Results 121 to 130 of about 35,975 (303)

Monitoring the Etching Process of Hi-Bi Fiber Through a Fiber Loop Mirror

open access: yesIEEE Photonics Journal, 2017
A method for monitoring the etching process of Hi-Bi fiber is proposed and demonstrated. The birefringence of the etching fiber is accurately calculated by tracking the shift of the interference spectrum in a high-birefringence fiber loop mirror ...
Danling Wu, Jun Zhu, Hui Wang, Benli Yu
doaj   +1 more source

Optical Coherence Tomography for Examination of Parchment Degradation

open access: yes, 2006
A novel application of Optical Coherence Tomography utilizing infrared light of 830 nm central wavelength for non invasive examination of the structure of parchment, some covered with iron gall ink, is presented.
Pircher, M   +7 more
core  

Towards Advanced Intelligent and Perceptive Soft Grippers

open access: yesAdvanced Intelligent Systems, EarlyView.
Implementing soft yet strong and intelligent soft grippers request innovative and creative solutions in designing soft bodies and seamlessly integrating actuated systems with hierarchical sensing. This review systematically analyses soft grippers with a deep understanding of core components, from fundamental design principles to actuation and sensing ...
Haneul Kim   +4 more
wiley   +1 more source

Birefringence upper limit analysis of low birefringence fibers employed in the Faraday effect current sensors

open access: yes
The theoretical model of the Faraday rotation in the low birefringence optical fiber is proposed to serve as a convenient tool for the determination of the birefringence upper limit allowed to retain current sensor sensitivity.
Vukovic, N.   +4 more
core  

Thermally Stable Organic Synaptic Transistors Using a High‐Tg Polymer Electret

open access: yesAdvanced Intelligent Systems, EarlyView.
A high–glass‐transition‐temperature cyclic olefin copolymer (COC) electret enables thermally stable organic synaptic transistors for neuromorphic operation in harsh environments. UV–ozone treatment increases the trap density in COC, providing robust multilevel conductance and key synaptic functions (excitatory postsynaptic current/ inhibitory ...
Hoyoung Cho   +9 more
wiley   +1 more source

Ferroelectric Nematic Liquid Crystals Showing High Birefringence

open access: yesAdvanced Science
High birefringence nematic liquid crystals are particularly demanded for adaptive optics applications in the infrared spectrum because it enable a thinner cell gap for achieving fast response time and improved diffraction efficiency.
Yaohao Song   +5 more
doaj   +1 more source

Electrooptic electric field sensor for dc and extra-low-frequency measurement

open access: yes, 1998
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The thesis reports the results of the research carried out towards the development of an electrooptic sensor for DC and extra low frequency electric field ...
Bordovsky, Michael
core  

X-ray birefringence imaging

open access: yes, 2014
The polarizing optical microscope has been used since the 19th century to study the structural anisotropy of materials, based on the phenomenon of optical birefringence.
Collins, Stephen P.   +5 more
core   +1 more source

Guiding and Manipulating Light Fields in Microstructured Liquid Crystals

open access: yesAdvanced Physics Research, EarlyView.
This review summarizes recent advances in guided‐wave optics enabled by microstructured liquid crystal (LC) devices, covering their fundamental material properties, key degree of freedom for dynamic light field manipulations. The advances of linear guided‐wave optics, nonlinear‐optics with spatial optical solitons, and microlasers in LC‐based devices ...
Shan‐shan Chang   +2 more
wiley   +1 more source

Collagen imaging reveals synergistic effects of sutures and host-donor misalignment on topographical irregularities in penetrating keratoplasty.

open access: yesPLoS ONE
PurposeMitigating unwanted refractive errors is crucial for surgeons to ensure quality vision after penetrating keratoplasty (PK). The primary objective of the present study is to highlight the importance of microstructural matching of the host and the ...
Himanshu Gururani   +5 more
doaj   +1 more source

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