Results 91 to 100 of about 8,192 (300)

Optical Rectification Effect on Chiral Metamaterials

Advances in Physics Research, 2014
Emission of terahertz (THz) radiation as a result of optical rectification of intense femtosecond laser pulses on chiral metamaterials has been observed. The chiral metamamaterials has simplified fabrication design but still capable to exhibit different refractive index for each circular polarization. Nonlinear response of metamaterials was observed by
Matsui Takahiro, Satoshi Tomita, Arief Hermanto, Kamsul Abraha, Juliasih Partini   +4 more
openaire   +2 more sources

Learning Highly Dynamic Skills Transition for Quadruped Jumping Through Constrained Space

Advanced Robotics Research, EarlyView.
A quadruped robot masters dynamic jumps through constrained spaces with animal‐inspired moves and intelligent vision control. This hierarchical learning approach combines imitation of biological agility with real‐time trajectory planning. Although legged animals are capable of performing explosive motions while traversing confined spaces, replicating ...
Zeren Luo, Jiahui Zhang, Yimin Han, Ji Ma, Minghao Lu, Ioannis Havoutis, Peng Lu   +6 more
wiley   +1 more source

Improving the Robustness of Visual Teach‐and‐Repeat Navigation Using Drift Error Correction and Event‐Based Vision for Low‐Light Environments

Advanced Robotics Research, EarlyView.
Visual teach‐and‐repeat (VTR) navigation allows robots to learn and follow routes without building a full metric map. We show that navigation accuracy for VTR can be improved by integrating a topological map with error‐drift correction based on stereo vision.
Fuhai Ling, Ze Huang, Tony J. Prescott
wiley   +1 more source

High-repetition-rate strong-field terahertz source by optical rectification in DSTMS crystals

High Power Laser Science and Engineering
We present the generation of high-repetition-rate strong-field terahertz (THz) pulses from a thin 4-N,N-dimethylamino-4’-N’-methyl-stilbazolium 2,4,6-trimethylbenzenesulfonate (DSTMS) organic crystal pumped by an ytterbium-doped yttrium aluminum garnet ...
Zhuorui Zheng, Kang Wang, Hongyang Li, Xianze Meng, Ye Tian, Liwei Song   +5 more
doaj   +1 more source

Terahertz Emission via Optical Rectification in a Metal-Free Perovskite Crystal. [PDF]

ACS Photonics, 2023
Gallop NP, Sirbu D, Walker D, Lloyd-Hughes J, Docampo P, Milot RL.   +5 more
europepmc   +1 more source

Muscle Control of an Extra Robotic Digit

Advanced Robotics Research, EarlyView.
This study compares muscle‐ and movement‐based control for operating a supernumerary robotic thumb. While movement control performs better in the proposed tasks, muscle‐based (EMG) control promotes broader motor learning. The results highlight the promise and challenges of using biosignals for human augmentation, offering new insights into intuitive ...
Julien Russ, Lucy Dowdall, Francesco Cenciarelli, Kitty Goodridge, Mabel Ziman, Hristo Dimitrov, Danielle Clode, Tamar R. Makin   +7 more
wiley   +1 more source

Nonlinear THz Generation through Optical Rectification Enhanced by Phonon-Polaritons in Lithium Niobate Thin Films. [PDF]

ACS Photonics, 2023
Carletti L, McDonnell C, Arregui Leon U, Rocco D, Finazzi M, Toma A, Ellenbogen T, Della Valle G, Celebrano M, De Angelis C.   +9 more
europepmc   +1 more source

Generation of 0.7 mJ multicycle 15 THz radiation by phase-matched optical rectification in lithium niobate

, 2020
We demonstrate efficient multicycle terahertz pulse generation at 14.6 THz from large-area lithium niobate crystals by using high-energy (up to 2 J) femtosecond. Thsapp hire laser pulses.
Sung, Jae Hee, Kim, Ki-Yong, Kang, Chul, Lee, Seong Ku, Jang, Dogeun   +4 more
core   +1 more source

Multi‐Enzyme Mimetic Molybdenum Nitride Nanozymes Reshape Subgingival Microenvironment for Synergistic Periodontitis Therapy via ROS Regulation and Microbiome Remodeling

Advanced Science, EarlyView.
ABSTRACT Periodontitis, a chronic inflammatory disease initiated and sustained by plaque microorganisms and host immune response, remains an intractable oral disease and a leading cause of tooth loss worldwide. Traditional mechanical debridement and adjunctive antibiotic or antiseptic therapy often shows limited efficacy due to the complex anatomical ...
Weiyu Zhang, Zhongwei Yang, Yunfan Zhang, Longwei Wang, Xiaoyu Zhang, Jiahui Mao, Yizhi Dai, Yifan Yuan, Mingge Wang, Xin Yang, Xin Yu, Jing Liu, Chunying Chen   +12 more
wiley   +1 more source

Multicycle terahertz pulse generation by optical rectification in LiNbO$_3$, LiTaO$_3$, and BBO crystals

, 2020
We report multicycle, narrowband, terahertz radiation at 14.8 THz produced by phase-matched optical rectification of femtosecond laser pulses in bulk lithium niobate (LiNbO$_3$) crystals.
Ki-Yong Kim (5778842), Dogeun Jang (7388336)   +1 more
core   +1 more source