6814 Suchergebnisse für: „“
Fibre based cellular transfection
Optically assisted transfection is emerging as a powerful and versatile method for the delivery of foreign therapeutic agents to cells at will. In particular the use of ultrashort pulse lasers has proved...
PublikationenGeneration of multiple Bessel beams for a biophotonics workstation
We present a simple method using an axicon and spatial light modulator to create multiple parallel Bessel beams and precisely control their individual positions in three dimensions. This technique is tested...
PublikationenHigh quality quasi-Bessel beam generated by round-tip axicon
We study theoretically and experimentally the spatial intensity distribution of the zero-order Bessel beam formed by the axicon which possess a rounded tip. Such a tip generates a refracted beam that interferes...
PublikationenOptical micromanipulation using supercontinuum Laguerre-Gaussian and Gaussian beams
We characterize a single beam supercontinuum "white light" trap and determine the trap stiffness in the transverse trapping plane. We realize a holographic white light trapping system using a spatial light...
PublikationenTunable Bessel light modes: engineering the axial propagation
Due to their immunity to diffraction, Bessel light modes potentially offer advantages in various applications. However, they do exhibit significant intensity variations along their axial propagation length...
PublikationenPropagation characteristics of Airy beams: dependence upon spatial coherence and wavelength
We generate a broadband "white light" Airy beam and characterize the dependence of the beam properties on wavelength. Experimental results are presented showing that the beam's deflection coefficient and...
PublikationenExperimental and theoretical determination of optical binding forces
We present an experimental and theoretical study of long distance optical binding effects acting upon micro-particles placed in a standing wave optical field. In particular we present for the first time...
PublikationenOptical path clearing and enhanced transmission through colloidal suspensions
We utilize advanced laser fields to clear a path through a dynamic turbid medium, a concept termed "Optical path clearing (OPC)." Particles are evacuated from a volume of the medium using the gradient...
PublikationenShaping the light transmission through a multimode optical fibre: complex transformation analysis and applications in biophotonics
We present a powerful approach towards full understanding of laser light propagation through multimode optical fibres and control of the light at the fibre output. Transmission of light within a multimode...
PublikationenNumerical investigation of passive optical sorting of plasmon nanoparticles
We explore the passive optical sorting of plasmon nanoparticles and investigate the optimal wavelength and optimal beam shape of incident field. The condition for optimal wavelength is found by maximising...
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