Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Plasmons triggered in nanotube quantum wells: Rice, Tokyo Metropolitan scientists create platform for unique near-infrared devices

From left, Rice University physicist Junichiro Kono, postdoctoral researcher Weilu Gao and graduate student Fumiya Katsutani, whose work on a collaborative project with Tokyo Metropolitan University led to the discovery of a novel quantum effect in carbon nanotube films invented by the Rice lab. (Credit: Jeff Fitlow/Rice University)
From left, Rice University physicist Junichiro Kono, postdoctoral researcher Weilu Gao and graduate student Fumiya Katsutani, whose work on a collaborative project with Tokyo Metropolitan University led to the discovery of a novel quantum effect in carbon nanotube films invented by the Rice lab. (Credit: Jeff Fitlow/Rice University)

Abstract:
A novel quantum effect observed in a carbon nanotube film could lead to the development of unique lasers and other optoelectronic devices, according to scientists at Rice University and Tokyo Metropolitan University.

Plasmons triggered in nanotube quantum wells: Rice, Tokyo Metropolitan scientists create platform for unique near-infrared devices

Houston, TX | Posted on March 16th, 2018

The Rice-Tokyo team reported an advance in the ability to manipulate light at the quantum scale by using single-walled carbon nanotubes as plasmonic quantum confinement fields.

The phenomenon found in the Rice lab of physicist Junichiro Kono could be key to developing optoelectronic devices like nanoscale, near-infrared lasers that emit continuous beams at wavelengths too short to be produced by current technology.

The new research is detailed in Nature Communications.

The project came together in the wake of the Kono group's discovery of a way to achieve very tight alignment of carbon nanotubes in wafer-sized films. These films allowed for experiments that were far too difficult to carry out on single or tangled aggregates of nanotubes and caught the attention of Tokyo Metropolitan physicist Kazuhiro Yanagi, who studies condensed matter physics in nano materials.

"He brought the gating technique (which controls the density of electrons in the nanotube film), and we provided the alignment technique," Kono said. "For the first time we were able to make a large-area film of aligned nanotubes with a gate that allows us to inject and take out a large density of free electrons."

"The gating technique is very interesting, but the nanotubes were randomly oriented in the films I had used," Yanagi said. "That situation was very frustrating because I could not get precise knowledge of the one-dimensional characteristics of nanotubes in such films, which is most important. The films that can only be provided by the Kono group are amazing because they allowed us to tackle this subject."

Their combined technologies let them pump electrons into nanotubes that are little more than a nanometer wide and then excite them with polarized light. The width of the nanotubes trapped the electrons in quantum wells, in which the energy of atoms and subatomic particles is "confined" to certain states, or subbands.

Light then prompted them to oscillate very quickly between the walls. With enough electrons, Kono said, they began to act as plasmons.

"Plasmons are collective charge oscillations in a confined structure," he said. "If you have a plate, a film, a ribbon, a particle or a sphere and you perturb the system (usually with a light beam), these free carriers move collectively with a characteristic frequency." The effect is determined by the number of electrons and the size and shape of the object.

Because the nanotubes in the Rice experiments were so thin, the energy between the quantized subbands was comparable to the plasmon energy, Kono said. "This is the quantum regime for plasmons, where the intersubband transition is called the intersubband plasmon. People have studied this in artificial semiconductor quantum wells in the very far-infrared wavelength range, but this is the first time it has been observed in a naturally occurring low-dimensional material and at such a short wavelength."

Detecting a very complicated gate voltage dependence in the plasmonic response was a surprise, as was its appearance in both metallic and semiconducting single-walled nanotubes. "By examining the basic theory of light-nanotube interactions, we were able to derive a formula for the resonance energy," Kono said. "To our surprise, the formula was very simple. Only the diameter of the nanotube matters."

The researchers believe the phenomenon could lead to advanced devices for communications, spectroscopy and imaging, as well as highly tunable near-infrared quantum cascade lasers.

While traditional semiconductor lasers depend on the width of the lasing material's bandgap, quantum cascade lasers do not, said Weilu Gao, a co-author on the study and a postdoctoral researcher in Kono’s group that is spearheading device development using aligned nanotubes. "The wavelength is independent of the gap," he said. "Our laser would be in this category. Just by changing the diameter of the nanotube, we should be able to tune the plasma resonance energy without worrying about the bandgap."

Kono also expects the gated and aligned nanotube films will give physicists the opportunity to study Luttinger liquids, theoretical collections of interacting electrons in one-dimensional conductors.

