Abstract: The present disclosure relates to methods for biosensing using one-dimensional conducting polymer systems. The present disclosure also relates to one-dimensional sensors having substrates coated with conducting polymers such as polyaniline. The geometry of the substrates is configured to maximize the geometrical probability of detecting pathogens, aerosols, etc.

Abstract: Systems are provided for measuring the conductivity of a liquid medium or a gel-like solid or semi-solid medium in which airborne viruses have been forced to fall; and monitoring the resulting changes in the capacitive and resistive properties of the medium due to colloidal electrochemistry of the viral particles using a range of frequency detection techniques. Various control parameters can be implemented to facilitate the estimation of very low viral concentration levels in the medium. The control parameters can include, for example, the level of the medium, the temperature of the medium, statistical classification parameters, and the addition of a buffer to the medium to amplify the signal.

Abstract: Biosensors are provided for the detection of pathogens such as viruses. The sensors can includes a substrate, and a film disposed on the substrate. The film can include an electrically-conducting polymer, and an aromatic dialdehyde such as terephthaldehyde. The sensors experience a fast and repeatable decrease in electrical conductivity in the presence of certain pathogens, including the SARS-Cov-2 pseudo virus.

Abstract: Systems and methods are provided for detecting potentially fatal, and non-fatal diseases in an non-invasive, low-cost, and reliable manner by detecting the trace presence of volatile organic compounds (VOCs) in the human breath. The systems and methods can be home-based, non-invasive systems and methods for diagnosing CLD (chronic liver disease), CKD (chronic kidney disease), and other diseases using lifestyle-based, repetitive detection of VOCs in the human breath and an adaptive machine learning algorithm.

Abstract: Systems and methods are provided for reliably detecting aerosolized virus particles using electrochemical characteristics of the virus, and its interaction with ?-conjugated conducting solid-state substrates.

Abstract: Systems for detecting aerosolized viral loads in an airspace include a first and, optionally, a second volume of a liquid. The first volume includes particles sampled from the airspace, and the second volume is free of virus particles. A first conductivity probe is immersed in the first liquid, and a second conductivity probe is immersed in the second liquid. An alternating voltage is applied to each of the first and second conductivity probes. The difference between the resulting alternating currents through the first and second conductivity probes is determined, and is used to estimate the viral load in the first volume, and in the airspace.