Abstract:
The fluid purification disclosed herein provides the advantages of high-voltage purification without electrocution risks. In illustrative purifiers, a contaminated fluid, such as contaminated water, is aerated and passed through a cavity that contains highly porous piezoelectric material and an ultrasonic transducer. The transducer emits ultrasonic energy that causes the piezoelectric material to discharge a high-voltage field, which produces strong oxidizing agents that kill organisms and oxidize organic pollutants. Since the ultrasonic actuator operates at relatively low voltages ( e.g ., 20-110 V) and can be electrically isolated from the fluid, illustrative purification is safe, environmentally friendly, and scalable from small to large size applications.
Abstract:
Processes and/or methods of forming substrates suitable for growing grapheme are generally described including forming a metal layer on a prepared substrate, forming a layer of dielectric material on the metal layer, and then directionally recrystallising the metal layer to form a recrystallized metal layer suitable for growing a grapheme monolayer having a length of about fifteen microns or greater.
Abstract:
The present invention provides long life optics for a modular, high repetition rate, ultraviolet gas discharge laser systems (Fig. 1B) producing a high repetition rate high power output beam (38). The invention includes solutions to a surface damage problem discovered by Applicants on CaF2 optics (4260) (422)(424)(426) located in high pulse intensity sections (10)(26) of the output beam (14C) of prototype laser systems. Embodiments include an enclosed (4) and purged beam path (14C) with beam pointing control (40A) (40B)(6) for beam delivery of billions of output laser pulses (38). Optical components and modules described herein are capable of controlling ultraviolet laser output pulses (14A) with wavelength less than 200nm with average output pulse intensities greater than 1.75x10 Watts/cm and with peak intensity or greater 3.5x10 Watts/cm for many billions of pulses (14A) as compared to prior art components and modules which failed after only a few minutes in these pulse intensities.
Abstract:
An apparatus and method are disclosed for an optical element which may comprise a main optical body comprising a crystal containing halogen atoms; a reflectivity coating for changing the reflectivity of a surface of the main body; and, an intermediate protective layer comprising a material containing free halogen atoms. The crystal may comprise an alkaline earth metal and may comprise fluorine atoms, e.g., calcium fluoride or magnesium fluoride. The intermediate protective layer may comprises a material containing free fluorine atoms, e.g., a material doped with fluorine atoms, e.g., doped fused silica. The intermediate layer comprises an amorphous portion and a polycrystalline portion. The optical element may also comprise a main optical element body; a reflectivity coating comprising a metal halide on an exterior the a surface of the main optical body; and a thin layer of protective outer coating on the reflectivity coating comprising a dense non-porous material thin enough to be transparent to the light of a selected short wavelength. The reflectivity coating may comprise a plurality of layers with at least one layer comprising a metal fluoride and the protective outer coating may comprise a layer of silicon oxyfluoride.
Abstract:
Technologies are generally described for a porous graphene electrode material is described herein that may incorporate a three-dimensional open-cell graphene structure fabricated via chemical vapor deposition onto a metal foam. After the graphene is deposited, the metal foam may be dissolved, leaving a three-dimensional open-cell graphene structure that may include single or few layer graphene. Pseudo-capacitive materials, such as Ru02, Fe304, or Mn02, may be deposited within the pores of the a three-dimensional open-cell graphene structure to form the porous graphene electrode material. The porous graphene electrode material may have a specific capacitance comparable to chemically modified graphene (CMG) electrodes. The porous graphene electrode material may also have a conductivity greater than CMG electrodes of equivalent surface area. Use of the porous graphene electrode material in capacitors may result in siginificant improvements in specific power compared to CMG based capacitors.
Abstract:
A method of separating material includes providing a mixture of a first material, such as a semiconductor, and a second material, such as an insulator or a different semiconductor. The mixture can be irradiated using a light source at a wavelength that causes the first material's conductivity to increase while leaving the second material's conductivity (substantially) unchanged. Placing the mixture in contact with a ground electrode discharges the first material but not the second material due the difference in their conductivities. Applying an electric field to the discharged mixture separates the discharged first material from the second material.
Abstract:
Technologies are generally described for hyperthermia based treatment of diseased tissues using conductive particles. Conductive particles of known composition and size distribution may be implanted in diseased tissue and exposed to an alternating magnetic field, which may be tuned to the size of the metal particles to induce eddy currents producing heat in the implanted particles. As the temperature of the metal particles increases, their resistance also increases due to their positive temperature coefficient of resistivity. An antenna placed externally to the body near metal particles may be part of a tuned RF circuit and scanned for resonance. The change either in resonance frequency or circuit impedance may provide tuned feedback, which may be used to control the hyperthermia treatment.
Abstract:
A high power narrow band, high repetition rate laser light source optical improvement apparatus and methods are disclosed with a fast angularly positionable mirror having a mirror mounting frame, a reflective optic with a coefficient different from that of the mounting frame, at least one flexure mount framed in the mounting frame that is flexible having flexure arm attached the flexture to the mounting frame. The apparatus may include a flexure force mechanism having an elongated rod. The force mechanism may prestress the flexure. The mirror maybe a grating which includes a substrate with metallic layer formed on the substrate, and a protective coating made of silica formed on the reflective metallic layer. The grating maybe actively tuned using an electro- or magneto- sensitive element. Oxides of the metal in the reflective layer may be removed by a hydrogen purge system exposed to deep ultraviolet radiation.
Abstract:
The present invention provides long life optics for a modular, high repetition rate, ultraviolet gas discharge laser systems (Fig. 1B) producing a high repetition rate high power output beam (38). The invention includes solutions to a surface damage problem discovered by Applicants on CaF 2 optics (4260) (422)(424)(426) located in high pulse intensity sections (10)(26) of the output beam (14C) of prototype laser systems. Embodiments include an enclosed (4) and purged beam path (14C) with beam pointing control (40A) (40B)(6) for beam delivery of billions of output laser pulses (38). Optical components and modules described herein are capable of controlling ultraviolet laser output pulses (14A) with wavelength less than 200nm with average output pulse intensities greater than 1.75×10 6 Watts/cm 2 and with peak intensity or greater 3.5×10 6 Watts/cm 2 for many billions of pulses (14A) as compared to prior art components and modules which failed after only a few minutes in these pulse intensities.
Abstract:
Technologies are generally described for hyperthermia based treatment of diseased tissues using conductive particles. Conductive particles of known composition and size distribution may be implanted in diseased tissue and exposed to an alternating magnetic field, which may be tuned to the size of the metal particles to induce eddy currents producing heat in the implanted particles. As the temperature of the metal particles increases, their resistance also increases due to their positive temperature coefficient of resistivity. An antenna placed externally to the body near metal particles may be part of a tuned RF circuit and scanned for resonance. The change either in resonance frequency or circuit impedance may provide tuned feedback, which may be used to control the hyperthermia treatment.