Results 81 to 90 of about 402,012 (303)

From simple molecules to nanotubes. Reliable predictions of ionization potentials from the ΔMP2-SCS methods

New Journal of Physics, 2020
The vertical ionization potentials for systems of various sizes, ranging from simple molecules, DNA/RNA bases, donor and acceptor organic molecular systems as well as nanotubes are calculated using the ΔMP2-SCS family of methods [Śmiga et al 2018 J. Chem.
Szymon Śmiga, Sylwia Siecińska, Ireneusz Grabowski   +2 more
doaj   +1 more source

Large diameter multiwall nanotubes of MgB2: structural aspects and stability of superconducting nanotubular magnesium boride

, 2015
Based on a theoretical study, we demonstrated that magnesium boride nanotubes can reach the same stability as bulk MgB2 structure. However, most stable nanotubular forms are not structurally derived from mixed triangular-hexagonal structural motifs of a ...
Banacky, P., Noga, J., Noga, P., Szocs, V.   +3 more
core   +1 more source

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

Advanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari, Gokul Bhaskaran, Krishan Kumar, Yun Suk Huh, Young‐Kyu Han   +4 more
wiley   +1 more source

TiO2 Nanotubes: Recent Advances in Synthesis and Gas Sensing Properties

Sensors, 2013
Synthesis—particularly by electrochemical anodization-, growth mechanism and chemical sensing properties of pure, doped and mixed titania tubular arrays are reviewed.
Giorgio Sberveglieri, Guido Faglia, Elisabetta Comini, Vardan Galstyan   +3 more
doaj   +1 more source

MWCNT induced negative real permittivity in a copolyester of Bisphenol-A with terephthalic and isophthalic acids

Materials Research Express, 2020
In the present study, the negative real permittivity behavior of a copolyester of bisphenol-A with terephthalic acid and isophthalic acid (PAr) containing 1.5 to 7.5 wt% multi-walled carbon nanotubes (MWCNTs) have been investigated in detail.
Zeynep Güven Özdemir, Dolunay Şakar Daşdan, Pelin Kavak, Jürgen Pionteck, Petra Pötschke, Brigitte Voit, Banu Süngü Mısırlıoğlu   +6 more
doaj   +1 more source

Mapping of functionalized regions on carbon nanotubes by scanning tunneling microscopy

, 2010
Scanning tunneling microscopy (STM) gives us the opportunity to map the surface of functionalized carbon nanotubes in an energy resolved manner and with atomic precision. But this potential is largely untapped, mainly due to sample stability issues which
Balasubramanian K., Biró L. P., Bonifazi D., Burghard M., Cha S. I., Chiu P. W., Curran S., Deshpande A., Eitan A., Forsman W. C., Fujii S., Graupner R., Hernadi K., Horváth Z. E., Hu H., Hu H., Hügle S., I. Kiricsi, K. Kamarás, Kamaras K., Kamarás K., Kelly K. F., Kiricsi I., Klinke C., Kosynkin D. V., Kónya Z., L. P. Biró, Lauffer P., Lemay S. G., López-Bezanilla A., Maturová K., Monthioux M., Nemes-Incze P., Osváth Z., Osváth Z., P. Nemes-Incze, Paiva M. C., Park H., Pugno N. M., Sainsbury T., Shiraishi M., Strano M. S., Tapasztó L., Tasis D., Wildöer J. W., Willems I., Yun Y., Z. E. Horváth, Z. Kónya, Zhang J., Zhang L., Zhang Y., Zhou W., Á. Pekker   +53 more
core   +1 more source

Shaping Ti3C2 MXene Nanospheres for Precision Near‐Infrared Photothermal Therapy

Advanced Functional Materials, EarlyView.
In this study, we report producing spherical MXenes via fs laser fragmentation of Ti3C2 flakes in liquid medium. The nanoparticles demonstrated pronounced light absorption and high photothermal conversion efficiencies of 68% and 63% under heating with NIR‐I and NIR‐II lasers, respectively.
Julia S. Babkova, Ivan V. Zelepukin, Konstantin G. Shevchenko, Gleb V. Tikhonowski, Lyubov V. Gorelik, Anton A. Popov, Anna S. Sogomonyan, Alina Yu. Kapitannikova, Ivan S. Kazantsev, Dmitry V. Dyubo, Daria A. Panova, Daniil I. Tselikov, Anton A. Minnekhanov, Aziz B. Mirkasymov, Georgy A. Ermolaev, Alexander V. Syuy, Gleb I. Tselikov, Aleksey V. Arsenin, Andrei V. Kabashin, Kostya S. Novoselov, Sergey M. Deyev, Valentyn S. Volkov   +21 more
wiley   +1 more source

Domain Wall Rebounds Driven by Competing Entropic and Spin‐Transfer Torques in Cylindrical Nanowires

Advanced Functional Materials, EarlyView.
Domain‐wall motion in cylindrical magnetic nanowires driven by nanosecond current pulses. Low current densities efficiently displace domain walls, whereas higher currents cause rebound at the wire ends. The effect results from the interplay between spin‐transfer torque and thermally induced processes, highlighting the role of thermal gradients in ...
Elias Saugar, Jorge Marqués‐Marchán, Sara Catalano, Agustina Asenjo, Michael Foerster, Miguel Angel Niño, Manuel Vazquez, Fèlix Casanova, Arantxa Fraile Rodríguez, Rafael P. Del Real, Oksana Chubykalo‐Fesenko, Cristina Bran   +11 more
wiley   +1 more source

Exciton binding energies in carbon nanotubes from two-photon photoluminescence

, 2005
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 symmetry is the ...
A. Ruini, C. Lienau, C. Thomsen, D. Prezzi, E. Chang, E. Molinari, J. Maultzsch, M. S. Strano, R. Pomraenke, S. J. Tans, S. Reich, S. Reich, X. Qiu   +12 more
core   +1 more source

Strain-Modified RKKY Interaction in Carbon Nanotubes [PDF]

, 2015
For low-dimensional metallic structures, such as nanotubes, the exchange coupling between localized magnetic dopants is predicted to decay slowly with separation.
Duffy, J. M., Ferreira, M. S., Gorman, P. D., Power, S. R.   +3 more
core   +2 more sources