Results 51 to 60 of about 7,051,583 (352)

3D Visible‐Light Invisibility Cloak

Advanced Science, 2018
The concept of an invisibility cloak is a fixture of science fiction, fantasy, and the collective imagination. However, a real device that can hide an object from sight in visible light from absolutely any viewpoint would be extremely challenging to ...
Bin Zheng, Rongrong Zhu, Liqiao Jing, Yihao Yang, Lian Shen, Huaping Wang, Zuojia Wang, Xianmin Zhang, Xu Liu, Erping Li, Hongsheng Chen   +10 more
doaj   +1 more source

Integrated avalanche photodetectors for visible light

Nature Communications, 2021
Integrated photodetectors are essential for scalable photonic platforms, yet most efforts are concerted on the developing devices operating at infrared telecommunication wavelengths.
Salih Yanikgonul, Victor Leong, Jun Rong Ong, Ting Hu, Shawn Yohanes Siew, Ching Eng Png, Leonid Krivitsky   +6 more
doaj   +1 more source

Information Theoretic Limits of Improved ACO-OFDM Receivers in Optical Intensity Channels With Time Dispersion

IEEE Open Journal of the Communications Society
From an information-theoretic perspective, we investigate performance of asymmetrically clipped optical OFDM (ACO-OFDM) in intensity modulated optical wireless systems.
Xiaozhen Liu, Jing Zhou, Wenyi Zhang
doaj   +1 more source

Experimental Comparison of PAM, CAP, and DMT Modulations in Phosphorescent White LED Transmission Link

IEEE Photonics Journal, 2015
In the paper, an experimental comparison of pulse amplitude, carrierless amplitude-phase, and discrete multitone modulations is carried in a visible light communications link employing white phosphorescent light-emitting diode (LED) as a transmitter.
G. Stepniak, L. Maksymiuk, J. Siuzdak
doaj   +1 more source

Visible Light Photocatalytic Degradation of Methylene Blue and Malachite Green Dyes with BaWO4-Go Nano Composite [PDF]

, 2017
A facile solid state metathesis synthesis of barium tungstate (BaWO4) followed by ball milling and subsequent preparation of barium tungstate-graphene oxide (BaWO4–GO) nano composite using a colloidal blending process and its application as a visible ...
Douglas, S. P. (S), Mahalakshmi, S. V. (S), Ravali, B. (B), Reddy, C. R. (Ch), Sekhar, R. S. (R), Sruthi, V. (V), Sunitha, M. (M)   +6 more
core   +1 more source

Effects of chronic browsing on life‐history traits of an irruptive large herbivore population

Population Ecology, EarlyView.
This study aimed to determine the relationship between diet quality, body mass, and size (hind foot length), and female reproduction and sought to identify the mechanism by which high density under severe food limitations is maintained. Our results demonstrated that sika deer introduced to Nakanoshima Island have maintained high densities through high ...
Koichi Kaji, Kazutaka M. Takeshita, Hiroshi Takahashi, Hiromasa Igota, Mayumi Ueno, Yukiko Matsuura, Takashi Ikeda, Ryo Yoshizawa, Hino Takafumi, Tsuyoshi Yoshida   +9 more
wiley   +1 more source

Off-Axis Co-Optical Path Large-Range Line Scanning Chromatic Confocal Sensor

Photonic Sensors
This article proposes a line scanning chromatic confocal sensor to solve the problem of limited chromatic confocal measurement due to the small measurement range and low measurement efficiency in the industrial inspection process.
Meizhong Liao, Yuqi Yang, Xiaolian Lu, Haiqi Li, Jun Zhang, Jinfeng Wang, Zhe Chen   +6 more
doaj   +1 more source

Quartz-enhanced photoacoustic spectroscopy employing pilot line manufactured custom tuning forks

Photoacoustics, 2020
Pilot line manufactured custom quartz tuning forks (QTFs) with a resonance frequency of 28 kHz and a Q value of >30, 000 in a vacuum and ∼ 7500 in the air, were designed and produced for trace gas sensing based on quartz enhanced photoacoustic ...
Huadan Zheng, Yihua Liu, Haoyang Lin, Bin Liu, Xiaohang Gu, Dongquan Li, Bincheng Huang, Yichao Wu, Linpeng Dong, Wenguo Zhu, Jieyuan Tang, Heyuan Guan, Huihui Lu, Yongchun Zhong, Junbin Fang, Yunhan Luo, Jun Zhang, Jianhui Yu, Zhe Chen, Frank K. Tittel   +19 more
doaj  

THz light amplification by an visible light laser in the presence of the plasma density gradient [PDF]

arXiv, 2020
A new mechanism for the THz light amplification is identified ina non-resonant Raman scattering between the THz light and a visible light lasers. The non-resonant scattering normally does not exchange the energy between E \&M fields, but the presence of the plasma density gradientcreates an condition in which a visible light laser could transfer its ...
arxiv  

A new technique for infrared scintillation measurements [PDF]

, 2016
We propose a new technique to measure the infrared scintillation light yield of rare earth (RE) doped crystals by comparing it to near UV-visible scintillation of a calibrated Pr:(Lu$_{0.75}$Y$_{0.25}$)$_{3}$Al$_5$O$_{12}$ sample. As an example, we apply
Borghesani, A. F., Braggio, C., Brylew, K., Carugno, G., Chiossi, F., Drozdowski, W., Guarise, M.   +6 more
core   +2 more sources