University of Houston System

Other

Epion Corporation

Wei-Kan Chu

Chase K McMichael

Ki-Bui Ma

Lin Shao

Jiarui Liu

Quark Yung-Sung Chen

Xuemei Wang

Mark Alan Lamb

Xinming Lu

Nongqiang Fan

Judy Zhihong Wu

Kenneth D Greis

Jiming Bao

Feng Lin

Jang-Horng Yu

Oomman K Varghese

Indrajith Rajapaksa

Ignatius S Tsong

Shuai Yue

Ivy Ahiabu

Dharshana Wijesundara

Eujeong Lee

Ki Bui Ma

Dharshana N Wijesundera

Yevgeniy Postrekhin

Rodger Sheldon Cooley

Aruna Wijeratne

Jiarui Lui

Harold Zule Xia

Maggie Paulose

Di Chen

Dennis Mcwilliams

An apparatus for drug delivery is presented in accordance with aspects of the present disclosure. The apparatus includes a laser-driven photoacoustic microfluid pump (LDMP), an open tube capillary including a first end and a second end; the first end disposed on the LDMP, the open tube capillary configured to store a drug. The LDMP is configured to generate a fluidic jet from the drug and deliver the drug.

Apparatus and methods for medical applications of laser driven microfluid pumps

Titania nanotube arrays are useful for phosphopeptide enrichment and separation. These highly ordered titania nanotube arrays are a low cost and highly effective alternative to the use of liquid chromatography mass spectrometry (LC-MS) methods using meoporous titania beads or particles. The highly ordered TiOnanotubes are grown on surfaces coated with Ti metal, or preferably on Ti wires, by methods that preferably include anodic oxidation.

Highly ordered titania nanotube arrays for phosphoproteomics

Methods for fabricating metal nano-particle embedded enhancement substrates used for surface enhanced Raman spectroscopy (SERS) including ion implanting metal nano-particles into the substrate and etching the substrate to partially expose the metal nano-particles. The resulting material is useful as a SERS substrate for detection of molecules adsorbed on it by surface enhanced Raman spectroscopy.

Methods for fabrication of substrates for surface enhanced Raman spectroscopy

Vacancies and dopant ions are introduced near the surface of a semiconductor layer structure. Implanted dopant ions which diffuse by an interstitialcy mechanism have diffusivity greatly reduced, which leads to a very low resistivity doped region and a very shallow junction.

Method for shallow dopant distribution

This invention is related to equipment and techniques for fast neutron activation analysis of explosives and /or other warfare agent. The techniques are based on 14 MeV fast neutrons from D-T fusion reaction, the kinematics of the nuclear reaction and fast coincidence between &#x3b1;-particles of the D-T reaction and &#x3b3;-quanta from fast neutron induced reactions. A fast neutron generator with effective target cooling and different operation modes provides high neutron yield, long life, and simple maintenance of the equipment and good geometric resolution of the directional neutron beam. High positional resolution of the directionally scanning neutron beam, high time resolution of the coincidence and high neutron yield provide the real time robust screen of explosives with high speed and/or high sensitivity, flexibility for big and small items and overall high probability of detection (PD) and low probability of false alarms (PFA). The remote video scan device also has zooming capability to change solid angle.

Explosives detection by directional fast neutron beams scan with associated particles

Vacancies and dopant ions are introduced near the surface of a semiconductor wafer. The dopant ions which diffuse by an interstitialcy mechanism have diffusivity greatly reduced, which leads to a very low resistivity doped region and a very shallow junction.

A method of forming a stable junction on a microelectronic structure on a semiconductor wafer having a silicon surface layer on a substrate includes the following steps: implanting dopant ions into the surface layer; cleaning and oxidizing the surface layer, and twice annealing the wafer to recover a damaged silicon crystal structure of the surface layer resulting from the low energy ion implantation. The first annealing process uses a temperature range of 800&deg; C. to 1200&deg; C. for a duration from about a fraction of a second to less than about 1000 seconds, with a ramp-up rate of about 50&deg; C./second to about 1000&deg; C./second. The second annealing process uses a temperature range of 400&deg; C. to 650&deg; C. for a time period of from about 1 second to about 10 hours, and more preferably, from about 60 seconds to about 1 hour. Both annealing processes include cooling processes.

