Results 51 to 60 of about 15,815 (311)

Reflectivity of three-dimensional GaAs photonic band-gap crystals of finite thickness [PDF]

, 2020
We study the optical reflectivity of real three-dimensional (3D) photonic band-gap crystals with increasing thickness. The crystals consist of GaAs plates with nanorod arrays that are assembled by an advanced stacking method into high-quality 3D woodpile
Satoshi Iwamoto (1686148), Willem L. Vos (3056646), Takeyoshi Tajiri (6249668), Yasuhiko Arakawa (251674), Iwamoto, Satoshi, Takahashi, Shun, Cornelis A. M. Harteveld (8119229), Shun Takahashi (345084), Arakawa, Yasuhiko, Vos, Willem L., Tajiri, Takeyoshi, Harteveld, Cornelis A.M.   +11 more
core   +1 more source

X-band photonic band-gap accelerator structure breakdown experiment

Physical Review Special Topics. Accelerators and Beams, 2011
In order to understand the performance of photonic band-gap (PBG) structures under realistic high gradient, high power, high repetition rate operation, a PBG accelerator structure was designed and tested at X band (11.424 GHz). The structure consisted of
Roark A. Marsh, Michael A. Shapiro, Richard J. Temkin, Valery A. Dolgashev, Lisa L. Laurent, James R. Lewandowski, A. Dian Yeremian, Sami G. Tantawi   +7 more
doaj   +1 more source

Strain‐Programmable Luminescent Adhesive Patch With Tartrazine‐Mediated Optical Skin Clearing for Photochemical Tissue Bonding

Advanced Functional Materials, EarlyView.
We propose a suture‐complementary approach that integrates optical skin clearing with a strain‐programmable luminescent adhesive patch. Hyaluronic acid promotes transdermal delivery of tartrazine to improve optical clearing and stabilizes its interaction with a photosensitizer. Optical clearing increases the penetration depth of visible light into skin,
Seong‐Jong Kim, Kyungjoo Jo, Kwanghyeon Park, Jun Hee Kim, Jong Hyeong Cho, Inhoo Choi, Sei Kwang Hahn   +6 more
wiley   +1 more source

Photon Confinement in Photonic Crystal Cavities [PDF]

, 2010
In this thesis, the use of photonic crystal cavities for experiments in cavity quantum-electrodynamics is described. To this end, the propagation of light in photonic crystals, and the creation of cavities by making defects in the photonic crystal ...
Khankhoje, Uday Kiran
core   +1 more source

Speckle‐Engineered Upconversion Amplification in Nanoemulsion‐Templated Hydrogel Microdomes

Advanced Functional Materials, EarlyView.
Nanoemulsion‐confined PEGDA microdomes generate speckle‐like excitation fields that strongly amplify upconversion luminescence upon dehydration, enabling filter‐free visible readout with reversible on–off switching. DMD‐based lithography yields scalable, shape‐programmable arrays for moisture‐responsive displays and optical encryption.
Chaeyeong Ryu, Byungcheon Yoo, Seunghun Lee, Hyungyo Jeong, Sanggyun Jeong, Heesu Cho, Jongwon Oh, Dahye Baek, Jongkyu Kim, Yubin Lee, Eunsu Gu, Dong‐Hwan Kim, Jung‐Hoon Park, Jiseok Lee   +13 more
wiley   +1 more source

Signature of a three-dimensional photonic band gap observed on silicon inverse woodpile photonic crystals [PDF]

, 2011
We have studied the reflectivity of CMOS-compatible three-dimensional silicon inverse woodpile photonic crystals at near-infrared frequencies. Polarization-resolved reflectivity spectra were obtained from two orthogonal crystal surfaces using an ...
Nair, Rajesh V., Allard P. Mosk, Leistikow, Merel D., Mosk, Allard P., Woldering, Léon A., Huisman, Simon R., Léon A. Woldering, Willem L. Vos, Simon R. Huisman, Rajesh V. Nair, Vos, Willem L., Merel D. Leistikow   +11 more
core   +1 more source

Comprehensive Study of Bulk Thickness and Bending Loss in All-Silicon Terahertz Valley Photonic Crystal Waveguides

Photonics
The investigation of topological structures and phases in photonics has created unprecedented opportunities for developing advanced on-chip terahertz waveguide devices.
Zeyu Zhao, Hao-Zhe Wang, Hang Ren, Su Xu
doaj   +1 more source

Lithographic band gap tuning in photonic band gap crystals

Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena, 1996
We describe the lithographic control over the spectral response of three-dimensional photonic crystals. By precise microfabrication of the geometry using a reproducible and reliable procedure consisting of electron beam lithography followed by dry etching, we have shifted the conduction band of crystals within the near-infrared.
Cheng, C. C., Scherer, A., Arbet-Engels, V., Yablonovitch, E.   +3 more
openaire   +2 more sources

Interfacial Modulation for High‐Efficiency Large‐Area Organic Photovoltaics and Perovskite‐Organic Tandem Solar Modules

Advanced Functional Materials, EarlyView.
Self‐assembled monolayers (SAMs) are promising hole‐transporting materials for organic photovoltaics (OPVs), but suffer from self‐aggregation and poor large‐area uniformity. We find that interfacial modification using nicotinic hydrazide can eliminate the residual SAM aggregates by forming energetically favorable complexes, yielding uniform SAM.
Seongwon Yoon, Kangsik Cho, Sungmin Park, Kyeongmin Kim, Hyungju Ahn, Junhyeong Kim, Ahyeon Jin, Uijoon Lee, Yoon Hee Jang, Yongseok Jun, Hae Jung Son   +10 more
wiley   +1 more source

Transmission spectrum optimization of superconducting photonic crystals based on the moving asymptotic method

Next Materials
Superconducting photonic crystals have emerged as a promising platform for advanced photonic devices, however the precise control of their photonic band gaps remains a fundamental challenge. This study proposes an efficient topology optimization approach
Lihong Han, Shuping Song, Xiaoning Guan, Shuzhen Lu, Pengfei Lu   +4 more
doaj   +1 more source