Results 91 to 100 of about 1,176,513 (293)
Studies of particle and atom manipulation using free space light beams and photonic crystal fibres [PDF]
, 2009 Light can exert optical forces on matter. In the macroscopic world these forces are minuscule, but on the microscopic or atomic scale, these forces are large enough to trap and manipulate particles.
Gherardi, David Mark
core +2 more sources
Propagation of Tricomi-Gaussian beams in a chiral medium
Results in PhysicsIn this paper, propagation of a newly introduced Tricomi-Gaussian beam in a chiral medium is investigated for the first time. By using the Collins diffraction integral formula and matrix optical theory, analytical expression of Tricomi-Gaussian beams ...
Yuzhong Qiu, Zhirong Liu
doaj +1 more source
Gaussian beams diffracting in time [PDF]
Optics Letters, 2017 We show how to transform the mathematical expression of any monochromatic paraxial light beam into the expression of a pulsed beam whose diffraction is switched from the axial direction to its temporal structure. We exemplify this transformation with time-diffracting Gaussian beams. The conditions for the obtained diffraction-free wave to be physically
openaire +3 more sources
Pressure‐Assisted Dimensional Transformation of 2D Hydrogenated Borophene into 0D Boron Quantum Dots
Advanced Functional Materials, EarlyView.Hydrogenated borophene (HB) is transformed into distinct boron nanostructures through a solvent‐free thermal process. Under flowing nitrogen, hydrogen escape promotes reconstruction into B2O3 nanoplatelets, whereas hydrogen‐induced pressure under sealed conditions facilitates fragmentation into boron quantum dots.
Ozden Gunes Yildiz +11 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Resonant standing waves generate large‐area lattices of liquid‐crystal topological defects that are permanently encoded into polymer coatings by photopolymerization. The preserved director architecture produces thermally reconfigurable surface topographies while maintaining programmable optical functionality, demonstrating a scalable strategy for ...
Jacques A. Peixoto +6 more
wiley +1 more source
2D Skeletal Muscle Thin Film Actuators Enhance Efficiency of Biohybrid Robots
Advanced Functional Materials, EarlyView.2D skeletal muscle thin film actuators generate millinewton‐scale forces and millimeter‐scale strokes while remaining functional for over 30 days. Their force density is 20‐fold higher than 3D skeletal muscle actuators, enabling multi‐fin robots with tunable speed and multidirectional steering.
Maheera Bawa +5 more
wiley +1 more source
Extension of filament propagation in water with Bessel-Gaussian beams
AIP Advances, 2016 We experimentally studied intense femtosecond pulse filamentation and propagation in water for Bessel-Gaussian beams with different numbers of radial modal lobes. The transverse modes of the incident Bessel-Gaussian beam were created from a Gaussian beam
G. Kaya +7 more
doaj +1 more source
Dividing the Topological Charge of a Laguerre-Gaussian Beam by 2 Using an Off-Axis Gaussian Beam. [PDF]
Micromachines (Basel), 2022 Kovalev AA +3 more
europepmc +1 more source
Advanced Functional Materials, EarlyView.Autonomous scanning probe microscopy and multi‐objective Bayesian optimization navigate a ternary (Al,Sc,B)N combinatorial library. Registered photoluminescence, electron‐probe compositional mapping, and X‐ray diffraction connect local electromechanical function to defect‐sensitive emission, composition, and crystal structure.
Yu Liu +12 more
wiley +1 more source
Silicon photonic Bessel-Gaussian beam generation unlocks new possibilities for long-range sensing. [PDF]
Light Sci Appl, 2023 Kim S.
europepmc +1 more source