Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International

Wikipedia Affiliate Button

Home > Press > Color superlensing to assist in surpassing diffraction barrier: A paper by Kazan Federal University's Sergey Kharintsev appeared in Optics Letters

Schematic of the working principle of a disordered TiN?TiO2 metalens.

CREDIT
Kazan Federal University
Schematic of the working principle of a disordered TiN?TiO2 metalens. CREDIT Kazan Federal University

Abstract:
The research was supported by a Russian Science Foundation's grant under the title "Synthesis and research of a new class of nanocomposite ceramics with degenerate dielectric permeability for opto-plasmonic applications."

Color superlensing to assist in surpassing diffraction barrier: A paper by Kazan Federal University's Sergey Kharintsev appeared in Optics Letters

Kazan, Russian Federation | Posted on January 3rd, 2020

A metalens described in the article is a thin composite metal-dielectric film placed on a dielectric substrate; the width is several dozen nanometers.

"The light has a wave nature, so there is a diffraction limit which confines the resolution of traditional optical microscopy," explains Kharintsev. "Our metalens is an optical device capable of surpassing that diffraction limit. Such a solution paves way for using optical technologies in nanoscale integral circuits and sensors."

The ultra-high resolution is based on an unusual behavior of the metalens in optical and infrared ranges.

"The material part of the dielectric constant oscillates near zero. This property can be used to enhance stimulated Raman scattering of light in a spatially limited medium illuminated by low-intensity continuous laser light. For most materials found in nature, nonlinear effects are weak, and to observe them it is necessary to increase the length of the medium (for example, using optical fibers) and / or to increase the laser pump power (using high-power pulsed lasers).

"We used a 50 nm thick titanium oxy nitride (TiON) film as a disordered nonlinear medium. The film was synthesized by magnetron sputtering and subsequent oxidation in air. As a result of a two-stage procedure, metal (TiN) and dielectric (TiO2) nanoparticles were formed in the film. An increase in the amplitude of the Stokes wave in a TiN / TiO2 film occurs due to the enhancement of the cubic susceptibility because of localized plasmon resonance and a small refractive index of the effective medium. Such metal-insulator nanocomposite films having several epsilon-near-zero frequencies in the visible and infrared ramges have found application in creating broadband metal technologies providing resolution beyond the limits of light diffraction," adds the author.

Kazan University employees have succeeded in visualizing 40 nm multiwall carbon nanotubes scattered along the surface of the metalens created by them, and the resolution was below 100 nm.

"Nanocomposite epsilon-near-zero film works as a surface-enhanced Raman scattering substrate, and it helps not only enhance the scattered signal, but also achieve beyond-diffraction resolutions. Metalenses and ENZ films can be used to create broadband absorbers for solar panels," concludes Dr. Kharintsev.

####

For more information, please click here

Contacts:
Yury Nurmeev


@KazanUni

Copyright © Kazan Federal 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

RELATED JOURNAL ARTICLE:

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

Imaging

Developing new techniques to improve atomic force microscopy June 26th, 2020

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

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

Oxford Instruments Asylum Research Announces New “Relate” Software for Correlative Imaging with Atomic Force Microscopy and Electron Microscopy June 12th, 2020

Thin films

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

Nanotubes/Buckyballs/Fullerenes/Nanorods

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

Prodigiosin-based solution has selective activity against cancer cells: A new nanoformulation was described by Kazan University's Bionanotechnology Lab in Frontiers in Bioengineering and Biotechnology June 12th, 2020

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

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

Tools

Developing new techniques to improve atomic force microscopy June 26th, 2020

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

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

Oxford Instruments Asylum Research Announces New “Relate” Software for Correlative Imaging with Atomic Force Microscopy and Electron Microscopy June 12th, 2020

Energy

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

Measuring a tiny quasiparticle is a major step forward for semiconductor technology: Research team publishes latest findings on promising quasiparticles and their interactions June 19th, 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

Solar/Photovoltaic

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

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

Twisting 2D materials uncovers their superpowers: Researchers have developed a completely new method for twisting atomically thin materials, paving the way for applications of 'twistronics' based on tunable 2D materials May 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