University of Missouri

Habsonic LLC

University of Rhode Island

Jie Huang

Hai Xiao

Rex E Gerald, Ii

Xinwei Lan

Tao Wei

Klaus Woelk

Lingyu Chi

Ming Huang

Ming Luo

Chen Zhu

Rui Bo

Annalise R Pfaff

An open-ended hollow coaxial cable resonator probe configured to receive an aerosol sample for analysis. A metal post shorts the resonator's inner and outer conductors. A metal plate is spaced apart from an open end of the resonator by a dielectric layer that contains the received aerosol sample. Interrogator circuitry coupled to the resonator transmits an electromagnetic wave within the resonator and generates an electric field at the open end of the resonator. The interrogator circuitry is responsive to the generated electric field for determining a resonance frequency and an impedance of the resonator when the aerosol sample is present in the dielectric layer and is configured to identify virus particles in the aerosol sample as a function of the determined resonance frequency and impedance. A portable aerosol analyzer comprises the open-ended hollow coaxial cable resonator and a mouthpiece through which a subject expels a breath sample into the open end of the resonator. Antibodies tethered to high-permittivity nanoparticles attach to pathogens selectively, resulting in enhanced sensing with molecular-level specificity.

Open-ended hollow coaxial cable resonator sensor

Methods and apparatuses for using the impedance inhomogeneity pattern (IIP) of a transmission line, or one or more segments thereof, to verify the identity of the transmission line and/or detect whether or not the transmission line has been altered or tampered with. Because the impedance inhomogeneity pattern of a transmission line is unique, unpredictable, and uncontrollable, it can be used as a physical unclonable function (PUF). The IIP can be obtained by a method such as frequency domain reflectometry or time domain reflectometry, and is then compared with a previously stored intrinsic IIP obtained from a transmission line (or segment(s)) prior to first use through the use of, for example, correlation or coherence functions. The method can be used on any transmission line, including electrical, optical and acoustic transmission lines. The method is useful for enabling or enhancing physical layer communication link security, transmission line sensing security, supply chain security, product authentication, physical encryption, anti-counterfeiting, manufacturing traceability, and the like.

Methods and apparatuses for identifying transmission lines via impedance inhomogeneity patterns

System and method for determining real-time sag and shape information of an electrical power line based on strain distribution along a length of an optical fiber associated with the power line. An embedded fiber coupled to an overhead transmission line measures strain using the backscatter of an optical signal, the optical signal is then interrogated using an interferometer.

Real-time overhead power line sag monitoring

Devices and methods are provided for measuring temperatures and pHs of a sample in situ using NMR spectroscopy, and for sealing one or more ends of a capillary tube after a reference material has been added to the capillary tube, which is used in an in situ NMR temperature measurement device. A method for measuring a pH of a sample in situ using NMR spectroscopy includes providing an in situ NMR pH measurement device. This device includes a sample housing member configured to house a target sample, at least one pH sensor configured to exhibit an NMR spectral change due to a change in pH value of the target sample, and a pH sensor containment member configured to house the at least one pH sensor. The target sample is added to the sample housing member. NMR spectra are obtained to then determine the pH of the target sample.

In situ NMR parameter monitoring systems and methods for measuring pH and temperature

An optical carrier based microwave interferometry (OCMI) system for measuring a physical, chemical, or biological property broadly comprises an optical carrier signal source, a waveguide, a microwave envelope signal source, a microwave modulator, an optical interferometer, a detector, and an analyzer. An optical carrier signal is modulated with a microwave envelope signal and transmitted through an optical interferometer. The optical signal is interrogated in microwave domain to obtain interference patterns or absorption/emission spectra corresponding to the physical, chemical, or biological property being measured.

Optical carrier based microwave interferometric system and method

A device and method include a broadband light source in communication with a waveguide to provide a light signal for interrogating each of a plurality for sensors within the waveguide. An analyzer modulates the light signal with a microwave signal and demodulates and evaluates light signals reflected by the sensors. An amplitude and a phase of each reflected signal from each sensor is distinguished in the time domain and the modulated signal is reconstructed in the frequency domain.

Growing community of inventors

Rolla, MO, United States of America

Jie Huang