Results 71 to 80 of about 13,797 (255)

A proposal of a perfect graphene absorber with enhanced design and fabrication tolerance

Scientific Reports, 2017
We propose a novel device structure for the perfect absorption of a one-sided lightwavve illumination, which consists of a high-contrast grating (HCG) and an evanescently coupled slab with an absorbing medium (graphene).
Sangjun Lee, Thang Q. Tran, Hyungjun Heo, Myunghwan Kim, Sangin Kim   +4 more
doaj   +1 more source

Rigorous coupled-wave analysis of electromagnetic scattering from lamellar grating with defects

Optics Express, 2011
This paper proposes a spectral-domain approach to the electromagnetic scattering problem of lamellar grating with defects. The fields in imperfectly periodic structures have continuous spectra in the wavenumber space, and the main problem of the spectral-domain approach is connected to the discretization scheme on the wavenumber.
Watanabe, Koki, Pištora, Jaromír, Nakatake, Yoshimasa   +2 more
openaire   +3 more sources

Advances in Solution‐Processed Textile Triboelectric Nanogenerators: Ink Formation, Processing Strategies, Applications, and Challenges

Advanced Functional Materials, EarlyView.
Advanced ink systems for solution‐processed textile triboelectric nanogenerators are systematically summarized, spanning conductive, tribo‐negative, and tribo‐positive layers. By connecting ink chemistry, deposition methods, and device function, the present review reveals the key governing principles of solution development and highlights practical ...
Xinlong Sun, Stephen Beeby
wiley   +1 more source

A broadband multilayered nonpolarization resonant reflector

IEEE Photonics Journal, 2015
A nonpolarization reflector constructed by a multilayered 1-D grating structure with a multisubpart profile is proposed and fabricated. Rigorous coupled-wave analysis for multilayered grating structure is adopted to theoretically investigate the ...
L. Huang, D. Liang, J. Zeng, Y. Xiao, H. Wu   +4 more
doaj   +1 more source

Modeling full PCSELs and VCSELs using modified rigorous coupled-wave analysis [PDF]

Optics Express
An integrated rigorous coupled-wave analysis (RCWA) algorithm is presented in this paper, which can simulate full vertical-cavity surface-emitting laser (VCSEL) and photonic crystal surface-emitting laser (PCSEL) structures. A classic RCWA can only analyze a structure when the light source is incident from the top, bottom, or both sides of the device ...
Jingxiao Xu, Douglas McCulloch, Martin D. B. Charlton   +2 more
openaire   +3 more sources

Oligoethylene Glycol Side‐Chain Engineering of Y6‐Derived Nonfullerene Acceptors for Thermally Induced Spontaneous Pseudo‐Planar Heterojunction Organic Photodetectors

Advanced Functional Materials, EarlyView.
OEG‐functionalized Y6‐derived acceptors induce thermally driven vertical phase separation, enabling pseudo‐planar heterojunction organic photodetectors. The resulting PM6:YTEG‐4F and PM6:YTEG‐4Cl organic photodetectors suppress dark current density by approximately 260‐fold and 210‐fold, respectively, while maintaining efficient photoresponse ...
Se Jeong Park, Sang Young Jeong, Yunji Eom, Yelim Kang, Yeonsu Choi, Seunghyun Rhee, Bo Ram Lee, Bong Joo Kang, Nam Joong Jeon, Jae Won Shim, Han Young Woo, Seo‐Jin Ko   +11 more
wiley   +1 more source

Desert Plant Inspired Hierarchical Nanofibrous Membranes for Integrated Solar Desalination and Heavy Metal Remediation

Advanced Functional Materials, EarlyView.
An Alhagi maurorum inspired hierarchical composite membrane (NFCu) was developed by integrating heavy metal remediation and solar‐driven interfacial evaporation in a single platform. Beyond the photothermal effect, a localized photocatalytic process is realized on the CuO surface, deepening the mechanistic understanding of light–matter–water ...
Yuqiong He, Ronggang Luo, Shengbo Ge, Kaixin Jiang, Kirsten Dyer, Xiaojian Zhou, Ben Bin Xu, Xuehua Zhang, Guanben Du, Kaimeng Xu   +9 more
wiley   +1 more source

Charge‐Polarized Ni─S4 Single‐Atom Sites Drive Selective Photoreforming of Poly(lactic acid) to Lactate and Hydrogen

Advanced Functional Materials, EarlyView.
Atomically dispersed Ni–S4 sites on CdS nanorods induce interfacial charge polarization, directing photogenerated electrons to H2 evolution and holes to selective ester‐bond cleavage of poly(lactic acid). Without sacrificial reagents, this charge‐coupled system produces lactate while suppressing overoxidation, achieving an H2 evolution rate of 41.74 ...
Yu Yao, Panpan Zhang, Jinqiang Zhang, Xi‐lin Wu, Tara Pukala, Yifei Wang, Bernt Johannessen, Shaobin Wang, Xiaoguang Duan   +8 more
wiley   +1 more source

Accurate Structural Parameter Retrieval for One-Dimensional Nanogratings in Mueller-Matrix Spectroscopic Ellipsometry Using an Element-Adaptive Hybrid Surrogate Model

Applied Sciences
Mueller-matrix spectroscopic ellipsometry (MMSE) enables accurate characterization of nanostructures; however, structural-parameter retrieval remains challenging because of the high computational cost of rigorous coupled-wave analysis (RCWA), element ...
Seri Kim, Leeju Hwang, Nagyeong Kim, Hyungbin Lee, Kibaek Kim, Young-Joo Kim   +5 more
doaj   +1 more source

Directional spectral emissivity characterization and modeling of laser-patterned steel surfaces [PDF]

EPJ Web of Conferences
We present preliminary results on the fabrication of patterned surfaces by Direct Laser Interference Patterning and the characterization and theoretical interpretation of their infrared emissivities.
Gabirondo-López Jon, González de Arrieta Iñigo, Soldera Marcos, Lasagni Andrés F., Arredondo Iñigo, Igartua Josu M., López Gabriel A.   +6 more
doaj   +1 more source