Results 111 to 120 of about 32,897 (303)
, 2014 We use 2D electronic photon-echo spectroscopy to study ultrafast singlet exciton fission in pentacene. Our observations and analysis of vibronic coherences provide insight to the role played by dark multiexcitonic states in mediating ...
Bakulin, Artem A. +16 more
core +1 more source
Giant Orbital Rashba–Edelstein Effect in Crystalline Cu2O/Cu Heterostructures
Advanced Materials, EarlyView.An enhanced orbital Rashba–Edelstein effect is demonstrated in a crystalline Cu2O/Cu heterostructure, compared to naturally oxidized CuOx structures, highlighting the critical role of crystallinity and interface control in orbital torque generation. The resulting spin torque conductivity exceeds that of Pt, indicating the potential of orbital torque ...
San Ko +10 more
wiley +1 more source
Terahertz Modulation of Even-order Polarization in GaAs
IEEE Photonics JournalThe application of electric fields induces changes in the symmetry of crystals, which can be observed spectroscopically as variations in the even harmonic generation. In this study, we report the ultrafast modulation of GaAs crystal symmetry using strong
Jianhua Sang +4 more
doaj +1 more source
Ultra-fast force-clamp spectroscopy data on the interaction between skeletal muscle myosin and actin
Data in Brief, 2019 Ultrafast force-clamp spectroscopy is a single molecule technique based on laser tweezers with sub-millisecond and sub-nanometer resolution. The technique has been successfully applied to investigate the rapid conformational changes that occur when a ...
Manuela Maffei +5 more
doaj +1 more source
Advanced Materials, EarlyView.An orbital‐hybridizable nanoseed (OHNS) interphase induces strong orbital hybridization between Zn and carbon edges, accelerating Zn nucleation while suppressing 2D surface diffusion. This interfacial electronic regulation drives uniform, dense, and (002)‐oriented Zn growth, enabling stable and fast charging behavior in anode‐free aqueous Zn batteries.
Won‐Yeong Kim +16 more
wiley +1 more source
, 2012 The ultrafast carrier relaxation processes in CdTe quantum dots are investigated by femtosecond fluorescence up-conversion spectroscopy. Photo-excited hole relaxing to the edge of the forbidden gap takes a maximal time of ~ 1.6 ps with exciting at 400 nm,
Zhang, X.-Y. +7 more
core +1 more source
Second‐Harmonic Hyper‐Mie Optical Activity Enables Closed‐Loop Chiral Photochemistry
Advanced Materials, EarlyView.Nonlinear chiral photochemistry is demonstrated in CdTe/CdO nanohelices, where circularly polarized infrared light both drives and tracks photo‐oxidation via second‐harmonic scattering. This closed‐loop process reveals real‐time structural evolution, including shell fracturing and core exposure, accompanied by a transition from hyper‐Mie to hyper ...
Hoyeon Choi +6 more
wiley +1 more source
Ultrafast ScienceTime-resolved transient absorption (TA) spectroscopy measurement technology provides detailed information into the ultrafast dynamics by tracking the transitions and deactivation processes of the excited-state carriers, which holds vast potential for ...
Xiaxia Qin +7 more
doaj +1 more source
Nature Communications, 2018 Electron dynamics in plasmonic nanoparticles are often studied with transient absorption spectroscopy. Here, Lietard et al. apply two-dimensional electronic spectroscopy, a method generally used for molecular spectroscopy, to study ultrafast nonlinear ...
Aude Lietard +3 more
doaj +1 more source
Ultrafast dynamics of highly constrained azobenzene macrocycles
, 2019 The ultrafast photoisomerization of model azobenzene macrocycles was studied by transient absorption spectroscopy. Our results reveal a strong dependence of the dynamics and the overall molecular properties on the geometric constraints and the ...
Herman A. Wegner +15 more
core +1 more source