Results 141 to 150 of about 2,145,711 (307)

Observation of a Higher‐Order End Topological Insulator in a Real Projective Lattice

Advanced Science
The modern theory of quantized polarization has recently extended from 1D dipole moment to multipole moment, leading to the development from conventional topological insulators (TIs) to higher‐order TIs, i.e., from the bulk polarization as primary ...
Ce Shang, Shuo Liu, Caigui Jiang, Ruiwen Shao, Xiaoning Zang, Ching Hua Lee, Ronny Thomale, Aurélien Manchon, Tie Jun Cui, Udo Schwingenschlögl   +9 more
doaj   +1 more source

High-order cylindrical vector beams with tunable topological charge up to 14 directly generated from a microchip laser with high beam quality and high efficiency

APL Photonics, 2019
Large topological charge optical vortex beams carrying orbital angular momentum have potential applications on optical trapping, optical communication with high capacity, quantum information processing.
Dimeng Chen, Yu Miao, Hao Fu, Hongsen He, Jia-fei Tong, Jun Dong   +5 more
semanticscholar   +1 more source

Smarter Sensors Through Machine Learning: Historical Insights and Emerging Trends across Sensor Technologies

Advanced Functional Materials, EarlyView.
This review highlights how machine learning (ML) algorithms are employed to enhance sensor performance, focusing on gas and physical sensors such as haptic and strain devices. By addressing current bottlenecks and enabling simultaneous improvement of multiple metrics, these approaches pave the way toward next‐generation, real‐world sensor applications.
Kichul Lee, Osman Gul, Yeongjae Kwon, Jaeseok Jeong, Seokjoo Cho, Jihyeon Ahn, Jehee Yu, Cheolmin Kim, Donho Lee, Hyeonseok Han, Byeongju Lee, Jungrak Choi, Ji‐Hwan Ha, Yongrok Jeong, Kyungnam Kang, Ali Javey, Junseong Ahn, Inkyu Park   +17 more
wiley   +1 more source

Mechanotransducing Organic Electrochemical Diode for Crosstalk‐Inhibited Artificial Skin

Advanced Functional Materials, EarlyView.
An innovative approach is presented to a stretchable mechanotransducing diode that unifies rectification and tactile‐sensing functionality. This approach enables to fabricate the diode that maintains a large rectification ratio (5 × 102) at a high operational frequency (100 Hz).
Taeyeong Kim, Seunggoo Baek, Garrett Lecroy, Hyeongseok Choi, Wonjeong Suh, Woosung Cho, Alberto Salleo, Unyong Jeong   +7 more
wiley   +1 more source

High-Capacity Near-Infrared Optical Vortex Sorting and Detection by Nonlinear Dammann Vortex Grating

Photonics
This paper demonstrates the sorting and detection of near-infrared vortex light using a nonlinear Dammann vortex grating. By incorporating a forked structure into the nonlinear Dammann grating, the resulting nonlinear Dammann vortex grating is capable of
Hui Zhao, Ruwei Zhao, Qilu Liu, Yan Sheng, Tianxiang Xu   +4 more
doaj   +1 more source

Measurement of Orbital Angular Momentum by Self-Interference Using a Plasmonic Metasurface

IEEE Photonics Journal, 2016
We present a flexible method for measuring the orbital angular momentum (OAM) of a linearly polarized beam by means of a metasurface composed of a V-shaped gold plasmonic antenna.
Xiaolin Chen, Hailong Zhou, Mian Liu, Jianji Dong   +3 more
doaj   +1 more source

Topological origin of quantized transport in non-Hermitian Floquet chains

Physical Review Research, 2020
We show that non-Hermiticity enables topological phases with unidirectional transport in one-dimensional Floquet chains. The topological signatures of these phases are noncontractible loops in the spectrum of the Floquet propagator that are separated by ...
Bastian Höckendorf, Andreas Alvermann, Holger Fehske   +2 more
doaj   +1 more source

Selective Charge Injection via Topological van der Waals Contacts for Barrier‐Free p‐Type TMD Transistors

Advanced Functional Materials, EarlyView.
 Topological van der Waals contacts represent a new class of electrodes for 2D semiconductors, enabling precise control of the Schottky barrier height (SBH) and contact resistance (RC) through interlayer distance and orbital hybridization engineering. In Se‐based transition metal dichalcogenides, these contacts achieve an ultralow SBH of 7 meV, RC of 0.
Soheil Ghods, Ho‐Chan Jang, Jun‐Hui Choi, Min Woo Kim, Hyunjin Lee, Tae‐Hoon Kim, Keun Heo, Hyung Jun Kwun, Taehun Lee, Yoon Kyeung Lee, Sang Hoon Lee, Seung‐Il Kim, Woonhyuk Baek, Sukang Bae, Ji‐Yun Moon, Jae‐Hyun Lee   +15 more
wiley   +1 more source

Non-extensive entropy and holographic thermodynamics: topological insights

European Physical Journal C: Particles and Fields
In this paper, we delve into the thermodynamic topology of AdS Einstein–Gauss–Bonnet black holes, employing non-extensive entropy formulations such as Barrow, Rényi, and Sharma–Mittal entropy within two distinct frameworks: bulk boundary and restricted ...
Saeed Noori Gashti, Behnam Pourhassan
doaj   +1 more source

Charges and Electromagnetic Radiation as Topological Excitations [PDF]

Advances in High Energy Physics, 2017
We discuss a model with stable topological solitons in Minkowski space with only three degrees of freedom, the rotational angles of a spatial Dreibein. This model has four types of solitons differing in two topological quantum numbers which we identify with electric charge and spin.
openaire   +4 more sources