6814 Suchergebnisse für: „“
Exploiting multimode waveguides for pure fibre-based imaging
There has been an immense drive in modern microscopy towards miniaturization and fibre-based technology. This has been necessitated by the need to access hostile or difficult environments in situ and in...
PublikationenLight-sheet microscopy using an Airy beam
Light-sheet microscopy facilitates rapid, high-contrast, volumetric imaging with minimal sample exposure. However, the rapid divergence of a traditional Gaussian Light sheet restricts the field of view...
PublikationenIn situ wavefront correction and its application to micromanipulation
In any optical system, distortions to a propagating wavefront reduce the spatial coherence of a light field, making it increasingly difficult to obtain the theoretical diffraction-limited spot size. Such...
PublikationenShaping the future of manipulation
Optical forces can be used to manipulate biological and colloidal material in a non-contact manner. This forms the foundation of a wealth of exciting science, particularly in the fields of physics, biology...
PublikationenExperimental demonstration of optical transport, sorting and self-arrangement using a ‚tractor beam‘
Following the Keplerian idea of optical forces, one would intuitively expect that an object illuminated by sunlight radiation or a laser beam will be accelerated along the direction of photon flow. Recent...
PublikationenSeeing through chaos in multimode fibres
In a similar fashion to diffusers or other highly scattering media, multimode fibres deliver coherent light signals in the form of apparently random speckled patterns. In contrast to other optically random...
PublikationenSub-micron particle organization by self-imaging of non-diffracting beams
We present the first theoretical and experimental study of dielectric sub- micron particle behaviour in an optical field generated by interference of co- propagating non- diffracting beams of different...
PublikationenSurface delivery of a single nanoparticle under moving evanescent standing-wave illumination
We study the delivery of a submicrometre-sized spherical dielectric particle suspended in water and confined in an evanescent field in the proximity of a glass-water interface. When illuminated by a single...
PublikationenFormation of long and thin polymer fiber using nondiffracting beam
We present a unique method that utilizes high intensity core of the zero-order nondiffracting beam (NDB) to fabricate a homogeneous polymer fiber as narrow as 2 mu m and as long as centimeters. The constant...
PublikationenOptical tracking of spherical micro-objects in spatially periodic interference fields
We present a new method that provides precise detection of micro-object position with respect to a spatially periodic illumination field. Altering the mutual position of the object and the illumination...
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