Results 191 to 200 of about 35,390 (284)

Transient Terahertz Oscillations During Photoinduced Polarization Topology Reconfiguration in Ferroelectric Superlattices

Advanced Science, EarlyView.
Terahertz resonances in crystalline heterostructures could close a spectral gap between conventional electronics and photonics while opening new windows on non‐equilibrium lattice dynamics. Femtosecond optical screening of the depolarization field in epitaxial PbTiO3/SrTiO3 superlattices launches a collective polar mode that oscillates near 1 THz and ...
Deepankar Sri Gyan, Hyeon Jun Lee, Xiangwei Guo, Youngjun Ahn, Samuel D. Marks, Mohammed H. Yusuf, Matthew Dawber, James M. Glownia, Diling Zhu, Takahiro Sato, Sanghoon Song, Haidan Wen, Jia‐Mian Hu, Paul G. Evans   +13 more
wiley   +1 more source

Synergistic sonothrombolysis based on coaxial confocal dual-frequency focused ultrasound and vortex beams. [PDF]

Ultrason Sonochem
Meng T, Sheng Z, Feng T, Guo G, Ma Q.
europepmc   +1 more source

Laser-Material Interactions of High-Quality Ultrashort Pulsed Vector Vortex Beams. [PDF]

Micromachines (Basel), 2021
Tang Y, Perrie W, Rico Sierra D, Li Q, Liu D, Edwardson SP, Dearden G.   +6 more
europepmc   +1 more source

Fabrication of High‐Density Multimodal Neural Probes Based on Heterogeneously Integrated CMOS

Advanced Science, EarlyView.
A chiplet‐based methodology democratizes active neural probe development on standard bulk CMOS services. This yields the first probe combining high‐density electrophysiology (416 electrodes) with calcium imaging (832 photodiodes) and complete on‐chip signal processing across 13 shanks.
Ju Hee Mun, Miji Kim, Wooyeon Shin, Yongjun Park, Kanghwan Kim, Il‐Joo Cho, Jae Won Shim, Min Soo Kim, Sunwoo Lee, Jeongjin Kim, Changhyuk Lee   +10 more
wiley   +1 more source

Longitudinal field controls vector vortex beams in anisotropic epsilon-near-zero metamaterials. [PDF]

Nat Commun
Aita V, Roth DJ, Zaleska A, Krasavin AV, Nicholls LH, Shevchenko M, Rodríguez-Fortuño FJ, Zayats AV.   +7 more
europepmc   +1 more source

MGDP: Mastering a Generalized Depth Perception Model for Quadruped Locomotion

Advanced Science, EarlyView.
ABSTRACT Perception‐based Deep Reinforcement Learning (DRL) controllers demonstrate impressive performance on challenging terrains. However, existing controllers still face core limitations, struggling to achieve both terrain generality and platform transferability, and are constrained by high computational overhead and sensitivity to sensor noise.
Yinzhao Dong, Ji Ma, Yidan Lu, Jiahui Zhang, Wanyue Li, Yeke Chen, Teng Zhang, Xuechao Chen, Zhangguo Yu, Peng Lu   +9 more
wiley   +1 more source

Monolithic silicon carbide metasurfaces for engineering arbitrary 3D perfect vector vortex beams. [PDF]

Nat Commun
Liu M, Lin P, Huo P, Qi H, Jin R, Zhang H, Ren Y, Song M, Lu YQ, Xu T.   +9 more
europepmc   +1 more source

Seedless One‐Pot Synthesis of Colloidal InAs Quantum Dots Enabling a High‐Accuracy Photoplethysmography Oximeter

Advanced Science, EarlyView.
A real‐time, non‐contact photoplethysmography (PPG) system based on InAs colloidal quantum dots (CQDs) synthesized via a seedless injection synthesis is demonstrated. The measured oxygen saturation shows considerable agreement with commercial PPG devices.
Beom Kwan Kim, Seungin Jee, Yongnam Ahn, In‐Suh Lee, Dongeon Kim, Seongchong Park, Yujin Jung, In‐Ho Bae, Se‐Woong Baek   +8 more
wiley   +1 more source

Simultaneous control of three degrees of freedom in perfect vector vortex beams based on metasurfaces. [PDF]

Nanophotonics
Li S, Zheng Y, Zhou C, He G, Shi Z, Li H, Zhou ZK.   +6 more
europepmc   +1 more source

Production of orbital angular momentum states of optical vortex beams using a vortex half-wave retarder with double-pass configuration. [PDF]

Sci Rep, 2022
Deachapunya S, Srisuphaphon S, Buathong S.   +2 more
europepmc   +1 more source