"One-dimensional metals are predicted to be very different from 2-D and 3-D," Kono said. "Carbon nanotubes are some of the best candidates for observing Luttinger liquid behaviors. It's difficult to study a single tube, but we have a macroscopic one-dimensional system. By doping or gating, we can tune the Fermi energy. We can even convert a 1-D semiconductor into a 1-D metal. So this is an ideal system to study this kind of physics."

Yanagi, a professor of condensed matter physics at Tokyo Metropolitan University, is lead author of the paper. Co-authors are graduate student Ryotaro Okada, graduate student Yota Ichinose and Yohei Yomogida, an assistant professor of condensed matter physics, all at Tokyo Metropolitan, and graduate student Fumiya Katsutani at Rice. Kono is a professor of electrical and computer engineering, of physics and astronomy, and of materials science and nanoengineering.

The research was supported by Japan Society for the Promotion of Science Grant-in-Aid for Scientific Research (KAKENHI) grants, a Japan Science and Technology Core Research of Evolutional Science and Technology grant, the Yamada Science Foundation and the Basic Energy Sciences program of the U.S. Department of Energy, the National Science Foundation and the Robert A. Welch Foundation.

-30-

####

About Rice University
Located on a 300-acre forested campus in Houston, Rice University is consistently ranked among the nation’s top 20 universities by U.S. News & World Report. Rice has highly respected schools of Architecture, Business, Continuing Studies, Engineering, Humanities, Music, Natural Sciences and Social Sciences and is home to the Baker Institute for Public Policy. With 3,970 undergraduates and 2,934 graduate students, Rice’s undergraduate student-to-faculty ratio is just under 6-to-1. Its residential college system builds close-knit communities and lifelong friendships, just one reason why Rice is ranked No. 1 for quality of life and for lots of race/class interaction and No. 2 for happiest students by the Princeton Review. Rice is also rated as a best value among private universities by Kiplinger’s Personal Finance. To read “What they’re saying about Rice,” go to http://tinyurl.com/RiceUniversityoverview .

Follow Rice News and Media Relations via Twitter @RiceUNews

For more information, please click here

Contacts:
David Ruth
713-348-6327


Mike Williams
713-348-6728

Copyright © Rice University

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 abstract at:

Nanotubes line up to form films:

Junichiro Kono Laboratory:

Rice Department of Physics and Astronomy:

Rice Department of Electrical and Computer Engineering:

Related News Press

News and information

Birth of a hybrid: High-temperature synthesis under pressure helps to combine properties of metals and ceramics December 15th, 2018

The role of lipid nanoparticles and its surface modification in reaching the brain: This article by Dr. Manoli Igartua et al. is published in Current Drug Delivery, Volume 15, Issue 9, 2018 December 14th, 2018

Researchers use jiggly Jell-O to make powerful new hydrogen fuel catalyst: The inexpensive new material can split water just as efficiently as costly platinum December 14th, 2018

IMDEA Nanociencia and Universidad Autónoma de Madrid researchers have demonstrated that graphene deposited on a metal surface promotes an unusual chemical reaction that would hardly take place under noncatalyzed conditions. December 14th, 2018

Quantum Physics

Oxford Instruments participates in the launch of the European Quantum Technology Flagship Programme ‘QMiCS’ December 13th, 2018

A new 'spin' on kagome lattices: Team's findings shed new light on the presence of spin-orbit coupling and topological spin textures in kagome lattices December 9th, 2018

Milestone for bERLinPro: Photocathodes with high quantum efficiency December 8th, 2018

An important step towards completely secure quantum communication networks November 30th, 2018

2 Dimensional Materials

IEDM - CEA-Leti Will Present 11 Papers and Host Workshop on Disruptive Technologies for Data Management November 7th, 2018

Physicists name and codify new field in nanotechnology: ‘electron quantum metamaterials:’ UC Riverside’s Nathaniel Gabor and colleague formulate a vision for the field in a perspective article November 5th, 2018

2-D magnetism: Atom-thick platforms for energy, information and computing research: Scientists say the tiny 'spins' of electrons show potential to one day support next-generation innovations in many fields October 31st, 2018

Rice U. scientists form flat tellurium: Two-dimensional element shows promise for solar cells and other optoelectronics October 26th, 2018

Thin films

Eco-friendly waterproof polymer films synthesized using novel method October 31st, 2018

Rice U. scientists form flat tellurium: Two-dimensional element shows promise for solar cells and other optoelectronics October 26th, 2018

Extracting energy from a 60 nanometers thin layer October 5th, 2018

Laser sintering optimized for printed electronics: New study sheds (laser) light on the best means of laying down thin-film circuitry September 13th, 2018

Plasmonics

Russian scientists from ITMO University launches free online course on plasmonics October 5th, 2018

