Results 61 to 70 of about 1,590 (234)

SRG Inscription in Supramolecular Liquid Crystalline Polymer Film: Replacement of Mesogens

Crystals, 2017
The photoinduced surface relief formation via mass transfer upon irradiation with patterned light has long been a subject of extensive investigation.
Shun Mitsui, Shusaku Nagano, Mitsuo Hara, Takahiro Seki   +3 more
doaj   +1 more source

Photoinduction of spontaneous surface relief gratings on Azo DR1 glass [PDF]

Optics Letters, 2016
Surface relief gratings were spontaneously photoinduced from a collimated Nd:YAG laser beam at 532 nm on thin films of a disperse red 1 functionalized glass-forming compound. Pattern formation was studied by measuring the diffraction intensity of a He-Ne laser probe beam at 633 nm and by atomic force microscopy (AFM).
Leila, Mazaheri, Sanyasi Rao, Bobbara, Olivier, Lebel, Jean-Michel, Nunzi   +3 more
openaire   +2 more sources

Investigation on tunnel stability considering pipe‐roof support with transparent soil technology

Deep Underground Science and Engineering, EarlyView.
This study integrates transparent soil technology, 3D reconstruction and numerical simulation to captures the full‐field deformation of shield tunnel instability. Results demonstrate that pipe‐roof support enhances stability via the “soil‐arching barrier effect,” effectively restraining failure wedge development by extending stress transfer paths ...
Zhi Jia, Yunpeng Ji, Zhao Lu, Honghua Zhao, Limin Zhang   +4 more
wiley   +1 more source

Exponentially‐constrained Gaussian mixture model for quantifying vertical development of water‐conducting fracture zones in lithologically stratified mining roofs

Deep Underground Science and Engineering, EarlyView.
This study proposes an exponentially‐constrained Gaussian mixture model (EcGMM) to quantify vertical fracture heterogeneity in stratified roof strata. The model integrates a piecewise exponential decay term capturing global stress dissipation with Gaussian components representing localized fracture intensification at lithological interfaces.
Huiqing Yuan, Zhimin Xu, Weixiao Chen, Chenghang Zhang, Shijie Xiong, Yajun Sun   +5 more
wiley   +1 more source

Global threats, local opportunities: ice‐related landforms provide refugia for high‐elevation plants and arthropods

Ecography, EarlyView.
Ice‐related landforms in mountain areas have been hypothesized to play a key role in the survival of cold‐adapted species threatened by climate change. However, our understanding of such landforms acting as refugia remains speculative. Here we analyse occurrence data, collected through a standardized sampling at 471 sampling points across the European ...
Mauro Gobbi, Barbara Valle, Mattia Brambilla, Duccio Tampucci, Marco Caccianiga   +4 more
wiley   +1 more source

Photomechanical Sensing from Spectral Shifts in Graphene-Doped Polydimethylsiloxane Reflection Gratings

Optics
Polydimethylsiloxane (PDMS) films doped with graphene nanoplatelets (GNP) with an embossed surface-relief grating were investigated as photothermal actuated sensors.
Abigail Deaton, Hengzhou Liu, Nathan J. Dawson   +2 more
doaj   +1 more source

Comparison measurements for hybrid evaluation approaches in optical nanometrology [PDF]

EPJ Web of Conferences
In the pursuit of closing the gap between nanometrology and nanofabrication, we investigate the use of advanced optical far field methods for sub-wavelength parameter reconstruction.
Käseberg Tim, Bodermann Bernd, Sturm Matthias, Wurm Matthias, Siefke Thomas, Siaudinyté Lauryna, Tranum Rømer Astrid, Hansen Poul-Erik   +7 more
doaj   +1 more source

Aftasten/Tantear: A sensorial, coalitional wayfinding among Muslim runners

Feminist Anthropology, EarlyView.
Abstract Muslim recreational runners in Muslim‐minority settings that take up running as their preferred form of leisure indicate that they feel they have to navigate a sense of exclusion when running outdoors. This article explores the process of exploration and sensing in public, represented by the Dutch verb aftasten, to investigate the way Muslim ...
Jasmijn Rana
wiley   +1 more source

Dynamic control of polarization and diffraction in tunable Surface-Relief Liquid-Crystal gratings

Results in Physics
The precise phase control of light is essential for advancing photonic devices. This study presents electrically tunable liquid–crystal (LC) surface-relief gratings (SRGs) comprising periodic SU-8 photoresist (PR) structures, showcasing notable electro ...
Pravinraj Selvaraj, Chih-Wei Lin, Yi-Xuan Liu, Chi-Tang Huang, Jie-Sin Jhong, Ching-Cherng Sun, Ko-Ting Cheng   +6 more
doaj   +1 more source

Fluorene‐based blue emitters: On the path to electrically pumped organic lasers

FlexMat, EarlyView.
Electrically pumped efficient operation remains unrealized, a major challenge in optoelectronics. Fluorene‐based blue‐emitting semiconductors are promising gain media, thanks to their structural tunability and favorable emission properties. This review summarizes recent advances, highlights their reliability and versatility in lasing, and outlines key ...
Yong Yan, Hao Li, Mengna Yu, Huiyin Wang, Jiangqiang He, Menghan Wu, Quanyou Feng, Linghai Xie   +7 more
wiley   +1 more source