Results 61 to 70 of about 64,657 (295)

Air-core photonic band-gap fibers: the impact of surface modes

, 2004
We study the dispersion and leakage properties for the recently reported low-loss photonic band-gap fiber by Smith et al. [Nature 424, 657 (2003)]. We find that surface modes have a significant impact on both the dispersion and leakage properties of the ...
Koshiba, M., Mortensen, N. A., Saitoh, K.   +2 more
core   +1 more source

Biodegradable and Recyclable Luminescent Mixed‐Matrix‐Membranes, Hydrogels, and Cryogels based on Nanoscale Metal‐Organic Frameworks and Biopolymers

Advanced Functional Materials, EarlyView.
The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner, Julian Burkhart, Kateryna Borysova, Chiara Mazzariol, Klaus Müller‐Buschbaum   +4 more
wiley   +1 more source

Two-dimensional photonic band-gap mirrors at 850 and 980 nm [PDF]

, 1996
Summary form only given. Photonic band-gap (PBG) crystals can be fabricated in semiconductor devices through the etching of patterns of holes in the device, resulting in a periodic dielectric structure. One of the more practical uses of photonic crystals
Cheng, C. C., Lee, R., O'Brien, J., Painter, O., Scherer, A., Yariv, A.   +5 more
core  

Three-dimensional macroporous silicon photonic crystal with large photonic band gap [PDF]

, 2005
Three-dimensional photonic crystals based on macroporous silicon are fabricated by photoelectrochemical etching and subsequent focused-ion-beam drilling. Reflection measurements show a high reflection in the range of the stopgap and indicate the spectral
Gösele, U., Hillebrand, R., Scherer, A., Schilling, J., Stupian, G., White, J.   +5 more
core   +1 more source

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

Advanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger, Helmy Pacheco Hernandez, Yang Cui, Hongxing Hao, Vanessa Ramm, David C. Mayer, Khai‐Nghi Truong, Roland A. Fischer, Jürgen Hauer, Mariana Kozlowska, Alexander Pöthig   +10 more
wiley   +1 more source

Tunable Defect Mode in One-Dimensional Ternary Nanophotonic Crystal with Mirror Symmetry [PDF]

Journal of Optoelectronical Nanostructures, 2017
In this paper, the properties of the defect mode in the photonic band gap ofone-dimensional ternary photonic crystals containing high temperature superconductorlayer (SPCs) have been theoretically investigated.
Robabeh Talebzadeh, Mehrdad Bavaghar
doaj  

Edge states in self-complementary checkerboard photonic crystals: Zak phase, surface impedance and experimental verification

, 2017
Edge states of photonic crystals have attracted much attention for the potential applications such as high transmission waveguide bends, spin dependent splitters and one-way photonic circuits. Here, we theoretically discuss and experimentally observe the
Chen, Min, Chen, Xiao-Dong, Dong, Jian-Wen, Liu, Huan, Lu, Jin-Cheng, Shi, Fu-Long, Zhao, Ding, Zhu, Xiao-Sheng   +7 more
core   +1 more source

Demonstration of an All‐Optical AND Gate Mediated by Photochromic Molecules

Advanced Functional Materials, EarlyView.
A logic AND gate that runs on photons is demonstrated. It relies on two spatially separated photochromic molecules that work in tandem. Abstract The realization of a photonic logic AND gate, i.e. a logic AND gate that runs on photons rather than electrons, and where all steps are controlled by light, is demonstrated. In a proof‐of‐principle experiment,
Heyou Zhang, Max Gießübel, Pankaj Dharpure, Andrea Albert, Vira Niestierkina, Paul Mulvaney, Mukundan Thelakkat, Jürgen Köhler   +7 more
wiley   +1 more source

The Nested Topological Band-Gap Structure for the Periodic Domain Walls in a Photonic Super-Lattice

Crystals
We study the nested topological band-gap structure of one-dimensional (1D) photonic super-lattices. One cell of the super-lattice is composed of two kinds of photonic crystals (PhCs) with different topologies so that there is a domain wall (DW) state at ...
Zhen Lai, Yufu Liu, Yunlin Li, Xuezhi Wang, Xunya Jiang   +4 more
doaj   +1 more source

Unique Huygens-Fresnel electromagnetic transportation of chiral Dirac wavelet in topological photonic crystal

Nature Communications, 2023
Light propagates in various ways depending on environment, including uniform medium, surface/interface and photonic crystals, which appears ubiquitously in daily life and has been exploited for advanced optics technology.
Xing-Xiang Wang, Zhiwei Guo, Juan Song, Haitao Jiang, Hong Chen, Xiao Hu   +5 more
doaj   +1 more source