Results 101 to 110 of about 82,664 (317)
An FBG Optical Approach to Thermal Expansion Measurements under Hydrostatic Pressure
Sensors, 2017 We report on an optical technique for measuring thermal expansion and magnetostriction at cryogenic temperatures and under applied hydrostatic pressures of 2.0 GPa. Optical fiber Bragg gratings inside a clamp-type pressure chamber are used to measure the
Priscila F. S. Rosa +7 more
doaj +1 more source
Unveiling Localized Heat in Lithium‐Ion Cells for Intelligent Temperature Sensing
Advanced Energy and Sustainability Research, EarlyView.Heat generation, thermal responses, and intelligent management in batteries. Lithium‐ion batteries (LIBs) power electric vehicles, portable electronics, and grid‐scale storage, yet their safety, performance, and lifetime are constrained by thermal effects.
Yunke Wang +6 more
wiley +1 more source
High-efficiency ultraviolet inscription of Bragg gratings in microfibers
IEEE Photonics Journal, 2012 In this paper, we demonstrate high-efficiency inscription of Bragg gratings in microfiber. Strong Bragg gratings are easily inscribed using a 193-nm excimer laser and phase mask in microfiber drawn from the 62.5/125- μm standard multimode fiber ...
Yang Ran +5 more
doaj +1 more source
Fiber Bragg gratings for low-temperature measurement.
Optics Express, 2014 We demonstrate the use of fiber Bragg gratings (FBGs) as a monolithic temperature sensor from ambient to liquid nitrogen temperatures, without the use of any auxiliary embedding structure. The Bragg gratings, fabricated in three different types of fibers
Elton Soares de Lima Filho +3 more
semanticscholar +1 more source
Advanced Intelligent Systems, EarlyView.A compact and flexible wearable force myography sensor based on optical fiber technology detects muscle activity through pressure‐induced light loss. The sensor offers high sensitivity for detecting subtle force and finger motion changes, along with excellent signal stability under dynamic and sweating conditions.
Chongyoung Chung +3 more
wiley +1 more source
Stretchable fiber-Bragg-grating-based sensor
Optics Letters, 2018 A fiber-Bragg-grating-(FBG)-based sensor is a very popular fiber optic sensor due to its simplicity, mature fabrication technology, and sensitivity to a number of physical stimuli. However, due to the stiff nature of optical fiber, it is impossible to heavily stretch a FBG sensor.
Li Xu +4 more
openaire +2 more sources
Advanced NanoBiomed Research, EarlyView.A novel self‐adhesive hydrogel matrix is engineered to embed a fiber Bragg grating sensor for real‐time monitoring of physiological strain signals. The developed system conforms to the skin without external supports and, thanks to the fiber–matrix mechanical coupling, captures both subtle and large‐scale deformations.
Ilaria Condò +4 more
wiley +1 more source
High temperature sensing with fiber Bragg gratings in sapphire-derived all-glass optical fibers.
Optics Express, 2014 A structured sapphire-derived all-glass optical fiber with an aluminum content in the core of up to 50 mol% was used for fiber Bragg grating inscription. The fiber provided a parabolic refractive index profile.
T. Elsmann +10 more
semanticscholar +1 more source
Photothermal effects in fiber Bragg gratings
Applied Optics, 2006 Writing a fiber Bragg grating in optical fiber generates an intrinsic broadband absorption term that can result in photothermal heating during subsequent use with fiber core guided light. This, in turn, can cause a significant shift of a grating resonance via the thermo-optic coefficient, even at low in-fiber light powers.
Littler, I, Grujic, T, Eggleton, B
openaire +3 more sources
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.A multifunctional SnSe2@MXene heterostructure coated on a separator serves as a catalytic interlayer in Li‐S batteries. This design synergistically integrates the strong polysulfide adsorption and catalytic activity of SnSe2 with the high electrical conductivity of the MXene matrix, effectively suppressing the shuttle effect and enabling long‐term ...
Amirhossein Mirtaleb +2 more
wiley +1 more source