

May the force be with you: Detecting ultrafast light by its force: From cell phones to solar cells – research has implications for improvements in a wide range of technologies August 7th, 2020

High-sensitivity atomic force microscopy opens up for photosensitive materials August 7th, 2020

Researchers capture X-ray images with unprecedented speed and resolution: Ghost imaging approach could enable detailed movies of the heart with low-dose x-rays August 7th, 2020

Announcements

Materials science researchers develop first electrically injected laser: The diode laser uses semiconducting material germanium tin and could improve micro-processing speed and efficiency at much lower costs August 11th, 2020

SEMI Partners with GLOBALFOUNDRIES to Offer Apprenticeship Program Aimed at Building the Electronics Talent Pipeline August 11th, 2020

High-sensitivity atomic force microscopy opens up for photosensitive materials August 7th, 2020

Researchers capture X-ray images with unprecedented speed and resolution: Ghost imaging approach could enable detailed movies of the heart with low-dose x-rays August 7th, 2020

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters

Materials science researchers develop first electrically injected laser: The diode laser uses semiconducting material germanium tin and could improve micro-processing speed and efficiency at much lower costs August 11th, 2020

May the force be with you: Detecting ultrafast light by its force: From cell phones to solar cells – research has implications for improvements in a wide range of technologies August 7th, 2020

High-sensitivity atomic force microscopy opens up for photosensitive materials August 7th, 2020

Researchers capture X-ray images with unprecedented speed and resolution: Ghost imaging approach could enable detailed movies of the heart with low-dose x-rays August 7th, 2020

Grants/Sponsored Research/Awards/Scholarships/Gifts/Contests/Honors/Records

Highly sensitive dopamine detector uses 2D materials August 7th, 2020

Study: Mapping crystal shapes could fast-track 2D materials: Experts call for global effort to clear hurdles to mass production July 27th, 2020

‘Blinking” crystals may convert CO2 into fuels: Unusual nanoparticles could benefit the quest to build a quantum computer July 17th, 2020

Membrane technology could cut emissions and energy use in oil refining July 17th, 2020

Source: http://www.nanotech-now.com/news.cgi?story_id=56293

Continue Reading
Cannabis32 mins ago

How to make a cannabis-infused lemony hemp shandy

Cannabis32 mins ago

What role could Kamala Harris play in cannabis legalization as vice president?

Blockchain2 hours ago

Warren Buffett Buying Gold May Push Bitcoin to $50K, Investors Say

Blockchain2 hours ago

Unraveling the Blockchain and Crypto Gaming World One Click at a Time

Blockchain5 hours ago

Samsung Phone Support for Gemini Exchange Can Further Crypto Adoption

Blockchain9 hours ago

Blockchain Tracing the Cannabidiol Supply Chains Will Help Define Legal Standards

Cannabis15 hours ago

Temescal Wellness Destroys All Quarantined Vape Cartridges

Cannabis15 hours ago

Drug Plastics & Glass Launches New Tools to Calculate Carbon Footprint

Cannabis15 hours ago

Higher Ground ‘Ballot Box’ Counters Stoner Stereotypes

Cannabis15 hours ago

University of Pittsburgh Partners with Parallel in Marijuana Research Program

Cannabis15 hours ago

SiliCycle Receives Cannabis Processing License from Health Canada

Cannabis16 hours ago

New Study Finds Breathing Techniques Can Improve Your Mental Health

Blockchain16 hours ago

Ethereum Price Hits 2-Year High as ETH Futures Open Interest Tops $1.5B

Cannabis19 hours ago

How To Stop Overthinking Everything

Cannabis21 hours ago

CBD And Blood Flow: What The Brain Wants You To Know

Cannabis22 hours ago

Did Marijuana Prohibition Cause The COVID-19 Pandemic?

AR/VR22 hours ago

Gnomes & Goblins to be Wevr’s Biggest Production, 10x Larger Than the Preview

AI22 hours ago

Is It Worth Investing in a Website Builder?

AR/VR22 hours ago

How to Create a Cloud-connect AR Experience in 15 Minutes or Less

AR/VR23 hours ago

Mortal Blitz: Combat Arena’s PlayStation VR Open Beta Begins Next Week

Cannabis24 hours ago

Cannabis Litigation Q&A Webinar – A Few More Questions and Answers

Crowdfunding1 day ago

AvidXchange Announces New “Tech Rising” Initiative to Remove Barriers to Technology Education

Blockchain1 day ago

Swipe Is the Latest Project to Integrate Chainlink’s Price Oracles

Blockchain1 day ago

Craig Wright Won’t Need to Pay Hodlnaut $60K Until Appeal Is Over, Says Counsel

Blockchain1 day ago

Bitcoin a Hedge Against Elon Musk Mining Asteroid Gold, Say Winklevoss Twins

AR/VR1 day ago

Solaris Offworld Combat has Been Delayed to September

Crowdfunding1 day ago

Mastercard Announces Global Commercial Partnership With Pollinate

AR/VR1 day ago

Oculus Social VR App ‘Venues’ to Get Overhaul in Preparation for ‘Facebook Horizon’

Blockchain1 day ago

Thailand’s Central Bank Eyes DeFi Use Cases for Its Digital Baht

Blockchain1 day ago

Bitcoin Proceeds of COVID-19 Business Support Scheme Fraud Seized

AR/VR1 day ago

VR Giants’ Co-op Kickstarter Achieves Funding Success

Payments1 day ago

Huntington Bancshares picks BillGo for faster payments

Payments1 day ago

Banco Ripley goes live on Temenos Transact

Payments1 day ago

OakNorth’s UK bank has approved £600m in loans since March

Payments1 day ago

How a “Chad” minted Curve tokens early and briefly surpassed BTC’s market cap

Start Ups1 day ago

Diplomatic ties Between Israel and UAE :Donald Trump

Publications1 day ago

As the pandemic persists, New Zealand considers negative interest rates

Publications1 day ago

Stock futures rise slightly after S&P 500 struggles to reach February record high

Payments1 day ago

ABN Amro to slash size of investment bank after losses

Cannabis1 day ago

Weed memes, explained

Trending