Results 41 to 50 of about 26,548 (312)

Invisible Polymer Walls Enhance Reorientational Optical Nonlinearity in Oligothiophene‐Doped Liquid Crystals

Advanced Functional Materials, EarlyView.
The polymer wall stabilized dye‐doped liquid crystals (PWLCs) enhance the sensitivity of photoinduced molecular reorientation in dye‐doped LC systems. The PWLC with an invisible polymer wall successfully reduces the threshold intensity and functions as an optical limiter under the incidence of low intensity light laser source.
Junki Yokota, Yuya Nakata, Erika Katayama, Miho Aizawa, Kyohei Hisano, Shoichi Kubo, Atsushi Shishido   +6 more
wiley   +1 more source

Design of Wideband Waveguide-to-Microstrip Transition for 60 GHz Frequency Band

Известия высших учебных заведений России: Радиоэлектроника, 2019
Introduction. The frequency band around 60 GHz is one of the most promising to realize new generation communication systems with high data rate due to the utilization of a wide operational frequency band that significantly exceeds traditional frequency ...
Andrei V. Mozharovskiy, Aleksey A. Artemenko, Roman O. Maslennikov, Irina B. Vendik   +3 more
doaj   +1 more source

Partial Parabolic Single Layer Crossing for Silicon-on-Insulator Nanophotonic Waveguides

IEEE Photonics Journal, 2022
Under the dimension of 6 µm overall length, a 220 nm partial parabolic taper fabricated on silicon-on-insulator (SOI) wafer with 2 µm buried oxide at 1.55 µm, to simply fabrication processes and reduce cost, we design a Partial ...
Yuan-Ting Shih, Kuo-Fang Chung, Ding-Wei Huang   +2 more
doaj   +1 more source

Oxidized MoS2‐Based Multifunctional Memristive Hardware for Energy‐Efficient mmWave Signal Processing and In‐Memory Matrix Multiplication

Advanced Functional Materials, EarlyView.
Thermally oxidized MoS2‐based radio‐frequency switches enable a multifunctional platform that unifies broadband RF switching and in‐memory computation. The device achieves a cutoff frequency of 33.2 THz with high energy efficiency and supports hardware‐aware signal processing.
Juho Son, Changwoo Pyo, Sungmoon Park, Yoongi Cho, Seungchan Lee, Myungsoo Kim   +5 more
wiley   +1 more source

Retiming of short pulses using quadratic cascading in a periodically poled lithium niobate waveguide

, 2011
We demonstrate an all-optical technique for the mitigation of timing jitter in short pulse transmission systems. The technique relies on pulse preshaping followed by optical switching in a periodically poled lithium niobate waveguide via cascaded second ...
David J. Richardson, Gallo, K., Liu, Sheng, Petropoulos, P., Richardson, D.J., Kwang Jo Lee, Richardson, David J., Liu, S., Sheng Liu, Francesca Parmigiani, Lee, Kwang Jo, Parmigiani, Francesca, Gallo, Katia,, Periklis Petropoulos, Katia Gallo, Petropoulos, Periklis, Parmigiani, F., Lee, K.J.   +17 more
core   +1 more source

Indium tin oxide overlayered waveguides for sensor applications [PDF]

, 1997
The use of indium tin oxide (ITO) thin films as electrodes for integrated optical electrochemical sensor devices is discussed. The effect of various thicknesses of ITO overlayers exhibiting low resistivity and high transparency on potassium ion-exchanged
Wilkinson, James S., LUFF J. B., Perrone, Guido, Wilkinson, J.S., Luff, B.Jonathan, WILKINSON J. S., Luff, J.B.   +6 more
core   +1 more source

Twin Crystal Moiré Metasurfaces for Crossing Flat‐Band Transport

Advanced Functional Materials, EarlyView.
This study introduces twin crystal moiré metasurfaces, breaking in‐plane symmetry to enable reconfigurable acoustic wave manipulation. By adjusting the twin angle and interlayer twist angle, various combinations of hyperbolic, flat bands, and elliptic states can be synthesized in the system.
Shida Fan, Chenglin Han, Kuan He, Chadi Ellouzi, Yunlong Wang, Li‐Qun Chen, Jie Sun, Zhaodong Xu, Chen Shen, Tianzhi Yang   +9 more
wiley   +1 more source

Multimode interference devices for focusing in microfluidic channels [PDF]

, 2011
Low-cost, compact, automated optical microsystems for chemical analysis, such as microflow cytometers for identification of individual biological cells, require monolithically integrated microlenses for focusing in microfluidic channels, to enable high ...
Wilkinson, James S., James S. Wilkinson, Hunt, Hamish C., Hamish C. Hunt   +3 more
core   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

Advanced 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, Marzia Dulal, Sophia K. Novoselov, Victoria K. Novoselov, Kostya S. Novoselov, Shaila Afroj, Nazmul Karim   +6 more
wiley   +1 more source

Low‐Profile, High‐Gain GRIN RF Lenses via Multi‐Material Vat Photopolymerization

Advanced Functional Materials, EarlyView.
We investigate the opportunity of leveraging multi‐material vat photopolymerization printing to manufacture intricate lenses exhibiting permittivity gradients that can increase signal gain in transmitted radiofrequency signals in the X‐ and Ku‐bands. Lenses produced with more distinct low‐loss materials (up to 5) can deliver an 18 dB signal gain with a
Lawrence Romangsuriat, Alexander Peraire‐Bueno, A. John Hart, Randall M. Erb   +3 more
wiley   +1 more source