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Our study of the adsorption of oxygen molecules on individual semiconductiong single-walled carbon nanotubes at ambient conditions reveals that the adsorption is physisorption, that the resistance without O2 increases by ~two orders of…

Materials Science · Physics 2009-11-11 A. Tchernatinsky , B. Nagabhirava , S. Desai , G. Sumanasekera , B. Alphenaar , C. S. Jayanthi , S. Y. Wu

The optical absorption spectrums of nanomotors made from double-wall carbon nanotubes have been calculated with the time-dependent density functional based tight binding method. When the outer short tube of the nanomotor moves along or…

Mesoscale and Nanoscale Physics · Physics 2017-01-04 Baomin Wang , Xuewei Cao , Zhan Wang , Yong Wang , Kaihui Liu

We theoretically study the interplay between electrical and mechanical properties of suspended, doubly clamped carbon nanotubes in which charging effects dominate. In this geometry, the capacitance between the nanotube and the gate(s)…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 S. Sapmaz , Ya. M. Blanter , L. Gurevich , H. S. J. van der Zant

For single particle electron cryo-microscopy (cryoEM), contrast loss due to beam-induced charging and specimen movement is a serious problem, as the thin films of vitreous ice spanning the holes of a holey carbon film are particularly…

Biological Physics · Physics 2011-10-07 Daniel Rhinow , Nils-Eike Weber , Andrey Turchanin , Armin Gölzhäuser , Werner Kühlbrandt

Optical interfaces for quantum emitters are a prerequisite for implementing quantum networks. Here, we couple single molecules to the guided modes of an optical nanofiber. The molecules are embedded within a crystal that provides…

An overview is presented of the various phases predicted to occur when gases are absorbed within a bundle of carbon nanotubes. The behavior may be characterized by an effective dimensionality, which depends on the species and the…

Soft Condensed Matter · Physics 2007-05-23 M. Mercedes Calbi , Milton W. Cole , Silvina M. Gatica , Mary J. Bojan , George Stan

Poor screening of the long-range Coulomb interaction in one-dimensional carbon nanotubes results in a peculiar picture of contact phenomena. Being brought to a contact with a metal, conducting nanotube accumulates electric charge whose…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Arkadi A. Odintsov , Yasuhiro Tokura

We use DFT to study the effect of molecular adsorbates on the conductance of metallic carbon nanotubes. The five molecules considered (NO2, NH2, H, COOH, OH) lead to similar scattering of the electrons. The adsorption of a single molecule…

Mesoscale and Nanoscale Physics · Physics 2008-10-02 Juan Maria Garcia-Lastra , Kristian S. Thygesen , Mikkel Strange , Angel Rubio

One- and two-photon luminescence excitation spectroscopy showed a series of distinct excitonic states in single-walled carbon nanotubes. The energy splitting between one- and two-photon-active exciton states of different wavefunction…

Materials Science · Physics 2007-05-23 J. Maultzsch , R. Pomraenke , S. Reich , E. Chang , D. Prezzi , A. Ruini , E. Molinari , M. S. Strano , C. Thomsen , C. Lienau

We investigate electric-field induced redshifts of photoluminescence from individual single-walled carbon nanotubes. The shifts scale quadratically with field, while measurements with different excitation powers and energies show that…

Mesoscale and Nanoscale Physics · Physics 2014-10-23 M. Yoshida , Y. Kumamoto , A. Ishii , A. Yokoyama , Y. K. Kato

The article reviews recent progress in the theoretical understanding of near-field surface electromagnetic phenomena in pristine and atomically doped carbon nanotubes. The phenomena involving strong coupling effects are outlined. They are…

Mesoscale and Nanoscale Physics · Physics 2010-11-01 I. V. Bondarev

We have fabricated UV-sensitive photodetectors based on colloidal CdS nanocrystals and graphene. The nanocrystals act as a sensitizer layer that improves light harvesting leading to high responsivity of the detector. Despite the slow…

Mesoscale and Nanoscale Physics · Physics 2019-04-19 Davide Spirito , Stefan Kudera , Vaidotas Miseikis , Carlo Giansante , Camilla Coletti , Roman Krahne

In recent years, many new materials have been developed and prepared to improve the performance of light-harvesting technologies and to develop new and attractive applications. The problem of stability of long-term operation of various…

Applied Physics · Physics 2023-09-28 O. Y. Semchuk , T. Gatti , S. Osella

The stabilization of carbon nanotubes via the filling with inner tubes is demonstrated by probing the optical transitions in double-walled carbon nanotube bundles under hydrostatic pressure with optical spectroscopy. Double-walled carbon…

Mesoscale and Nanoscale Physics · Physics 2018-02-02 B. Anis , K. Haubner , F. Börrnert , L. Dunsch , M. H. Rümmeli , C. A. Kuntscher

This paper is the first one of a series of two articles in which we revisit the optical properties of single-walled carbon nanotubes (SWNT). Produced by rolling up a graphene sheet, SWNT owe their intriguing properties to their cylindrical…

Mathematical Physics · Physics 2018-11-30 Morten Rasmussen , Benjamin Ricaud , Baptiste Savoie

The use of optics in microelectronic circuits to overcome the limitation of metallic interconnects is more and more considered as a viable solution. Among future silicon compatible materials, carbon nanotubes are promising candidates thanks…

Photoconductivity of single-crystalline selenium nanotubes (SCSNT) under a range of illumination intensities of a 633nm laser is carried out with a novel two terminal device arrangement at room temperature. It's found that SCSNT forms…

Materials Science · Physics 2008-06-18 Peng Liu , Yurong Ma , Weiwei Cai , Zhenzhong Wang , Limin Qi , Dongmin Chen

NADH is a key biomolecule involved in many biocatalytic processes as cofactor and its quantification can be correlated to specific enzymatic activity. Many efforts have been taken to obtain clean electrochemical signals related to NADH…

Microwave impedance measurements indicate a non-linear absorption anomaly in single wall carbon nanotubes at low temperatures (below $20$ K). We investigate the nature of the anomaly using a time resolved microwave impedance measurement…

Mesoscale and Nanoscale Physics · Physics 2019-12-19 B. G. Márkus , B. Gyüre-Garami , O. Sági , G. Csősz , F. Márkus , F. Simon

The ability to integrate carbon nanotubes, especially single-walled carbon nanotubes, seamlessly onto silicon would expand the range of applications considerably. Though direct integration using chemical vapor deposition is the simplest…

Materials Science · Physics 2007-10-10 J. M. Simmons , B. M. Nichols , Matthew S. Marcus , O. M. Castellini , R. J. Hamers , M. A. Eriksson