Results 81 to 90 of about 7,684 (263)
Customized Chirality of an Optical Vortex Pair: Helical Dichroism and Enantioselective Force
PhotonicsTailoring the chirality of an optical vortex is crucial for advancing helical chiroptical spectroscopy techniques in various scenarios and attracts great attention.
Xingxing Han +4 more
doaj +1 more source
Vortex Beam Encoded All-Optical Logic Gates Based on Nano-Ring Plasmonic Antennas
Nanomaterials, 2019 Vortex beam encoded all-optical logic gates are suggested to be very important in future information processing. However, within current logic devices, only a few are encoded by using vortex beams and, in these devices, some space optical elements with ...
Houquan Liu +5 more
doaj +1 more source
Combined EISCAT radar and optical multispectral and tomographic observations of black aurora [PDF]
, 2008 Black auroras are recognized as spatially well-defined regions within a uniform diffuse auroral background where the optical emission is significantly reduced.
Senior, Andrew +5 more
core
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 +13 more
wiley +1 more source
Generation of Optical Vortex Arrays Using Single-Element Reversed-Wavefront Folding Interferometer
International Journal of Optics, 2012 Optical vortex arrays have been generated using simple, novel, and stable reversed-wavefront folding interferometer. Two new interferometric configurations were used for generating a variety of optical vortex lattices.
Brijesh Kumar Singh +3 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Flexible piezoresistive pressure sensors underpin wearable and soft electronics. This review links sensing physics, including contact resistance modulation, quantum tunneling and percolation, to unified materials/structure design. We highlight composite and graded architectures, interfacial/porous engineering, and microstructured 3D conductive networks
Feng Luo +2 more
wiley +1 more source
, 2010 Optical vortices form three-dimensional lines of darkness in scalar light. They are places where the phase becomes undefined and hence singular in value.
King, Robert Paul
core
Magneto–Optical Kerr Effect Microscopy Investigation on Permalloy Nanostructures [PDF]
, 2013 This thesis focuses on the investigation of magnetic domains in ultrasmall permalloy (Ni80Fe20) structures down to nanometre size. Magnetic domains and domain walls in nano objects are often observed using a very high resolution and high power microscope
Bin Haji Hujan, Zulzawawi
core
A: Universality in Vortex Formation. B: Evaluation of Mach Wave Radiation Mechanisms in a Supersonic Jet [PDF]
, 2000 In this thesis two distinct features of coherent structures are investigated. In Part I a model for the pinch-off process in vortex ring formation is developed.
Mohseni, Kamran
core +1 more source
Optical vortex lasers [Invited]
Optics ExpressThe manipulation of light fields has become pivotal in advancing various domains of optics, including classical and quantum communications, optical trapping, optical metrology and high-resolution imaging. Among various techniques for creating optical vortices, the optical vortex lasers, distinguished by directly emitting customized beams with phase or ...
Jian Wang +3 more
openaire +2 more sources