Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International

Wikipedia Affiliate Button

Home > Press > Measuring a tiny quasiparticle is a major step forward for semiconductor technology: Research team publishes latest findings on promising quasiparticles and their interactions

Abstract:
- A team of researchers led by Sufei Shi, an assistant professor of chemical and biological engineering at Rensselaer Polytechnic Institute, has uncovered new information about the mass of individual components that make up a promising quasiparticle, known as an exciton, that could play a critical role in future applications for quantum computing, improved memory storage, and more efficient energy conversion.

Measuring a tiny quasiparticle is a major step forward for semiconductor technology: Research team publishes latest findings on promising quasiparticles and their interactions

Troy, NY | Posted on June 19th, 2020

Published today in Nature Communications, the team's work brings researchers one step closer to advancing the development of semiconductor devices by deepening their understanding of an atomically thin class of materials known as transitional metal dichalcogenides (TMDCs), which have been eyed for their electronic and optical properties. Researchers still have a lot to learn about the exciton before TMDCs can successfully be used in technological devices.

Shi and his team have become leaders in that pursuit, developing and studying TMDCs, and the exciton in particular. Excitons are typically generated by energy from light and form when a negatively charged electron bonds with a positively charged hole particle.

The Rensselaer team found that within this atomically thin semiconductor material, the interaction between electrons and holes can be so strong that the two particles within an exciton can bond with a third electron or hole particle to form a trion.

In this new study, Shi's team was able to manipulate the TMDCs material so the crystalline lattice within would vibrate, creating another type of quasiparticle known as a phonon, which will strongly interact with a trion. The researchers then placed the material within a high magnetic field, analyzed the light emitted from the TMDCs from the phonon interaction, and were able to determine the effective mass of the electron and hole individually.

Researchers previously assumed there would be symmetry in mass, but, Shi said, the Rensselaer team found these measurements were significantly different.

"We have developed a lot of knowledge about TMDCs now," Shi said. "But in order to design an electronic or optoelectronic device, it is essential to know the effective mass of the electrons and holes. This work is one solid step toward that goal."

###

This research was also led by Zhipeng Li, a postdoctoral researcher at Rensselaer, and Tianmeng Wang and Shengnan Miao, both doctoral students in chemical engineering at Rensselaer. The work was done in collaboration with a theoretical team led by Chuanwei Zhang, a professor of physics at the University of Texas at Dallas, scientists from Maglab in Tallahassee, and crystal growers from Arizona State University and Japan. This work is primarily supported by an Air Force Office of Scientific Research grant and a National Science Foundation CAREER award.

####

About Rensselaer Polytechnic Institute
Founded in 1824, Rensselaer Polytechnic Institute is America's first technological research university. Rensselaer encompasses five schools, 32 research centers, more than 145 academic programs, and a dynamic community made up of more than 7,900 students and over 100,000 living alumni. Rensselaer faculty and alumni include more than 145 National Academy members, six members of the National Inventors Hall of Fame, six National Medal of Technology winners, five National Medal of Science winners, and a Nobel Prize winner in Physics. With nearly 200 years of experience advancing scientific and technological knowledge, Rensselaer remains focused on addressing global challenges with a spirit of ingenuity and collaboration. To learn more, please visit http://www.rpi.edu .

For more information, please click here

Contacts:
Reeve Hamilton

518-833-4277

@rpinews

Copyright © Rensselaer Polytechnic Institute

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

The lightest shielding material in the world: Protection against electromagnetic interference July 3rd, 2020

Spintronics: Faster data processing through ultrashort electric pulses July 3rd, 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

Towards lasers powerful enough to investigate a new kind of physics: An international team of researchers has demonstrated an innovative technique for increasing the intensity of lasers July 3rd, 2020

Videos/Movies

Oxford Instruments Asylum Research Jupiter XR Large-Sample AFM Now Includes New Ergo Software Interface for Even Greater Productivity June 18th, 2020

Tiny pump builds polyrotaxanes with precision: Artificial molecular pump gives precise control for materials design June 12th, 2020

