Results 31 to 40 of about 2,235 (169)

Large Bidirectional Refractive Index Change in Silicon‐rich Nitride via Visible Light Trimming

Advanced Optical Materials, EarlyView.
Continuous‐wave visible light trimming of PECVD silicon‐rich nitride micro‐ring resonators enables precise, large bidirectional refractive index tuning. Resonance shifts as fine as 10 pm are achieved with a cost‐effective setup, demonstrating large red shifts of 49.1 nm and blue shifts of 10.6 nm.
Dmitrii Belogolovskii, Md Masudur Rahman, Karl Johnson, Vladimir Fedorov, Andrew Grieco, Nikola Alic, Abdoulaye Ndao, Paul K. L. Yu, Yeshaiahu Fainman   +8 more
wiley   +1 more source

A Modular Low‐Cost 3D Uniformly Illuminated Mini‐Photoreactor with Versatile In‐Situ Analysis

Advanced Optical Materials, EarlyView.
A “green” Do‐It‐Yourself (DIY)‐realizable mini‐photoreactor made from cheap commercially available parts delivers unprecedented 3D uniform illumination with minimal wastage of photons, and additionally permits in situ much‐demanded analytical tools (absorption, fluorescence, and NMR spectroscopy).
Yuriy Shpinov, Ian Coghill, Mrinal Mandal, Philippe Pelupessy, Isabelle Aujard, Thomas Le Saux, Ludovic Jullien   +6 more
wiley   +1 more source

Demonstration of a Graphene Adjustable‐Barriers Phototransistor with Tunable Ultra‐High Responsivity

Advanced Optical Materials, EarlyView.
A novel graphene‐based phototransistor with a tunable ultra‐high responsivity of 1.7 x 107 AW−1 has been demonstrated. Due to the selected material combination of amorphous silicon, graphene and n‐germanium, the device is potentially capable of dual‐band detection in the VIS‐IR range.
Carsten Strobel, Carlos A. Chavarin, Martin Knaut, Christian Wenger, André Heinzig, Thomas Mikolajick   +5 more
wiley   +1 more source

Optical Wireless Communications with Metasurfaces: Current Status and Potential for Intelligent Communications

Advanced Photonics Research, EarlyView.
Optical wireless communications (OWCs) provide a promising alternative to spectrum‐congested microwave wireless communications. Recently, the use of metasurfaces with sub‐wavelength features for dynamic beam steering, beam manipulation, and spatial or optical‐angular‐momentum mode generation, conversion, and multiplexing in OWCs is proposed and ...
Ke Wang, Chengwei Fang, Md Osman Ali, Xiaojun Chen, Safa Alghadi, Shuo Li, Jiayuan He, Sithamparanathan Kandeepan   +7 more
wiley   +1 more source

Stacked Nanosheet Gate‐All‐Around Morphotropic Phase Boundary Field‐Effect Transistors

Advanced Science, EarlyView.
This study proposes a material design using ferroelectric‐antiferroelectric mixed‐phase HZO to achieve steep subthreshold swing and non‐hysteretic on‐current enhancement in morphotropic phase boundary field‐effect transistors (MPB‐FETs). For the first time, two‐stacked nanosheet GAA MPB‐FETs with optimized HZO are demonstrated, validating superior ...
Sihyun Kim, Hyun‐Min Kim, Ki‐Ryun Kwon, Daewoong Kwon   +3 more
wiley   +1 more source

Uncover Hidden Physical Information of Soft Matter by Observing Large Deformation

Advanced Science, EarlyView.
Detecting internal abnormalities in soft matter remains challenging due to its heterogeneous nature. This study introduces a method that infers hidden physical properties by matching observed deformation with simulation through parallel Bayesian optimization.
Huanyu Yang, Yitao Cheng, Penghui Zhao, Jiageng Cai, Zhaowei Yin, Shaomin Chen, Ge Guo, Chi Zhu, Ke Liu, Lingyun Zu   +9 more
wiley   +1 more source

Modulating Iron Crystals with Lattice Chalcophile‐Siderophile Elements for Selective Dechlorinations Over Hydrogen Evolution

Advanced Science, EarlyView.
Lattice engineering of nFe0 crystals with chalcophile‐siderophile elements optimizes the iron microenvironment, enhancing hydrophobicity, electron transfer, and selective dechlorination efficiency while reducing hydrogen evolution reaction (HER). The Cu─S─nFe0 material shows a 20‐fold increase in dechlorination rate, a 150‐fold decrease in HER, and ...
Xiaohong Hu, Qianhai Zhou, Du Chen, Zhongyuan Guo, Yiman Gao, Chaohuang Chen, Jie Hou, Vincent Noël, Daohui Lin, Lizhong Zhu, Jiang Xu   +10 more
wiley   +1 more source

Flexible Organic Field‐Effect Transistor (OFET) Based 2T0C DRAM Cells with 2‐Bit Operation and Extended Retention

Advanced Science, EarlyView.
A flexible 2T0C DRAM cells which consist of two high‐performance organic field‐effect transistors is reported, which exhibiting exceptional flexibility and multilevel storage characteristics. That device achieves a remarkable retention time exceeding 300 s, both in its initial state and under bending conditions, making it a promising candidate for ...
Xuemeng Hu, Zhenhai Li, Tianyang Feng, Jialin Meng, Qingxuan Li, Hao Zhu, Qingqing Sun, David Wei Zhang, Lin Chen   +8 more
wiley   +1 more source

Enhancement of Optical Transparency and Electrical Conductivity of IZO/Ag/IZO Multilayer Film by Intense Pulsed Light and its Effect on the Photovoltaic Performances of Perovskite Solar Cells

Advanced Science, EarlyView.
The highly conductive IZO/Ag/IZO multilayer transparent electrode is successfully fabricated through flashlight annealing (FLA) process. A transient thermal effect of FLA maintains the continuous Ag interlayer and improves the crystallinity of the sandwich IZO layers. This combination increases both electric conductivity and optical transmittance.
Sumin Bae, Youngsoo Jung, Vishal Pal, Jung‐Kun Lee   +3 more
wiley   +1 more source

Overcoming Extreme Ammonia Inhibition on Methanogenesis by Artificially Constructing a Synergistically Community with Acidogenic Bacteria and Hydrogenotrophic Archaea

Advanced Science, EarlyView.
This study proposes a two‐step biological strategy to synergistically enhance the three stages of anaerobic digestion, ultimately eliminating the extreme ammonia inhibition and breaking through the inefficiency bottleneck of conventional biotechnology.
Heng Wu, Huaiwen Zhang, Taili Dong, Zhenyu Li, Xiaohui Guo, Heyu Chen, Yiqing Yao   +6 more
wiley   +1 more source