Method to overcome instability of ultra-shallow semiconductor junctions

Semiconductor wafer with ultra thin doping level formed by defect engineering

Thermal neutron irradiation of superconducting body compositions into which Li or B has been incorporated as a unit cell external or internal dopant introduces by the nuclear reaction of the dopant pinning centers which substantially improve the critical current density of the body.

Method for producing formed bodies of high temperature superconductors having high critical currents

Trapped field magnets (TFMS) on an NMR logging tool are used to produce a static magnetic field in a formation surrounding a borehole. The TFMs are made of material having a high T , so that the magnetic field can be sustained for the duration of the well logging by enclosing the TFMs within a cryostat containing liquid nitrogen as a coolant. By using the TFMs, the field strength within this region is much higher than is attainable with conventional magnets, giving an improved signal to noise (S/N) ratio for the NMR signals. The magnetic field strength within the TFMs is kept at a low enough value that instability problems associated with these materials do not arise. The field strength may be selected based upon knowledge of the resistivity and dielectric constant of the formation and the associated skin depth for electromagnetic signals. This makes it possible to use the TFMs in both wireline and measurement while drilling (MWD) environments. In one embodiment of the invention, the TFMs are magnetized outside the borehole environment using conventional high field strength electromagnets prior to emplacement within the cryostats. In another embodiment of the invention, vortex currents within the TFMs are induced in situ over a period of time, so that the power requirements for the inducing field are attainable in a borehole environment. A pulsed radio frequency (RF) magnetic field is produced using an RF antenna in the NMR tool that is orthogonal to the direction of the static magnetic field. The NMR pulse echo signals induced in the formation indicative of a parameter of interest in the formation is received by a receiver on the tool

NMR logging tool with Hi-Tc trap field magnet

Planarizing High Temperature Superconductor (HTS) surfaces, especially HTS thin film surfaces is crucial for HTS thin film device processing. Disclosed is a method of surface planarization for HTS film. The method includes first smoothing the HTS surface by Gas Cluster Ion Beam bombardment, followed by annealing in partial pressure of oxygen to regrow the damaged surface layer. A rough HTS surface can be planarized down to a smoothness with a standard deviation of one nanometer or better.

Surface planarization of high temperature superconductors

A torque/reactive momentum wheel control system for use in satellites for dynamic attitude maintenance and alteration where the flywheel of each momentum wheel is levitated by a high-temperature superconducting element repulsively interacting with permanent magnets in the flywheel. The spin rate (rpm) of the flywheel being controlled by either an active magneto or electromagneto drive system. Each momentum wheel is cooled by a cryo-cooler and can have a total weight of about 10 Kg to a fraction of 1 Kg and delivering 3.5 Js with less than 1 W loss.

Satellite angular momentum control system using magnet-superconductor flywheels

Disclosed are devices for influencing and/or controlling relative motion between members, such as vibration damping or absorbing devices, clutches and brakes. The devices comprise a magnet on one member and a field cooled superconductor on the other member. The devices utilize the interaction of the magnetic field of the magnet as it moves through the pinned flux in the superconductor to either influence or control relative motion.

Magnet-superconductor systems for controlling and influencing relative

Disclosed is a flywheel system for storing kinetic energy which utilizes a high temperature superconductor/magnet system for the flywheel bearings. The flywheel includes a first magnet, and having a ring magnet defining an opening. The levitation system includes a magnet for attractively interacting with first flywheel magnet, with a high temperature superconductor interposed between them, and further includes a magnet system for repulsively interacting with and partially inserted into the ring magnet.

Magnet-superconductor flywheel and levitation systems

An isolation system for isolating a first object from vibrations from a second object. Such vibrations will have three orthogonal components, one oriented along a line between the objects, and two oriented 90.degree. apart in a plane normal to that line. The system includes three superconductor/magnet stages, each stage designed to extinguish one of the orthogonal components.

Growing community of inventors

Pearland, TX, United States of America

Wei-Kan Chu