Results 101 to 110 of about 32,897 (303)

Phase Engineering of Atomically Precise Nanoclusters (APNCs) of Gold and Beyond

Advanced Materials, EarlyView.
Engineering the structural phase of materials is of paramount importance for both fundamental research and practical applications. In this Review, we summarize the recent progress in controlling the phases of atomically precise nanoclusters (APNCs) of gold, silver and copper, as well as bimetallic systems. The phase‐enabled material properties of APNCs
Yitong Wang, Avirup Sardar, Weijie Ji, Zhongyu Liu, Rongchao Jin   +4 more
wiley   +1 more source

Quantum coherence controls the charge separation in a prototypical artificial light harvesting system

EPJ Web of Conferences, 2013
Ultrafast spectroscopy and quantum-dynamics simulations of an artificial supramolecular light-harvesting system — a supramolecular triad - provide strong evidence that the quantum-correlated wavelike motion of electrons and nuclei on a timescale of few ...
Schramm H., Cerullo G., Maiuri M., Brida D., Molinari E., Rubio A., Spallanzani N., Rozzi C. A., Falke S.M., Christoffers J., Lienau C.   +10 more
doaj   +1 more source

Time-resolved FRET fluorescence spectroscopy of visible fluorescent protein pairs

, 2010
Förster resonance energy transfer (FRET) is a powerful method for obtaining information about small-scale lengths between biomacromolecules. Visible fluorescent proteins (VFPs) are widely used as spectrally different FRET pairs, where one VFP acts as a ...
Birch, D.J.S., Laptenok, S., Visser, N.V., Hoek, A., van, Laptenok, S.P., Borst, J.W., Visser, A.J.W.G., van Hoek, A., Brochon, J.C.   +8 more
core   +1 more source

Ultrafast non-adiabatic relaxation dynamics of furan theoretically addressed for tr-AttoXAFS

, 2023
We employ a multi-physics approach comprised of on-the-fly surface hopping and various quantum chemical methods to examine the ultrafast relaxation dynamics of furan induced by a strong-field excitation and measured by attosecond carbon K-edge ...
Summers, A., Biegert, J., Ziems, K.M., Reduzzi, M., Chien, Y.-H., Severino, S., Sun, H.-W., Gräfe, Stefanie   +7 more
core   +1 more source

A Super‐Adhesive Air Filter With Capillarity‐Mediated Spontaneous Particle Absorption via Dynamic Bond Exchange

Advanced Materials, EarlyView.
We address the inherently weak particle adhesion of conventional air filters by coating a dynamically crosslinked adhesive layer that delivers capillarity‐driven strong adhesion and particle absorption mediated by dynamic bond exchange. The resulting enhancement in particle adhesion enables efficient ultrafast (up to 20 m s−1) and omnidirectional ...
Junyong Park, Hyeri Jeon, Hyunwoong Park, Ji Min Lee, Yeomyung Yoon, Gyeong Hwan Choi, Sazzadul A. Rahat, Dong Wook Lee, Sohdam Jeong, Jonathan T. Pham, Chae Bin Kim, Sanghyuk Wooh   +11 more
wiley   +1 more source

Design and implementation of an optimal laser pulse front tilting scheme for ultrafast electron diffraction in reflection geometry with high temporal resolution

Structural Dynamics, 2017
Ultrafast electron diffraction is a powerful technique to investigate out-of-equilibrium atomic dynamics in solids with high temporal resolution. When diffraction is performed in reflection geometry, the main limitation is the mismatch in group velocity ...
Francesco Pennacchio, Giovanni M. Vanacore, Giulia F. Mancini, Malte Oppermann, Rajeswari Jayaraman, Pietro Musumeci, Peter Baum, Fabrizio Carbone   +7 more
doaj   +1 more source

Detection of Metabolites by Proton Ex Vivo NMR, in Vivo MR Spectroscopy Peaks and Tissue Content Analysis: Biochemical-Magnetic Resonance Correlation: Preliminary Results

, 2009
*Aim*: Metabolite concentrations by in vivo magnetic resonance spectroscopy and ex vivo NMR spectroscopy were compared with excised normal human tissue relaxation times and tissue homogenate contents. *Hypothesis*: Biochemical analysis
Madan Rehani, Rakesh Sharma, Arun Agrawala   +2 more
core  

Molecular dynamics studies of ultrafast laser-induced phase and structural change in crystalline silicon

, 2012
In this work, thermodynamic phenomena in crystalline silicon irradiated by an ultrafast laser pulse were studied using the method of molecular dynamics simulations. The Stillinger-Weber potential was used to model the crystalline silicon. The temperature
Yang, Chengjuan, Xu, Xianfan, Wang, Yaguo   +2 more
core   +1 more source

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

Advanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen, Zhanxi Fan, Jingjie Ge, Qiyuan He, Zhuangchai Lai, Jiawei Liu, Chaoliang Tan, Hua Zhang   +7 more
wiley   +1 more source

High Power 4.2-Cycle Mid-Infrared Pulses From a Self-Compression Optical Parametric Oscillator

IEEE Photonics Journal, 2018
We demonstrate the generation of few cycle mid-infrared (MIR) pulses from a self-compressed optical parametric oscillator (OPO), synchronously pumped by a 105 fs Yb3+ doped fiber laser system. By using a ring cavity design, 4.2-cycle (45.3 fs) MIR
Jintao Fan, Chenglin Gu, Ruoyu Liao, Lu Chai, Minglie Hu   +4 more
doaj   +1 more source