Results 81 to 90 of about 43,172 (307)

Numerical Verification of a Polarization-Insensitive Electrically Tunable Far Infrared Band-Stop Meta-Surface Filter

Photonics
Tunable filters have many potential applications in diverse fields, including high-capacity communications, dynamic beam shaping and spectral imaging. Although providing a high-performance solution for actively tunable devices, metasurface combined with ...
Zheng Li, Yuying Lu, Yichi Han, Hanjie Li, Zhenqi Niu, Xiaomin Liu, Chaoyang Wei, Jianda Shao   +7 more
doaj   +1 more source

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

Thermally tunable optical filter with crystalline silicon as cavity [PDF]

, 2005
A novel method to fabricate a thermally tunable filter with a tuning range of 26 nm from 1.504 to 1.530 mum is reported. The high-reffectivity bottom mirror is deposited in the hole formed by anisotropically etching in the basic solution from the ...
Cheng BW, Shi WH, Zhao L, Mao RW, Wang QM, Luo LP, Zuo YH, Li CB, Li, CB, Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, POB 912, Beijing 100083, Peoples R China. 电子邮箱地址: cbli@mail.semi.ac.cn, Yu JZ   +9 more
core  

Optofluidically Tunable MMI Filter [PDF]

, 2009
An optofluidically tunable multimode interference (MMI) bandpass filter is demonstrated. This scheme allows for a tuning range of almost 40 nm, by simple changing the liquid refractive index around the multimode fiber of the filter.
Sanchez-Mondragon, J. J., J. E. Antonio-Lopez, J. G. Aguilar-Soto, Antonio-Lopez, J. E., D. A. May-Arrioja, P. LiKamWa, J. J. Sanchez-Mondragon, Li Kam Wa, P., May-Arrioja, D. A., LiKamWa, P., Aguilar-Soto, J. G.   +10 more
core   +1 more source

Effect of Sectional Polymerization Process on Tunable Twist Structure Liquid Crystal Filters

Crystals, 2019
The effect of sectional polymerization process on tunable filters with cholesteric liquid crystal (CLC) and blue phase liquid crystal (BPLC) is demonstrated.
Changli Sun, Jiangang Lu
doaj   +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

Fabrication of 1.3 mu m Si-based MEMS tunable optical filter [PDF]

, 2002
In this paper we report the fabrication of 1.3 mum Si-based MEMS tunable optical filter, by surface micromaching. Through wet etching of polyimide sacrificial layer, a tunable Fabry-Perot filter was successfully fabricated.
Cheng BW, Bai YX, Mao RW, Wang LC, Gao JH, Wang QM, Zuo YH Chinese Acad Sci Inst Semicond State Key Lab Integrated Optoelect Beijing 100083 Peoples R China., Luo LP, Huang CJ, Zuo YH, Yu JZ   +10 more
core  

All-Pass Filter Based Linear Voltage Controlled Quadrature Oscillator

Active and Passive Electronic Components, 2017
A linear voltage controlled quadrature oscillator implemented from a first-order electronically tunable all-pass filter (ETAF) is presented. The active element is commercially available current feedback amplifier (AD844) in conjunction with the ...
Koushick Mathur, Palaniandavar Venkateswaran, Rabindranath Nandi   +2 more
doaj   +1 more source

Tunable plasmonic filter and variable optical attenuator based on ring metal–insulator–metal waveguide

The Journal of Engineering, 2013
A tunable nanoscale plasmonic filter and variable optical attenuator structure based on a rectangular ring metal–insulator–metal waveguide cavity containing electro-optic (EO) material is proposed and numerically demonstrated by using the finite ...
Jianping Guo, Jiahu Zhu, Wen Zhou
doaj   +1 more source

Design of a Microstrip Three-State Switchable and Fully Tunable Bandpass Filter With an Extra-Wide Frequency Tuning Range

IEEE Access, 2020
In this study, a new method and structure are proposed to design of a switchable and fully tunable microstrip bandpass filter (BPF). The central frequency and bandwidth (or the resonance frequency of the resonators, coupling coefficient between ...
Chi-Feng Chen
doaj   +1 more source