摘要:
A fluid-channeling device comprising: a fluid source; and a beam generator configured to generate a collimated vortex beam, wherein the beam generator is operatively coupled to the fluid source such that fluid from the fluid source may be introduced into a vortex of the collimated vortex beam, and wherein the collimated vortex beam is tuned such that when the fluid is in the vortex the fluid interacts with the collimated vortex beam to create an insulating pseudo-wall between the collimated vortex beam and the fluid such that the fluid is suspended in, and capable of traveling through, the vortex.
摘要:
Methods enable the capture and manipulation of minute particles. One method includes locating a particle on a specimen stage; generating a finite-length open-ended hollow tube laser output around the particle; generating opposing end-cap laser outputs at either end of the hollow tube laser output to enclose the particle; and moving at least one of the specimen stage, hollow tube laser output and end cap laser outputs to re-position the particle. Another method includes locating a particle on a specimen stage; generating a first finite-length open-ended hollow tube laser output around the particle; generating a second finite-length open-ended hollow tube laser output around the particle, whereby the particle becomes enclosed at the intersection of the first and second hollow tube laser outputs; and pivoting at least one of the first and second hollow tube laser outputs such that the particle is re-positioned.
摘要:
A microbot includes a spherical housing, first and second servomotors that are located internal to the housing and oriented horizontally and orthogonal to each other, and a plunger within the housing that selectively extends in the vertical direction. Castors are attached to each servomotor; and traction balls corresponding to each castor are placed so that each ball frictionally engages both a respective castor and the interior of the housing at the same time. As the servomotors rotate, the attached castors also rotate, which causes rotation of the traction balls and rolling of the housing, and results in translation of the microbot in the horizontal plane. As the plunger rapidly extends, it strikes the interior surface of the housing with sufficient force to cause a hopping motion of the microbot in the vertical direction.
摘要:
A method and camera for generating a high dynamic range (HDR) image comprising the following steps: receiving a first optical signal from a lens and generating a first output signal at a first image acquisition chip, wherein the first image acquisition chip is coated with a first partial reflection coating; reflecting the first optical signal off the first partial reflection coating to create a second optical signal such that the second optical signal has a lower intensity than the first optical signal; receiving the second optical signal and generating a second output signal at a second image acquisition chip; and combining the first and second output signals to create the HDR image.
摘要:
A system includes at least two optical fibers crossing to form a vertice. The optical fibers comprise a core, a cladding surrounding the core, and a conductive coating at least partially surrounding the length of the cladding. A portion of the core of each of the fibers is exposed proximate to the vertice. An optical microsphere whispering gallery mode (WGM) resonator is positioned to cover exposed core portion of each fiber and in contact with the conductive coating of each fiber. The optical fibers may be orthogonal to each other or offset by a non-orthogonal and non-zero angle. The WGM resonator may be positioned between each of the fibers. An optical energy source may be coupled to an end of the optical fibers, with an optical detector coupled to the other end. A voltage source may be connected to the conductive coating of each of the optical fibers.
摘要:
A scanning probe microscopy head may include a base portion, cantilevers coupled to the base portion, and at least one tip coupled to each of the cantilevers. At least two of the cantilevers and associated tips may be configured to perform a different scanning probe microscopy technique. The cantilevers may be positioned perpendicular to the base portion and may be coupled to the perimeter of the base portion. The base portion may include circuitry coupled thereto for providing electricity to the tips. The cantilevers may each be placed into a recessed slot along the perimeter of the base and secured to the base by a securing mechanism, such as a spring clip. The cantilevers may be operatively coupled to a linear positioner, such as a piezoelectric motor, coupled to the perimeter of the base for controlling the amount of protrusion of the cantilevers from the perimeter of the base.
摘要:
A method of tuning threshold voltages of interdiffusible structures. The method includes a step of situating a interdiffusible structure in a path of a laser and a step of illuminating the interdiffusible structure with laser energy until a desired threshold voltage is obtained.
摘要:
A method of tuning threshold voltages of interdiffusible structures. The method includes a step of situating an interdiffusible structure in a path of a laser and a step of illuminating the interdiffusible structure with laser energy until a desired threshold voltage is obtained.
摘要:
A system includes an ultraviolet light source, such as light-emitting diodes, disposed between a first ionic grid and a second ionic grid. The first and the second ionic grids have opposite ionic charges and a plurality of silver nanoparticles disposed thereon. The ultraviolet light source is configured to emit, onto the first and the second ionic grids, ultraviolet radiation having a wavelength of between about 100 nm and about 280 nm. A biochemical detector may be located adjacent to the first ionic grid on a side of the first ionic grid opposite the ultraviolet light source. The ultraviolet light source, first ionic grid, and second ionic grid may be located within a housing connected to a gas mask, and a membrane filter may be disposed between the gas mask and housing. The housing may include a power source connected to the ultraviolet light source.
摘要:
Fabrication of a semiconductor structure is achieved by using a Dip Pen Nanolithography (DPN) tip to apply a metal catalyst to a prepared substrate. The catalyst is applied in a predetermined pattern, and crystal growth is established at the catalyst site.