Results 41 to 50 of about 16,909 (260)

Electrically Tunable Graphene-Metal Hybrid Metasurfaces for High-Efficiency, Broadband Mid-Infrared Transmission Modulation. [PDF]

open access: yesAdv Sci (Weinh)
A graphene‐metal hybrid transmissive metasurface enables electrically tunable mid‐infrared transmission modulation through ionic gel top gating. By combining graphene with a metallic slit metasurface, high modulation efficiency and broadband operation are achieved simultaneously, demonstrating efficient electrical control of mid‐infrared transmission ...
Ha H, Kong J, Kim J, Kang J, Jang MS.
europepmc   +2 more sources

Advances in Sustainable and Wearable Textile Based Soft Robotics

open access: yesAdvanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas   +6 more
wiley   +1 more source

A Low-Cost High-Temperature Sensor Based on Long-Period Fiber/Microfiber Gratings by Local Fictive Temperature Modification

open access: yesJournal of Chemistry, 2020
A high temperature-sensitive long-period fiber grating (LPFG) sensor fabricated by the local fictive temperature modification is proposed and demonstrated.
Guorui Zhou   +11 more
doaj   +1 more source

An Axial Force Sensor Based on a Long-Period Fiber Grating with Dual-Peak Resonance

open access: yesPhotonics, 2023
A high-sensitivity axial force sensor with a large measurement range based on a dual-peak long-period fiber grating (LPFG) is proposed and experimentally demonstrated.
Weixuan Luo   +5 more
doaj   +1 more source

Nested long period grating interferometers [PDF]

open access: yesSPIE Proceedings, 2007
The concept of nested fibre optic long period grating (LPG) based interferometers is introduced. A number of in-series, identical LPGs may be used to form a set of nested, multiplexed Mach-Zehnder interferometers that may demodulated and demultiplexed by virtue of a Fourier analysis of the optical spectrum.
Murphy, Richard P.   +2 more
openaire   +2 more sources

Nano Borophene as a Programmable 2D Scaffold for Organized DNA Assembly and Long‐Range Energy Transfer

open access: yesAdvanced Functional Materials, EarlyView.
Borophene is introduced as a programmable 2D bio‐interface that organizes DNA through dual boron–sulfur and nucleobase interactions. This molecular architecture enables efficient long‐range nanosurface energy transfer, establishing new design principles for functional nano–bio interfaces and amplification‐free optical biosensing.
Teresa Aditya   +11 more
wiley   +1 more source

Biosensing with optical fiber gratings

open access: yesNanophotonics, 2017
Optical fiber gratings (OFGs), especially long-period gratings (LPGs) and etched or tilted fiber Bragg gratings (FBGs), are playing an increasing role in the chemical and biochemical sensing based on the measurement of a surface refractive index (RI ...
Chiavaioli Francesco   +4 more
doaj   +1 more source

Refractive Index Sensing by Using Mechanically Induced Long-Period Grating

open access: yesIEEE Photonics Journal, 2012
In this paper, a refractive index sensor using a mechanically induced long-period grating is proposed and experimentally demonstrated. The sensing element is based on a composite optical waveguide, which is made of a single-mode fiber, a Teflon-cannula ...
Xiaojun Zhou   +3 more
doaj   +1 more source

A New Strategy for Creating Quantum Light Emitters Via Post‐Growth Hydrogen‐Ion Irradiation of III‐V Nanowires

open access: yesAdvanced Functional Materials, EarlyView.
A post‐growth method is demonstrated to realize energy‐tunable quantum emitters in GaAs/GaAsN/GaAs core–multishell nanowires on a Si substrate. By combining the N‐induced bandgap reduction with H‐ion irradiation, the GaAsN potential landscape is engineered, enabling isolated, narrow emission lines that function as single‐photon sources with g(2)(0) ∼ 0.
Akant Sagar Sharma   +10 more
wiley   +1 more source

Transverse Load and Temperature Sensing Using Multiplexed Long-Period Fiber Gratings

open access: yesPhotonics, 2020
The simultaneous measurement of transverse load and temperature using two long-period fiber gratings multiplexed in the wavelength domain is presented experimentally.
Ismael Torres-Gómez   +4 more
doaj   +1 more source

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