Results 71 to 80 of about 292,649 (389)

Mechanically Tunable Bone Scaffolds: In Vivo Hardening of 3D‐Printed Calcium Phosphate/Polycaprolactone Inks

open access: yesAdvanced Functional Materials, EarlyView.
A 3D bone scaffold with osteogenic properties and capable of hardening in vivo is developed. The scaffold is implanted in a ductile state, and a phase transformation of the ceramic induces the stiffening and strengthening of the scaffold in vivo. Abstract Calcium phosphate 3D printing has revolutionized customized bone grafting.
Miguel Mateu‐Sanz   +7 more
wiley   +1 more source

A High-Temperature Fiber Sensor Using a Low Cost Interrogation Scheme

open access: yesSensors, 2013
Regenerated Fibre Bragg Gratings have the potential for high-temperature monitoring. In this paper, the inscription of Fibre Bragg Gratings (FBGs) and the later regeneration process to obtain Regenerated Fiber Bragg Gratings (RFBGs) in high-birefringence
Salvador Sales, David Barrera
doaj   +1 more source

Grating formation in BGG31 glass by UV exposure [PDF]

open access: yes, 1999
A three-dimensional index variation grating in bulk BGG31 glass written using neither hydrogen loading nor germanium doping is demonstrated. This material is useful for fabricating ion-exchanged waveguides, and its photosensitivity to ultraviolet (UV ...
Geraghty, D. F.   +5 more
core   +1 more source

Positive‐Tone Nanolithography of Antimony Trisulfide with Femtosecond Laser Wet‐Etching

open access: yesAdvanced Functional Materials, EarlyView.
A butyldithiocarbamic acid (BDCA) etchant is used to fabricate various micro‐ and nanoscale structures on amorphous antimony trisulfide (a‐Sb2S3) thin film via femtosecond laser etching. Numerical analysis and experimental results elucidate the patterning mechanism on gold (reflective) and quartz (transmissive) substrates.
Abhrodeep Dey   +12 more
wiley   +1 more source

Long-term stability decay of standard and regenerated Bragg gratings tailored for high temperature operation

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications
Thermal stability of both standard and regenerated Bragg gratings written in normal and photosensitive optical fibers was accessed. An apparent spectral wavelength stabilization of common gratings with no thermal hysteresis was reached after thermal ...
F. K. Coradin   +4 more
doaj   +1 more source

Biaxial FBG Vibration Sensor With a Single Edge Filter and Matching Demodulation

open access: yesIEEE Access, 2022
This work developed, simulated, and characterized a high sensitivity vibration sensor for low-frequency applications. The fiber Bragg grating (FBG) overlapping method was used to demodulate the wavelength shift of the sensing gratings, but only one FBG ...
Abraham Perez-Alonzo   +2 more
doaj   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha   +18 more
wiley   +1 more source

Multi-Directional Strain Measurement in Fiber-Reinforced Plastic Based on Birefringence of Embedded Fiber Bragg Grating

open access: yesSensors
Embedded fiber Bragg gratings are increasingly applied for in-situ strain measurement in fiber-reinforced plastics, integral to high-end aerospace equipment.
Chunhua Zhou   +4 more
doaj   +1 more source

High-Q distributed-Bragg-grating laser cavities [PDF]

open access: yes, 2011
Applying Bragg gratings in Al2O3 channel waveguides, we demonstrate distributed Bragg reflectors with Q-factors of 1.02x10e6. An integrated Al2O3:Yb3+ waveguide laser with 67% slope efficiency and 47 mW output power is achieved with such ...
Bernhardi, E.H.   +4 more
core   +2 more sources

Investigations of Bragg reflectors in nanowire lasers

open access: yes, 2012
The reflectivity of various Bragg reflectors in connection to waveguide structures, including nanowires, has been investigated using modal reflection and transmission matrices.
Skaar, Johannes   +2 more
core   +1 more source

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