Results 121 to 130 of about 30,908 (277)

Simultaneous mapping of the ultrafast time and fluence dependence of the laser-induced insulator-to-metal transition in magnetite

Structural Dynamics
Pump-probe methods are a ubiquitous tool in the field of ultrafast dynamic measurements. In recent years, x-ray free-electron laser experiments have gained importance due to their ability to probe with high chemical selectivity and at atomic length ...
J. O. Schunck, P. S. Miedema, R. Y. Engel, S. Dziarzhytski, G. Brenner, N. Ekanayake, C.-F. Chang, P. Bougiatioti, F. Döring, B. Rösner, C. David, C. Schüßler-Langeheine, M. Beye   +12 more
doaj   +1 more source

Engineering Active Metal Oxide Interfaces on MOF‐Derived 3D Carbon Architecture for Small‐Molecule Biosensing

Advanced Materials Interfaces, EarlyView.
MOFs awaken graphene. MOF‐assisted ultrafast laser writing patterns porous laser‐induced graphene with CuO‐active nanodomains, creating an aptamer‐ready interface for small‐molecule capture. Coupled to an extended‐gate FET, the hybrid converts subtle biochemical binding into a clear electrical signal for resilient cortisol sensing in aqueous media ...
Co Dang Pham, Nam‐Trung Nguyen, Tuan‐Khoa Nguyen   +2 more
wiley   +1 more source

Lead‐Free Bismuth Halide Perovskite Memristors: Low‐Voltage Switching and Physical Modeling of Resistive Hysteresis

Advanced Materials Technologies, EarlyView.
Lead‐free bismuth halide perovskite memristors exhibit stable low‐voltage resistive switching behavior. The conductance‐activated quasi‐linear memristor model quantitatively reproduces the experimental hysteresis, confirming ion migration‐driven filament dynamics.
So‐Yeon Kim, Gonzalo Rivera‐Sierra, Bitania Shiferaw Mengesha, Benjamin Iniguez, Juan Bisquert   +4 more
wiley   +1 more source

Enhancing Triplet Excitons Lifetime Through Controlled Intermolecular Interactions

Advanced Optical Materials, EarlyView.
Singlet fission (SF) is investigated in pentacene embedded in a surface‐anchored metal–organic framework, enabling a molecular arrangement inaccessible in pure organic crystals. This architecture changes the singlet fission dynamics significantly and enhances the triplet lifetime by almost four orders of magnitude.
Martin Richter, Muhammed Jeneesh Kariyottukuniyil, Zhiyun Xu, Philipp Ludwig, Pavel V. Kolesnichenko, Christian Huck, Uwe H. F. Bunz, Christof Wöll, Wolfgang Wenzel, Petra Tegeder   +9 more
wiley   +1 more source

Incorporating Si into Sb2Se3: Tailoring Optical Phase Change Materials via Nanocomposites

Advanced Optical Materials, EarlyView.
We study the structural, optical, and thermal effects of adding silicon to Sb2Se3 and demonstrate that the as‐deposited solid solution phase segregates after electro‐thermal switching, creating a nanocomposite with effective‐medium properties and a phase‐change response.
Chih‐Yu Lee, Yi‐Siou Huang, Felix Adams, Chuanyu Lian, Hongyi Sun, Jie Zhao, Zichao Ye, Nathan Youngblood, Juejun Hu, Leslie H Allen, Yifei Mo, Ichiro Takeuchi, Carlos A Ríos Ocampo   +12 more
wiley   +1 more source

Design of a Cobalt‐Free Maraging Steel with Ultra‐High Strength of 2.3 GPa Through Additive Manufacturing

Advanced Science, EarlyView.
A computationally designed, cobalt‐free maraging steel tailored for additive manufacturing achieves an ultra‐high tensile strength of 2.3 GPa with 5.7% elongation. This exceptional strength‐ductility synergy stems from high‐density core‐shell Ni3Ti/NiAl nanoprecipitates, a crack‐resistant composition, and a fine equiaxed grain structure enabled by ...
Hu Li, Shubo Gao, Liming Tan, Weiming Ji, Liuliu Han, Kun Zhou, Yong Liu   +6 more
wiley   +1 more source

Compact laser-driven plasma X-ray source for time-resolved diffraction, spectroscopy and imaging experiments at ELI Beamlines

Journal of Synchrotron Radiation
In this work, experimentally measured characteristics of a kilohertz laser-driven Cu plasma X-ray source that was recently commissioned at the ELI Beamlines facility are reported. The source can be driven either by an in-house developed high-contrast sub-
Y. Pulnova, T. Parkman, B. Angelov, I. Baranova, A. Zymaková, S. Cipiccia, L. Fardin, B. A. Yorke, R. Antipenkov, D. Peceli, O. Hort, D.-D. Mai, J. Andreasson, J. Nejdl   +13 more
doaj   +1 more source

Ultrafast charge relocation in an ionic crystal probed by femtosecond x-ray powder diffraction

EPJ Web of Conferences, 2013
Transient electron density maps of potassium dihydrogen phosphate(KH2PO4, KDP) are derived from femtosecond x-ray powder diffraction patterns. Upon photoexcitation, the low-frequency TO soft mode is elongated impulsively and modulates the electronic ...
Elsaesser T., Stingl J., Rothhardt P., Zamponi F., Woerner M.   +4 more
doaj   +1 more source

Electron‐Mediator‐Free Microfluidic Photocatalytic Coenzyme Regeneration with 100% Conversion Efficiency within 126 S

Advanced Science, EarlyView.
Discover a groundbreaking mediator‐free photocatalytic method for coenzyme NAD(P)H regeneration using BiOBr nanosheets in a microfluidic chip. This study achieves 100% NAD+ to NADH conversion in 126 s, maintaining >87% efficiency over 32 h. Explore how photocatalysis and microfluidics combine to offer a sustainable, scalable solution for green ...
Yao Chai, Liang Wan, Zirui Pang, Xu Li, Zixuan Jia, Heng Jiang, Chi Chung Tsoi, Huaping Jia, Jinni Shen, Zizhong Zhang, Jinlin Long, Fengjia Xie, Yanmei Chen, Xuming Zhang   +13 more
wiley   +1 more source

Ultrafast x-ray diffraction study of melt-front dynamics in polycrystalline thin films. [PDF]

Sci Adv, 2020
Assefa TA, Cao Y, Banerjee S, Kim S, Kim D, Lee H, Kim S, Lee JH, Park SY, Eom I, Park J, Nam D, Kim S, Chun SH, Hyun H, Kim KS, Juhas P, Bozin ES, Lu M, Song C, Kim H, Billinge SJL, Robinson IK.   +22 more
europepmc   +1 more source