Light makes Rice U. catalyst more effective: Halas lab details plasmonic effect that allows catalyst to work at lower energy October 5th, 2018

Govt.-Legislation/Regulation/Funding/Policy

Researchers use jiggly Jell-O to make powerful new hydrogen fuel catalyst: The inexpensive new material can split water just as efficiently as costly platinum December 14th, 2018

IMDEA Nanociencia and Universidad Autónoma de Madrid researchers have demonstrated that graphene deposited on a metal surface promotes an unusual chemical reaction that would hardly take place under noncatalyzed conditions. December 14th, 2018

Collagen nanofibrils in mammalian tissues get stronger with exercise December 14th, 2018

Oxford Instruments participates in the launch of the European Quantum Technology Flagship Programme ‘QMiCS’ December 13th, 2018

Possible Futures

Birth of a hybrid: High-temperature synthesis under pressure helps to combine properties of metals and ceramics December 15th, 2018

Vitamin E TPGS emulsified vinorelbine bitartrate loaded solid lipid nanoparticles (SLN): This article by Dr. Sanjay Singh et al. is published in Current Drug Delivery, Volume 15 , Issue 8 , 2018 December 14th, 2018

Researchers use jiggly Jell-O to make powerful new hydrogen fuel catalyst: The inexpensive new material can split water just as efficiently as costly platinum December 14th, 2018

IMDEA Nanociencia and Universidad Autónoma de Madrid researchers have demonstrated that graphene deposited on a metal surface promotes an unusual chemical reaction that would hardly take place under noncatalyzed conditions. December 14th, 2018

Chip Technology

Oxford Instruments participates in the launch of the European Quantum Technology Flagship Programme ‘QMiCS’ December 13th, 2018

A new 'spin' on kagome lattices: Team's findings shed new light on the presence of spin-orbit coupling and topological spin textures in kagome lattices December 9th, 2018

Harnessing the power of 'spin orbit' coupling in silicon: Scaling up quantum computation December 7th, 2018

CEA-Leti’s RRAM-based TCAM Circuits Meet Requirements of Multicore Neuromorphic Processors December 5th, 2018

Nanotubes/Buckyballs/Fullerenes/Nanorods

'Smart skin' simplifies spotting strain in structures: Rice U. invention can use fluorescing carbon nanotubes to reveal stress in aircraft, structures November 15th, 2018

Ultrasensitive toxic gas detector October 31st, 2018

Nanotubes may give the world better batteries: Rice U. scientists' method quenches lithium metal dendrites in batteries that charge faster, last longer October 25th, 2018

TUBALL single wall carbon nanotubes: No ecotoxicity found, unlike other carbon nanotubes October 12th, 2018

Optical computing/Photonic computing

An important step towards completely secure quantum communication networks November 30th, 2018

Bending light around tight corners without backscattering losses: New photonic crystal waveguide based on topological insulators paves the way to build futuristic light-based computers November 19th, 2018

GaN Rising: UC Santa Barbara electrical and computer engineering professor Umesh Mishra to deliver 63rd Annual Faculty Research Lecture November 16th, 2018

AIM Photonics Members Meeting Provides Key Updates on the Initiative’s Progress: Day-Long Engagement in Syracuse, NY, Sees Strong Attendance and Interest from Industry, Government, and Academic Partners November 2nd, 2018

Nanoelectronics

2-D magnetism: Atom-thick platforms for energy, information and computing research: Scientists say the tiny 'spins' of electrons show potential to one day support next-generation innovations in many fields October 31st, 2018

Machine learning helps improving photonic applications September 28th, 2018

How a tetrahedral substance can be more symmetrical than a spherical atom: A new type of symmetry September 14th, 2018

Laser sintering optimized for printed electronics: New study sheds (laser) light on the best means of laying down thin-film circuitry September 13th, 2018

Discoveries

Birth of a hybrid: High-temperature synthesis under pressure helps to combine properties of metals and ceramics December 15th, 2018

A summary of electrospun nanofibers as drug delivery system: This article by Dr. José Manuel Cornejo Bravo et al. is published in Current Drug Delivery, Volume 15 , Issue 10 , 2018 December 14th, 2018

Vitamin E TPGS emulsified vinorelbine bitartrate loaded solid lipid nanoparticles (SLN): This article by Dr. Sanjay Singh et al. is published in Current Drug Delivery, Volume 15 , Issue 8 , 2018 December 14th, 2018

Researchers use jiggly Jell-O to make powerful new hydrogen fuel catalyst: The inexpensive new material can split water just as efficiently as costly platinum December 14th, 2018

