Results 71 to 80 of about 564,176 (286)
Dose-efficient scanning Compton X-ray microscopy
Light: Science & Applications, 2023 The highest resolution of images of soft matter and biological materials is ultimately limited by modification of the structure, induced by the necessarily high energy of short-wavelength radiation.
Tang Li +12 more
doaj +1 more source
Thermoelectric Modules Incorporating MgAgSb and Mg3(Sb,Bi)2 Synthesized Using a Melting Method
Advanced Engineering Materials, EarlyView.A scalable synthesis method for a thermoelectric material of MgAgSb is established. A thermoelectric power module of MgAgSb/Mg3(Sb,Bi)2 is fabricated, showing the conversion efficiency of 7.4% at ΔT = 315 K. The performance is comparable to conventional Bi2Te3 modules when they are operated with an air‐cooled heat exchanger.
Kazuo Nagase +8 more
wiley +1 more source
Attosecond magnetization dynamics in non-magnetic materials driven by intense femtosecond lasers
npj Computational Materials, 2023 Irradiating solids with ultrashort laser pulses is known to initiate femtosecond timescale magnetization dynamics. However, sub-femtosecond spin dynamics have not yet been observed or predicted.
Ofer Neufeld +4 more
doaj +1 more source
A Review on Ab Initio Approaches for Multielectron Dynamics
, 2015 In parallel with the evolution of femtosecond and attosecond laser as well as free-electron laser technology, a variety of theoretical methods have been developed to describe the behavior of atoms, molecules, clusters, and solids under the action of ...
Ishikawa, Kenichi L., Sato, Takeshi
core +1 more source
Advanced Engineering Materials, EarlyView.A statistical framework is applied to quantify the distribution of electrical resistivity among individual filaments of two commercially available carbon fiber types. Correlations between filament resistivity, tensile modulus, and diameter are examined and complemented by TEM analysis to provide new insight into filament‐level variability relevant for ...
Nils Wieja +9 more
wiley +1 more source
Journal of Modern Optics, 2008 This is a tutorial review of the basic principles and present status of free-electron lasers (FELs) with particular emphasis on high-gain FELs such as FLASH in Hamburg. With their unprecedented intensity and a pulse duration of a few 10 fs, these novel accelerator-based radiation sources in the ultraviolet and X-ray regime will open new fields in ...
openaire +3 more sources
Complete Electric Field Characterization of Ultrashort Multicolor Pulses
Ultrafast ScienceThe advancement of laser technology, producing increasingly shorter and more intricate optical pulses, has elevated the significance of precise characterization of a transient electric field, including the carrier-envelope phase.
Maximilian Kubullek +7 more
doaj +1 more source
Advanced Functional Materials, EarlyView.PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu +14 more
wiley +1 more source
Possibilities for serial femtosecond crystallography sample delivery at future light sources
Structural Dynamics, 2015 Serial femtosecond crystallography (SFX) uses X-ray pulses from free-electron laser (FEL) sources that can outrun radiation damage and thereby overcome long-standing limits in the structure determination of macromolecular crystals.
L. M. G. Chavas +2 more
doaj +1 more source
Phase-merging Enhanced Harmonic Generation Free-electron Laser
, 2013 Together with one of its variants, the recently proposed phase-merging enhanced harmonic generation (PEHG) free-electron lasers (FELs) have been systematically studied in this paper.
Deng, Haixiao +3 more
core +1 more source