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Nanoporous carbon materials containing small domains of sp2-carbon with highly disordered structures are promising for supercapacitor applications. Herein, we synthesize amorphous carbon nanofoam with 98% volumetric void fraction and low…

In the design of optical devices and components, geometric structures and optical properties of materials, such as absorption, refraction, reflection, diffraction, scattering, and trapping, have been utilized. Finding the ideal material…

Boron carbide: A traditional ceramic material shows unique properties when explored in nano-range. Specially designed boron based nanocomposite has been synthesized by reflux method. The addition of SnO2 in base matrix increase the defect…

Pulsed laser-deposited amorphous carbon nanofoams are potential candidate for electrochemical energy storage applications due to ultra-light weight, large volumetric void fractions, and co-existence of sp, sp2 and sp3 carbon hybridization.…

Carbon nanotubes are excellent nano-electromechanical systems, combining high resonance frequency, low mass, and large zero-point motion. At cryogenic temperatures they display high mechanical quality factors. Equally they are outstanding…

Mesoscale and Nanoscale Physics · Physics 2024-03-06 N. Hüttner , S. Blien , P. Steger , A. N. Loh , R. Graaf , A. K. Hüttel

New systems are required for optical limiting against broadband laser pulses. We demonstrate that the association of non-linear scattering from single-wall carbon nanotubes (SWNT) and multiphoton absorption (MPA) from organic chromophores…

Other Condensed Matter · Physics 2016-08-16 Nicolas Izard , Cécilia Ménard , Didier Riehl , Eric Doris , Charles Mioskowski , Eric Anglaret

ultiwalled carbon nanotubes, prepared by both electric arc discharge and chemical vapor deposition methods, show a strong visible light emission in photoluminescence experiments. All the samples employed in the experiments exhibit nearly…

Materials Science · Physics 2007-05-23 H. X. Han , G. H. Li , W. K. Ge , Z. P. Wang , Z. Y. Xu , S. S. Xie , B. H. Chang , L. F. Sun , B. S. Wang , G. Xu , Z. B. Su

Diazonium reactions with carbon nanotubes form optical $sp^3$ defects that can be used in optical and electrical circuits. We investigate a direct on-device reaction supported by confined laser irradiation and present a technique where an…

Mesoscale and Nanoscale Physics · Physics 2022-05-19 Georgy Gordeev , Thomas Rosenkranz , Frank Hennrich , Stephanie Reich , Ralph Krupke

We develop a new chemical route to prepare carbon nanotubes at room temperature. Graphite powder is immersed in a mixed solution of nitric and sulfuric acid with potassium chlorate. After heating the solution up to 70{\deg}C and leaving…

Materials Science · Physics 2011-02-24 D. W. Lee , J. W. Seo

The addition of an optically absorptive layer to otherwise standard dielectric mirrors enables a set of laser direct writing nanostructuring methods that can add functionality to such mirrors while retaining their high reflectivity. These…

Optics · Physics 2023-04-05 Mario Vretenar , Jan Klaers

New carbon forms exhibiting extraordinary physico-chemical properties can be generated from nanostructured precursors under extreme pressure. Nevertheless, synthesis of such fascinating materials is often not well understood that results,…

Electroabsorption spectroscopy of well-identified index-defined semiconducting carbon nanotubes is reported. The measurement of high definition electroabsorption spectra allows direct indexation with unique nanotube chirality. Results show…

Carbon-based black pigments, a widely used class of pigments, are difficult to differentiate with the noninvasive techniques currently used in cultural heritage science. We utilize pump-probe microscopy to distinguish four common…

Materials Science · Physics 2025-01-06 Heidi V. Kastenholz , Michael I. Topper , Warren S. Warren , Martin C. Fischer , David Grass

A single-walled carbon nanotube presents a seamless cylindrical graphene surface and is thus an ideal adsorption substrate for investigating the physics of atoms and molecules in two dimensions and approaching the one-dimensional limit.…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 Boris Dzyubenko , Hao-Chun Lee , Oscar E. Vilches , David H. Cobden

A mechanism of stimulated emission of electromagnetic radiation by an electron beam in carbon nanotubes is theoretically considered. Three basic properties of carbon nanotubes, a strong slowing down of surface electromagnetic waves,…

Mesoscale and Nanoscale Physics · Physics 2008-07-22 K. G. Batrakov , S. A. Maksimenko , P. P. Kuzhir , C. Thomsen

NanoCarb is an innovative Fourier Transform imaging spectrometer dedicated to the measurement of CO2 and CH4. Both its unusual optical principle and sampling strategy allows to reach a compact design, ideal for small satellite constellation…

Instrumentation and Detectors · Physics 2019-07-15 Silvère Gousset , Laurence Croizé , Etienne Le Coarer , Yann Ferrec , Laure Brooker

Optical control of electronic properties is essential for future electric devices. Manipulating such properties has been limited to the microscale in spatial volume due to the wave nature of light; however, scaling down the volume is in…

Optics · Physics 2022-07-27 Takayuki Umakoshi , Hiroshi Arata , Prabhat Verma

Carbon nanotube field-effect transistor (CNTFET) refers to a field-effect transistor that utilizes a single carbon nanotube or an array of carbon nanotubes as the channel material instead of bulk silicon in the traditional MOSFET structure.…

Emerging Technologies · Computer Science 2012-03-12 Naagesh S. Bhat

Carbon nanotubes are quasi-one-dimensional systems that possess superior transport, mechanical, optical, and chemical properties. In this work, we generalize the notion of disorder hyperuniformity, a recently discovered exotic state of…

Statistical Mechanics · Physics 2023-01-04 Duyu Chen , Yu Liu , Yu Zheng , Houlong Zhuang , Mohan Chen , Yang Jiao

Synthetic opals, based on self-assembly of polymeric nanoparticles generally produces fainted/pale structural colors due to too many lattice flaws in the structures. Here we produces carbon nanotubes (CNTs) incorporated high quality 3D…

Applied Physics · Physics 2020-09-22 Ravi Shanker , Izabela Jurewicz , Alan Dalton