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The use of tapered optical fibers, i.e., optical nanofibers, for spectroscopy and the detection of small numbers of particles, such as neutral atoms or molecules, has been gaining ground in recent years. In this review, we briefly introduce…

The interactions between carbon nanotubes (CNTs) and metal adatoms as well as metal contacts are studied by means of ab initio electronic structure calculations. We show that the electronic properties of a semiconducting (8,4) CNT can be…

Mesoscale and Nanoscale Physics · Physics 2017-07-04 F. Fuchs , A. Zienert , C. Wagner , J. Schuster , S. E. Schulz

In recent years, there have been conflicting reports regarding the ultrafast photoconductive response of films of single walled carbon nanotubes (CNTs), which apparently exhibit photoconductivities that can differ even in sign. Here, we…

Mesoscale and Nanoscale Physics · Physics 2018-12-12 Peter Karlsen , Mikhail V. Shuba , Polina P. Kuzhir , Albert G. Nasibulin , Patrizia Lamberti , Euan Hendry

Using first-principles calculations, we investigate the electronic structures and binding properties of nicotine and caffeine adsorbed on single-walled carbon nanotubes to determine whether CNTs are appropriate for filtering or sensing…

Mesoscale and Nanoscale Physics · Physics 2013-07-10 Hyung-June Lee , Gunn Kim , Young-Kyun Kwon

Dynamic wavelength tunability has long been the holy grail of photodetector technology. Because of its atomic thickness and unique properties, graphene opens up new paradigms to realize this concept, but so far this has been elusive…

Mesoscale and Nanoscale Physics · Physics 2017-03-08 François Léonard , Catalin D. Spataru , Michael Goldflam , David W. Peters , Thomas E. Beechem

Biomedical applications of carbon nanotubes have attracted much attention in recent years. Here, we summarize our previously developed protocols for functionalization and bioconjugation of single wall carbon nanotubes (SWNTs) for various…

Materials Science · Physics 2009-10-06 Zhuang Liu , Scott Tabakman , Zhuo Chen , Hongjie Dai

Graphene has recently been shown to be permeable to thermal protons, the nuclei of hydrogen atoms, which sparked interest in its use as a proton-conducting membrane in relevant technologies. However, the influence of light on proton…

We briefly review the status of the application of carbon nanotubes (CNTs) for future interconnects and present results concerning possible integration schemes. Growth of single nanotubes at lithographically defined locations (vias) has…

Materials Science · Physics 2007-05-23 Franz Kreupl , Andrew P. Graham , Maik Liebau , Georg S. Duesberg , Robert Seidel , Eugen Unger

The prospects of using nanofilms of indium-containing III-V semiconductors, gold and single-layer graphene in magnetic field sensors, intended for application in radiation environment were evaluated on the results of testing in neutron…

Photovoltaics has two main processes: Optical absorption and power conversion. In photosynthesis, the two equivalent processes are optical absorption and chemical conversion. Whereas in the latter, the two processes are carried out by…

Mesoscale and Nanoscale Physics · Physics 2022-12-07 Gideon Oyibo , Thomas Barrett , Sharadh Jois , Jeffrey Blackburn , Ji Ung Lee

Transparent and conductive films (TCFs) are of great technological importance. The high transmittance, electrical conductivity and mechanical strength make single-walled carbon nanotubes (SWCNTs) a good candidate for their raw material.…

The unique optoelectronic properties of graphene [1] make it an ideal platform for a variety of photonic applications [2], including fast photodetectors [3], transparent electrodes [4], optical modulators [5], and ultra-fast lasers [6].…

Mesoscale and Nanoscale Physics · Physics 2012-10-02 L. Vicarelli , M. S. Vitiello , D. Coquillat , A. Lombardo , A. C. Ferrari , W. Knap , M. Polini , V. Pellegrini , A. Tredicucci

Optical hyperspectral imaging based on absorption and scattering of photons at the visible and adjacent frequencies denotes one of the most informative and inclusive characterization methods in material research. Unfortunately, restricted…

Stability and photometric accuracy of silicon imaging detectors are essential for the Habitable Worlds Observatory and a range of NASA missions that will explore time domain astrophysics and astronomy over a spectral range spanning soft…

Instrumentation and Detectors · Physics 2023-05-09 Michael E. Hoenk

Graphene and other two-dimensional (2D) materials have emerged as promising materials for broadband and ultrafast photodetection and optical modulation. These optoelectronic capabilities can augment complementary metal-oxide-semiconductor…

Single wall carbon nanotubes (SWCNT) exhibit remarkable optical and electrical properties making them one of the most promising materials for next generation electronic and optoelectronic devices. Their electronic properties strongly depend…

Optoelectronic devices based on graphene and other two-dimensional (2D) materials, such as transition metal dichalcogenides (TMDs) are the focus of wide research interest. The characterization these emerging atomically thin materials and…

Instrumentation and Detectors · Physics 2017-05-09 Adolfo De Sanctis , Gareth F. Jones , Nicola J. Townsend , Monica F. Craciun , Saverio Russo

Vapor sensors based on functionalized carbon nanotubes (NTs) have shown great promise, with high sensitivity conferred by the reduced dimensionality and exceptional electronic properties of the NT. Critical challenges in the development of…

Photon detection efficiency is a key parameter of PMTs in high-precision neutrino and dark matter experiments, while most of these experiments are focus on quantum efficiency. More and more experiments are trying to know the detection…

Instrumentation and Detectors · Physics 2018-10-12 Hai-qiong Zhang , Zhi-min Wang , Feng-jiao Luo , An-bo Yang , Zhong-hua Qin , Chang-gen Yang , Yue-kun Heng

Carbon nanotubes (CNTs) are a promising material for high-performance electronics beyond silicon. But unlike silicon, the nature of the transport band gap in CNTs is not fully understood. The transport gap in CNTs is predicted to be…

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