Results 121 to 130 of about 81,116 (318)

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

Simulation of a molecular QCA wire [PDF]

, 2013
Molecular Quantum Dot Cellular Automata (MQCA) are among the most promising emerging technologies for the expected theoretical operating frequencies (THz), the high device densities and the non-cryogenic working temperature.
Demarchi, Danilo, Graziano, Mariagrazia, Pulimeno, Azzurra, Piccinini, Gianluca   +3 more
core  

Efficient single photon source based on μ-fibre-coupled tunable microcavity

, 2015
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (20070093863, 2014M3C1A3052537).Efficient and fast on-demand single photon sources have been sought after as critical components of ...
Lee, Chang-Min, Höfling, Sven, Lim, Hee-Jin, Maier, Sebastian, Schneider, C., Lee, Y.-H., Lee, C.-M., Schneider, Christian, Maier, S., Lee, Yong-Hee, Kamp, M., Kamp, Martin, Lim, H.-J.   +12 more
core   +1 more source

Unraveling MXene Oxidation Mechanisms Under Realistic Gas Environments by In Situ Gas‐Cell TEM

Advanced Functional Materials, EarlyView.
Real‐time visualization of MXene degradation reveals a fundamental oxidation mechanism under oxygen and moisture environments. Using in situ gas‐cell electron microscopy, this study demonstrates that oxygen degradation drives a thermodynamically controlled high‐temperature transformation into mixed rutile/anatase phases.
Yongfa Cheng, Kunmo Koo, Zizhen Cai, Paty Meza, Yu Wen, Byungseok Seo, Yukun Liu, Xiaobing Hu, Vinayak P. Dravid   +8 more
wiley   +1 more source

Exciton in closed and opened quantum dot

Condensed Matter Physics, 2007
The theory of exciton spectrum in spherically symmetric states for the three- shell closed spherical quantum dot is proposed. The evolution of the exciton spectrum while varying the outer well thickness from zero (stationary spectrum of single closed ...
M.V.Tkach, Ju.O.Seti
doaj   +1 more source

Entropy of a Double Quantum Dot

Physical Review Letters
Main text 5 pages, 3 figures + supplementary 12 pages, 11 ...
David Kealhofer, Christoph Adam, Max J. Ruckriegel, Petar Tomić, Benedikt Kratochwil, Christian Reichl, Yigal Meir, Werner Wegscheider, Thomas Ihn, Klaus Ensslin   +9 more
openaire   +3 more sources

Modelling the polarisation mode control of single quantum-dot emission in elliptical micro-pillar microcavities based on DBR mirror pairs using the FDTD method

, 2006
We use the finite difference time domain method (FDTD) to investigate polarisation control of single-photon emission from single quantum dots confined in elliptical micro-pillar microcavities.
Cryan, MJ, C. J. Railton, I. J. Craddock, Rarity, JG, T. Cao, Ivanov, P, Craddock, IJ, Ho, Y-LD, Cao, T, P. S. Ivanov, Y. -L. D. Ho, Railton, CJ, M. J. Cryan, J. G. Rarity   +13 more
core   +1 more source

Spins in quantum dots : hyperfine interaction, transport, and coherent control [PDF]

, 2008
This thesis deals with several topics related to spin dynamics and transport of electrons in quantum dots. We begin with an introduction in Chapter 1, where we review several important aspects of quantum dots and the microscopic Hamiltonians governing
Coish, William Anthony
core   +1 more source

Magnetic‐Field Control of Surface States in CoFe2O4 Thin Films for Nitrate Electroreduction to Ammonia

Advanced Functional Materials, EarlyView.
Magnetic‐field‐assisted CVD of heterometallic single‐source precursors modulates thin‐film surface electronic structure and interfacial charge transfer. Field‐grown (Cobalt ferrite‐1T)CF‐1T films exhibit stabilized electronic states, lower kinetic barriers, and markedly enhanced nitrate‐to‐ammonia electrocatalysis versus (Cobalt ferrite‐0T) CF‐0T ...
Touraj Karimpour, Younes Mousazade, Simon Diel, Shilendra Kumar Sharma, Tisita Das, Nathália C. Verissimo, Thomas Fischer, Ziyaad Aytuna, Andreas Lichtenberg, Sudip Chakraborty, Marcel Risch, Sanjay Mathur   +11 more
wiley   +1 more source

A Molecular Shielding Strategy to Develop Low Protein Binding, Renal Clearable Pan‐Cancer Near‐Infrared Probes

Advanced Functional Materials, EarlyView.
A molecular shielding strategy to convert “protein‐sticky” and “non‐tumor specific” clinical ICG dye, into a “low protein binding” and “tumor‐targeting” dye with prolonged blood circulation and renal clearance is described. These shielded ICGs demonstrate strong tumor accumulation and optimal tissue clearance, resulting in high tumor‐to‐background ...
Li Xiang, Kailin Mooney, Mingchong Dai, Morgan R. Stewart, Samantha Holland, Michael I. Henderson, Samuel Drennan, Ramon F. Barajas Jr., Jared M. Fischer, Adem Yildirim   +9 more
wiley   +1 more source