Results 91 to 100 of about 36,896 (288)

Photoswitchable Conductive Metal–Organic Frameworks

Advanced Functional Materials, EarlyView.
A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu, Mersad Mostaghimi, Abhinav Chandresh, Saibal Jana, Wolfgang Wenzel, Lars Heinke   +5 more
wiley   +1 more source

Causality, delocalization and positivity of energy

, 2000
In a series of interesting papers G. C. Hegerfeldt has shown that quantum systems with positive energy initially localized in a finite region, immediately develop infinite tails.
E. Fermi, E. Karpov, G. C. Hegerfeldt, G. C. Hegerfeldt, G. C. Hegerfeldt, G. Ordonez, G. Pronko, I. Prigogine, T. D. Newton, T. Petrosky   +9 more
core   +2 more sources

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

Advanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song, Stefan Rettinger, Chengzhang Xu, Ulrich Mansfeld, Markus Retsch   +4 more
wiley   +1 more source

Small Corrections to the Tunneling Phase Time Formulation

, 2007
After reexamining the above barrier diffusion problem where we notice that the wave packet collision implies the existence of {\em multiple} reflected and transmitted wave packets, we analyze the way of obtaining phase times for tunneling/reflecting ...
A. Enders, A. Enders, A. Enders, A. Enders, A. Haybel, A. Péres, A. Ranfagni, A.D. Baute, A.E. Bernardini, A.E. Bernardini, A.L. Baz, A.L. Xavier, A.M. Steinberg, B. Gaveau, B. Segard, C. Cohen-Tannoudji, C. Spielman, C.G.B. Garret, D. Bohm, D. Sokolorski, E.H. Hauge, E.H. Hauge, E.P. Wigner, Frank, G. Nimtz, G. Privitera, H.A. Fertig, J. Jakiel, J.P. Falck, K. Imafuku, L.A. MacColl, L.J. Wang, M. Abolhasani, M. Büttiker, M. Büttiker, M.H. Bramhall, M.J. Hagmann, M.W. Mitchell, P. Balcou, R. Landauer, R. Landauer, S. Brouard, S. Chu, S. Esposito, S. Yücel, T.E. Hartman, V. Laude, V.F. Rybachenko, V.S. Olkhovsky, V.S. Olkhovsky, V.S. Olkhovsky, V.S. Olkhovsky, V.S. Olkhovsky   +52 more
core   +1 more source

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

Advanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu, Giovanni Gammaitoni, Michael Häfner, Eduardo Villalobos‐Portillo, Carlo Marini, Matteo Bianchini   +5 more
wiley   +1 more source

Eurasian mid-latitude jet stream bridges an Atlantic to Asia summer teleconnection in heat extremes

Environmental Research Letters
Northern Europe and Northeast Asia, which are climatologically mild and temperate in early summer, both witnessed record-breaking heat extremes in June 2023.
Yu Nie, Hong-Li Ren, Jinqing Zuo, Jie Wu, Adam A Scaife, Nick J Dunstone, Steven C Hardiman   +6 more
doaj   +1 more source

Fractional revivals of superposed coherent states

, 2014
We study the dynamics of superposed wave packets in a specific nonlinear Hamiltonian which models the wave packet propagation in Kerr-like media and the dynamics of Bose-Einstein condensates. We show the dependence of initial wave packet superposition on
Rohith, M., Sudheesh, C.
core   +1 more source

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

Advanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger, Helmy Pacheco Hernandez, Yang Cui, Hongxing Hao, Vanessa Ramm, David C. Mayer, Khai‐Nghi Truong, Roland A. Fischer, Jürgen Hauer, Mariana Kozlowska, Alexander Pöthig   +10 more
wiley   +1 more source

Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)

Advanced Functional Materials, EarlyView.
Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao, Christian Weinberger, Jakob Steube, Matthias Bauer, Martin Brehm, Michael Tiemann   +5 more
wiley   +1 more source

Entanglement and purity of single- and two-photon states

, 2008
Whereas single- and two-photon wave packets are usually treated as pure states, in practice they will be mixed. We study how entanglement created with mixed photon wave packets is degraded.
A. B. U’Ren, Jun O. S. Yin, S. J. van Enk, T. Legero   +3 more
core   +1 more source