Results 41 to 50 of about 44,543 (314)

Interferometric vibration sensing in optical fibers

23rd Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics
This paper describes a portable, experimental all-fiber interferometer designed for acoustic vibration sensing using telecommunication optical fibers. The optical and electronic components of the setup are detailed. The interferometer operates on the principle of heterodyne beatnote detection, with electronic processing to produce a quadrature ...
Čížek, M. (Martin), Pravdová, L. (Lenka), Hrabina, J. (Jan), Číp, O. (Ondřej)   +3 more
openaire   +2 more sources

Nanomechanical optical fiber with embedded electrodes actuated by joule heating

, 2014
Nanomechanical optical fibers with metal electrodes embedded in the jacket were fabricated by a multi-material co-draw technique. At the center of the fibers, two glass cores suspended by thin membranes and surrounded by air form a directional coupler ...
Martha Segura, Nicholas White, Feng, Xian, Lian, Zhenggang, Podoliak, Nina, Horak, Peter, Nina Podoliak, Peter Horak, Segura, Martha, White, Nicholas, Zhenggang Lian, Xian Feng   +11 more
core   +1 more source

Optical fibre long period grating based selective vapour sensing of volatile organic compounds [PDF]

, 2010
The chemical sensing capabilities of an optical fibre long period grating (LPG) coated with a functional material are explored. The LPG period and coating thickness are chosen such that the mode transition region, characteristic of LPGs coated with ...
Tatam, Ralph P., Higson, Seamus P. J., Topliss, Stephen M., James, Stephen W., Davis, Frank   +4 more
core   +1 more source

Deciphering transcriptional plasticity in pancreatic ductal adenocarcinoma reveals alterations in sensory neuron innervation

Molecular Oncology, EarlyView.
Pancreatic sensory neurons innervating healthy and PDAC tissue were retrogradely labeled and profiled by single‐cell RNA sequencing. Tumor‐associated innervation showed a dominant neurofilament‐positive subtype, altered mitochondrial gene signatures, and reduced non‐peptidergic neurons.
Elena Genova, Michele Montrone, Uday Rangaswamy, Francesco Diversi, Irene Schiavo, Denise Ferrarini, Roberta Di Florio, Irene Longo, Michele Coscia, Nicola Zamboni, Giorgia Demontis, Lisa Veghini, Vincenzo Corbo, Remo Sanges, Paul Heppenstall   +14 more
wiley   +1 more source

Fabrication of rGO-GO Long Period Fiber Grating Using Laser Reduction Method

IEEE Photonics Journal, 2017
A laser-reduction technique is investigated to fabricate a novel long period fiber grating (LPFG), whose period is a section of graphene oxide (GO) and reduced graphene oxide (rGO) films on a side polished fiber.
Liheng Chen, Jianhui Yu, Heyuan Guan, Tingting Zhan, Tianjie Rong, Yujia Kong, Wenguo Zhu, Huihui Lu, Jun Zhang, Zhe Chen   +9 more
doaj   +1 more source

Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies

FEBS Open Bio, EarlyView.
We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli, Mohammad Nour Alsamsam, Ugnė Bagdonaitė, Van Truc Vu, Chun‐Jen Huang, Polina Kuzhir, Mindaugas Zaremba, Aurimas Kopūstas, Marijonas Tutkus   +8 more
wiley   +1 more source

Enhanced Photon-Pair Generation Based on Thin-Film Lithium Niobate Doubly Resonant Photonic Crystal Cavity

Photonics
In this work, a doubly resonant photonic crystal (PhC) cavity is proposed to enhance second harmonic generation (SHG) efficiency and photon pair generation rate (PGR). Through the exploration of geometry parameters, a band-edge mode within the light cone
Jinmian Zhu, Fengli Liu, Fangheng Fu, Yuming Wei, Tiefeng Yang, Heyuan Guan, Huihui Lu   +6 more
doaj   +1 more source

Distributed acoustic sensing with Michelson interferometer demodulation

Photonic Sensors, 2016
The distributed acoustic sensing (DAS) has been extensively studied and widely used. A distributed acoustic sensing system based on the unbalanced Michelson interferometer with phase generated carrier (PGC) demodulation was designed and tested.
Xiaohui Liu, Chen Wang, Ying Shang, Chang Wang, Wenan Zhao, Gangding Peng, Hongzhong Wang   +6 more
doaj   +1 more source

Optical anapole mode in nanostructured lithium niobate for enhancing second harmonic generation

Nanophotonics, 2020
Second harmonic generation (SHG) with a material of large transparency is an attractive way of generating coherent light sources at exotic wavelength range such as VUV, UV and visible light.
Li Yang, Huang Zhijin, Sui Zhan, Chen Huajiang, Zhang Xinyue, Huang Weian, Guan Heyuan, Qiu Wentao, Dong Jiangli, Zhu Wenguo, Yu Jianhui, Lu Huihui, Chen Zhe   +12 more
doaj   +1 more source

Brainstem and Cerebellar Volume Loss and Associated Clinical Features in Progressive Supranuclear Palsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Progressive Supranuclear Palsy (PSP) is a neurodegenerative ‘tauopathy’ with predominating pathology in the basal ganglia and midbrain. Caudal tau spread frequently implicates the cerebellum; however, the pattern of atrophy remains equivocal.
Chloe Spiegel, Timothy P. Siejka, Cassandra Marotta, Josh J. Y. Lee, Kelly Bertram, Terence J. O'Brien, Meng Law, Lucy Vivash, Ian H. Harding   +8 more
wiley   +1 more source