Abstract: The frequency of the fundamental symmetric mode of two or more coupled essentially identical high temperature superconductor coils can be tuned, with little degradation in Q, by mechanically displacing the two or more coils with respect to one another. These coupled coils are useful in a detection system for detecting frequencies.

Abstract: This invention provides a laser trimming method for tuning the frequency of a spiral resonator, and for improving the characteristics of a high temperature superconductor filter comprised of high temperature superconductor spiral resonators, by tuning the individual high temperature superconductor spiral resonators. This invention also provides a method for tuning the resonance frequency of a high temperature superconductor planar coil. This invention also provides a laser ablation process for creating high temperature superconductor circuit elements.

Abstract: The use of multiple sensors improves the measurement speed of a nuclear quadrupole resonance detection system when the nuclear quadrupole resonance frequency is known only within a range of frequencies.

Abstract: The use of multiple sensors improves the measurement speed of a nuclear quadrupole resonance detection system when the nuclear quadrupole resonance frequency is known only within a range of frequencies.

Abstract: The use of two or more sensors tuned to at least two different nuclear quadrupole resonance frequencies of a target compound to detect the different nuclear quadrupole resonance signals greatly reduces the chance of misidentification, and thereby improves nuclear quadrupole resonance detection system performance.

Abstract: The use of a high temperature superconductor single loop or coil in the Q-damping circuit for a high temperature superconductor transmit, receive, or transmit and receive self-resonant coil in a nuclear quadrupole resonance system results in improved performance of the nuclear quadrupole resonance detection system.

Abstract: A gas detector includes a predetermined amount of a sensor material having at least one optical property which changes as a result of reaction with a target gas and a photometric device operable to measure the intensity of said at least one optical property of the sensor material. The reaction is such that there is a one-to-one relationship between the magnitude of the intensity of at least one optical property and the concentration of the target gas in the gas sample whereby the concentration of the target gas in the gas sample may be determined from the measured magnitude of the intensity of said at least one optical property after the passage of the predetermined volume of gas sample over the given area of sensor material.

Abstract: The methods of the invention for scanning a band of frequencies using a nuclear quadrupole resonance detection system with an array of high temperature superconductor sensors to detect nuclear quadrupole resonance signals improve the nuclear quadrupole resonance detection system performance.

Abstract: The methods of the invention for scanning a band of frequencies using a nuclear quadrupole resonance detection system with an array of high temperature superconductor sensors to detect nuclear quadrupole resonance signals improve the nuclear quadrupole resonance detection system performance.

Abstract: The use of two or more sensors tuned to the same nuclear quadrupole resonance frequency and detecting the nuclear quadrupole resonance signal results in improved signal-to-noise ratio and therefore improved nuclear quadrupole resonance detection system performance.

Abstract: The methods of the invention for scanning a band of frequencies using a nuclear quadrupole resonance detection system with an array of high temperature superconductor sensors to detect nuclear quadrupole resonance signals improve the nuclear quadrupole resonance detection system performance.

Abstract: This invention relates to a method for identifying biological agents using high temperature superconductor enhanced nuclear quadrupole resonance. The targeted biological agents are attached to functionalized nanoparticles and the quadrupole nuclei in these nanoparticles are detected by the nuclear quadrupole resonance detection system.

Abstract: This invention relates to the use of a nuclear quadrupole resonance detection system for detecting contraband, wherein the detection system comprises a container with a detection panel and at least one coil for exciting and detecting the nuclear quadrupole resonance frequencies of a contraband source placed near an outer side of the detection panel.

Abstract: This invention relates to a method for reducing the partial pressure of undesired gases in a small vacuum vessel. The method comprises using a getter pump with a sufficient sorption capacity to eliminate the need for a bakeout step.

Abstract: This invention relates to a method for reducing gaseous contamination in a pressure vessel that comprises using a getter as an integral part of the pressure vessel and thereby eliminating the need for a bakeout cycle.