Results 51 to 60 of about 8,222 (253)

Nanoengineered Binetworks in Multifunctional Anionic Block Polymer Mesoblends for Improved Mechanical Properties

Advanced Functional Materials, EarlyView.
Mesoblends consist of a nanostructured polymer into which a second polymer is imbibed with a selective solvent. In this work, a solvent‐templatable pentablock terpolymer possessing a sulfonated midblock is modified with a hydrophilic polymer that is photocrosslinked in situ, yielding a hierarchical binetwork.
Kacie M. Wells, Ivan Kuzmenko, Reza A. Ghiladi, Richard J. Spontak   +3 more
wiley   +1 more source

Laser–Material Interactions of High-Quality Ultrashort Pulsed Vector Vortex Beams

Micromachines, 2021
Diffractive multi-beams based on 1 × 5 and 2 × 2 binary Dammann gratings applied to a spatial light modulator (SLM) combined with a nanostructured S-wave plate have been used to generate uniform multiple cylindrical vector beams with radial and azimuthal
Yue Tang, Walter Perrie, David Rico Sierra, Qianliang Li, Dun Liu, Stuart P. Edwardson, Geoff Dearden   +6 more
doaj   +1 more source

Dynamic control of cylindrical vector beams via anisotropy

Optics Express, 2018
We demonstrate that the spatially diffractive properties of cylindrical vector beams could be controlled via linear interactions with anisotropic crystals. It is the first time to show experimentally that the diffraction of the vector beams can be either suppressed or enhanced significantly during propagation, depending on the sign of anisotropy ...
Chaoheng, Guo, Shenhe, Fu, Haolin, Lin, Zhen, Li, Hao, Yin, Zhenqiang, Chen   +5 more
openaire   +2 more sources

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

Near-field and high-resolution cylindrical noise source location method based on vector sound pressure array

Zhongguo Jianchuan Yanjiu, 2017
The existing underwater noise source near-field location method usually assumes that the measurement plane is flat, which increases the difficulty of applying the underwater noise target test for cylindrical distribution. Simultaneously, the conventional
ZUO Xiang, CHEN Huan
doaj   +1 more source

Generation of arbitrary cylindrical vector vortex beams with cross-polarized modulation

Results in Physics, 2020
Cylindrical vector vortex beams (CVVBs), possessing both spatially nonuniform phase and polarization distribution, have attracted research interests in many applications due to their unique optical properties.
Junmin Liu, Xueyu Chen, Yanliang He, Liming Lu, Huapeng Ye, Guangyue Chai, Shuqing Chen, Dianyuan Fan   +7 more
doaj   +1 more source

Measuring of Transverse Energy Flows in a Focus of an Aluminum Lens

Photonics, 2022
In this study, we theoretically and experimentally investigate the propagation of a second-order cylindrical vector beam through an aluminum lens which forms a tight focus at the distance of the wavelength. Simulation by the finite-difference time-domain
Elena Kozlova, Sergey Stafeev, Sergey Fomchenkov, Vladimir Podlipnov, Alexandra Savelyeva, Victor Kotlyar   +5 more
doaj   +1 more source

Cylindrical vector beam focusing through a dielectric interface

Optics Express, 2001
Cylindrical vector beams have been proposed and demonstrated for applications ranging from microscopy to high energy physics.In this paper,we analyze the three-dimensional field distributions of radial and azimuthal beams focused near a dielectric interface.We give particular attention to the classic problem of high numerical aperture focusing from an ...
D, Biss, T, Brown
openaire   +2 more sources

Blood Biomarkers and Surface‐Enhanced Raman Spectroscopy for Gout: A Comprehensive Review

Advanced Functional Materials, EarlyView.
Schematic illustrating gout disease progression from asymptomatic hyperuricemia to chronic tophaceous disease, highlighting the limitations of conventional imaging and biochemical diagnostics and the potential of engineered SERS platforms for ultrasensitive blood‐based detection of urate‐related biomarkers across disease stages, with the color gradient
Isuri Perera, Chiranjeevi Kanike, Appurva Tiwari, Hongyan Wu, Larry D. Unsworth, Ben Bin Xu, Xuehua Zhang   +6 more
wiley   +1 more source

Fully symmetric diffraction-interference beam shaper for radially polarized light on a 1530-nm wavelength [PDF]

Компьютерная оптика, 2019
A completely symmetrical scheme of a shaper of cylindrical vector beams is proposed in which two diffractive axicons and an interference polarizer placed in-between form a sandwich structure of the smallest possible thickness. The design and experimental
Vladimir Podlipnov, Sergei Karpeev, Vyacheslav Paranin   +2 more
doaj   +1 more source