Materials/Metamaterials

Birth of a hybrid: High-temperature synthesis under pressure helps to combine properties of metals and ceramics December 15th, 2018

Researchers use jiggly Jell-O to make powerful new hydrogen fuel catalyst: The inexpensive new material can split water just as efficiently as costly platinum December 14th, 2018

IMDEA Nanociencia and Universidad Autónoma de Madrid researchers have demonstrated that graphene deposited on a metal surface promotes an unusual chemical reaction that would hardly take place under noncatalyzed conditions. December 14th, 2018

Iran Develops Water-Repellent Nano-Paint December 5th, 2018

Announcements

Birth of a hybrid: High-temperature synthesis under pressure helps to combine properties of metals and ceramics December 15th, 2018

The role of lipid nanoparticles and its surface modification in reaching the brain: This article by Dr. Manoli Igartua et al. is published in Current Drug Delivery, Volume 15, Issue 9, 2018 December 14th, 2018

A summary of electrospun nanofibers as drug delivery system: This article by Dr. José Manuel Cornejo Bravo et al. is published in Current Drug Delivery, Volume 15 , Issue 10 , 2018 December 14th, 2018

Vitamin E TPGS emulsified vinorelbine bitartrate loaded solid lipid nanoparticles (SLN): This article by Dr. Sanjay Singh et al. is published in Current Drug Delivery, Volume 15 , Issue 8 , 2018 December 14th, 2018

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

Birth of a hybrid: High-temperature synthesis under pressure helps to combine properties of metals and ceramics December 15th, 2018

The role of lipid nanoparticles and its surface modification in reaching the brain: This article by Dr. Manoli Igartua et al. is published in Current Drug Delivery, Volume 15, Issue 9, 2018 December 14th, 2018

Researchers use jiggly Jell-O to make powerful new hydrogen fuel catalyst: The inexpensive new material can split water just as efficiently as costly platinum December 14th, 2018

IMDEA Nanociencia and Universidad Autónoma de Madrid researchers have demonstrated that graphene deposited on a metal surface promotes an unusual chemical reaction that would hardly take place under noncatalyzed conditions. December 14th, 2018

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

New research could fine-tune the gene scissors CRISPR December 1st, 2018

Research Pioneers: Five UCSB professors are named Fellows of the American Association for the Advancement of Science November 27th, 2018

GaN Rising: UC Santa Barbara electrical and computer engineering professor Umesh Mishra to deliver 63rd Annual Faculty Research Lecture November 16th, 2018

'Smart skin' simplifies spotting strain in structures: Rice U. invention can use fluorescing carbon nanotubes to reveal stress in aircraft, structures November 15th, 2018

Photonics/Optics/Lasers

Nanoscribe Presents Successor Model Photonic Professional GT2 for High-Resolution 3D Microfabrication: The first ever production of structures in millimeter size with micrometer precision December 4th, 2018

CEA-Leti Extends 300mm Line and Adds Avenues for Developing Disruptive Technologies: Execution Relies on CEA-Leti’s Fully Implemented Technology With Module-Level Innovations & Devices and Their Architectures December 3rd, 2018

Bending light around tight corners without backscattering losses: New photonic crystal waveguide based on topological insulators paves the way to build futuristic light-based computers November 19th, 2018

GaN Rising: UC Santa Barbara electrical and computer engineering professor Umesh Mishra to deliver 63rd Annual Faculty Research Lecture November 16th, 2018

Research partnerships

Researchers use jiggly Jell-O to make powerful new hydrogen fuel catalyst: The inexpensive new material can split water just as efficiently as costly platinum December 14th, 2018

IMDEA Nanociencia and Universidad Autónoma de Madrid researchers have demonstrated that graphene deposited on a metal surface promotes an unusual chemical reaction that would hardly take place under noncatalyzed conditions. December 14th, 2018

Oxford Instruments participates in the launch of the European Quantum Technology Flagship Programme ‘QMiCS’ December 13th, 2018

Three CEA Projects Awarded European Research Council Synergy Grants November 26th, 2018

Quantum nanoscience

Oxford Instruments participates in the launch of the European Quantum Technology Flagship Programme ‘QMiCS’ December 13th, 2018

Physicists name and codify new field in nanotechnology: ‘electron quantum metamaterials:’ UC Riverside’s Nathaniel Gabor and colleague formulate a vision for the field in a perspective article November 5th, 2018

2-D magnetism: Atom-thick platforms for energy, information and computing research: Scientists say the tiny 'spins' of electrons show potential to one day support next-generation innovations in many fields October 31st, 2018

A New Way to Measure Nearly Nothing: NIST prototype design uses ultracold trapped atoms to measure pressure October 22nd, 2018

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