Researchers mimic nature for fast, colorful 3D printing June 10th, 2020

Exotic nanotubes move in less-mysterious ways: Rice scientists, engineers show boron nitride’s promise for composites, biomedical applications June 2nd, 2020

Govt.-Legislation/Regulation/Funding/Policy

Towards lasers powerful enough to investigate a new kind of physics: An international team of researchers has demonstrated an innovative technique for increasing the intensity of lasers July 3rd, 2020

Carbon-loving materials designed to reduce industrial emissions July 3rd, 2020

Charcoal a weapon to fight superoxide-induced disease, injury: Nanomaterials soak up radicals, could aid treatment of COVID-19 July 2nd, 2020

The nature of nuclear forces imprinted in photons June 30th, 2020

Possible Futures

Spintronics: Faster data processing through ultrashort electric pulses July 3rd, 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

Towards lasers powerful enough to investigate a new kind of physics: An international team of researchers has demonstrated an innovative technique for increasing the intensity of lasers July 3rd, 2020

Crystal structure discovered almost 200 years ago could hold key to solar cell revolution July 3rd, 2020

Memory Technology

Process for 'two-faced' nanomaterials may aid energy, information tech June 26th, 2020

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

Engineers put tens of thousands of artificial brain synapses on a single chip: The design could advance the development of small, portable AI devices June 8th, 2020

Self-assembling, biomimetic composites possess unusual electrical properties June 4th, 2020

Quantum Computing

Extensive review of spin-gapless semiconductors: Next-generation spintronics candidates: spin-gapless semiconductors (SGSs) bridge the zero-gap materials and half-metals June 26th, 2020

Is teleportation possible? Yes, in the quantum world: Quantum teleportation is an important step in improving quantum computing June 19th, 2020

Excitons form superfluid in certain 2D combos: Rice University researchers find ‘paradox’ in ground-state bilayers June 15th, 2020

A stitch in time: How a quantum physicist invented new code from old tricks: Error suppression opens pathway to universal quantum computing May 22nd, 2020

Discoveries

The lightest shielding material in the world: Protection against electromagnetic interference July 3rd, 2020

Spintronics: Faster data processing through ultrashort electric pulses July 3rd, 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

Towards lasers powerful enough to investigate a new kind of physics: An international team of researchers has demonstrated an innovative technique for increasing the intensity of lasers July 3rd, 2020

Announcements

Towards lasers powerful enough to investigate a new kind of physics: An international team of researchers has demonstrated an innovative technique for increasing the intensity of lasers July 3rd, 2020

Crystal structure discovered almost 200 years ago could hold key to solar cell revolution July 3rd, 2020

Flexible material shows potential for use in fabrics to heat, cool July 3rd, 2020

Carbon-loving materials designed to reduce industrial emissions July 3rd, 2020

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

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

Towards lasers powerful enough to investigate a new kind of physics: An international team of researchers has demonstrated an innovative technique for increasing the intensity of lasers July 3rd, 2020

Crystal structure discovered almost 200 years ago could hold key to solar cell revolution July 3rd, 2020

Flexible material shows potential for use in fabrics to heat, cool July 3rd, 2020

Military

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

Fluorocarbon bonds are no match for light-powered nanocatalyst: Rice U. lab unveils catalyst that can break problematic C-F bonds June 22nd, 2020

Teaching physics to neural networks removes 'chaos blindness' June 19th, 2020

Is teleportation possible? Yes, in the quantum world: Quantum teleportation is an important step in improving quantum computing June 19th, 2020

Energy

Process for 'two-faced' nanomaterials may aid energy, information tech June 26th, 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

First measurement of electron energy distributions, could enable sustainable energy technologies June 5th, 2020

Oil & gas and automotive sectors will benefit from durable polymers with graphene nanotubes May 14th, 2020

Battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics/Energy storage

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

Extremely low thermal conductivity in 1D soft chain structure BiSeX (X = Br, I) June 19th, 2020

Spontaneous formation of nanoscale hollow structures could boost battery storage June 12th, 2020

Tiny pump builds polyrotaxanes with precision: Artificial molecular pump gives precise control for materials design June 12th, 2020

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project