Abstract: A printed radiation sensor that includes a substrate, an interdigitated electrode, and a conductive polymeric film. The interdigitated electrode including a first electrode with a plurality of first electrode digits and a second electrode with a plurality of second electrode digits. The interdigitated electrode disposed on the substrate. The conductive polymeric film including a blend of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) and polyvinyl alcohol (PVA). The PEDOT:PSS is configured to provide an electrically conductive medium. The PVA is configured to provide ductility and stability of the printed radiation sensor. Upon radiation exposure, the PVA is further configured to crosslink within a material matrix of the printed radiation sensor militating against the recombination of chain scission by forming a semi-interpenetrating polymer network (SIPN) with the PEDOT:PSS to provide an enhanced and stable impedance reading.

Abstract: A method of transducing electrical energy to sound is disclosed which includes providing a transducer, the transducer includes lead zirconate titanate (PZT) particles mixed with graphene nanoplatelets (GNPs) in a flexible substrate aligned in a first direction, forming a transducer subsystem, a first conductive protective electrode having a width and a length configured to provide a first electrical connectivity to an external circuit, and a second conductive protective electrode having the width and the length and configured to provide a second electrical connectivity to the external circuit, wherein the transducer subsystem is sandwiched between the first and second conductive protective electrodes, and providing an external circuit configured to provide an electrical signal to the first and second conductive protective electrodes to thereby transduce the electrical signal to sound.

Abstract: A wearable accessory capable of communicating data to actuators or from sensors is disclosed. The wearable accessory includes a conductor wire disposed in a moldable medium according to a predetermined pattern, the moldable medium being an electrically insulating material, the conductor wire terminating at an input and an output.

Abstract: A humidity sensor may include a metalized substrate comprising a laser ablated portion and a remaining metal portion. The remaining metal portion may include a spiral inductor and an interdigitated capacitor. The interdigitated capacitor may be coupled in parallel with the spiral inductor. The interdigitated capacitor may be centrally positioned with respect to the spiral inductor and surrounded by spirals of the spiral inductor. The spiral inductor and interdigitated capacitor may be formed by selectively ablating the metallized substrate to define the inductor and capacitor.

Abstract: An electrochemical biosensor for detection of a calprotectin antigen in a sample solution. The electrochemical biosensor includes a reference electrode, a counter electrode, and a working electrode. The working electrode includes a surface coated with an anti-calprotectin antibody that binds to the calprotectin antigen in the sample solution. The electrochemical biosensor detects the concentration of the calprotectin antigen in the sample solution based on a resistance change at the surface of the working electrode.

Abstract: A method for manufacturing an implantable device is provided. The method includes laser nano-texturing a titanium surface. The method further includes applying an aqueous silver ion solution to form a silver ion complex on the nano-textured titanium surface. The method also includes reducing, using laser-assisted photocatalytic reduction, the silver ion complex to silver ion particles which are immobilized on the nano-textured titanium surface.

Abstract: An ozone generation apparatus includes a flexible and porous gas permeable treatment patch configured to be releasably secured to a user's body such that an exterior surface of the treatment patch directly contacts skin on the user's body, and an ozone generating unit fluidically coupled to the treatment patch and configured to provide a flow of ozone through pores in the treatment patch toward and out through the exterior surface of the treatment patch. In certain embodiments, the patch may be used for combination therapies in which both ozone and antibiotics are simultaneously applied to the user's body.

Abstract: A method of transducing electrical energy to sound is disclosed which includes providing a transducer, the transducer includes lead zirconate titanate (PZT) particles mixed with graphene nanoplatelets (GNPs) in a flexible substrate aligned in a first direction, forming a transducer subsystem, a first conductive protective electrode having a width and a length configured to provide a first electrical connectivity to an external circuit, and a second conductive protective electrode having the width and the length and configured to provide a second electrical connectivity to the external circuit, wherein the transducer subsystem is sandwiched between the first and second conductive protective electrodes, and providing an external circuit configured to provide an electrical signal to the first and second conductive protective electrodes to thereby transduce the electrical signal to sound.

Abstract: A batteryless, chipless, sensor is disclosed which includes a substrate, at least two conductive strips disposed on the substrate, a passivation layer encasing the substrate and the at least two conductive strips, wherein the conductive strips are adapted to respond to an interrogation signal from a reader having a first polarization, with a response signal at a second polarization different than the first polarization.

Abstract: A batteryless, chipless, sensor is disclosed which includes a substrate, at least two conductive strips disposed on the substrate, a passivation layer encasing the substrate and the at least two conductive strips, wherein the conductive strips are adapted to respond to an interrogation signal from a reader having a first polarization, with a response signal at a second polarization different than the first polarization.

Abstract: A method of manufacturing a copper oxide (CuxO) structure onto a Copper (Cu) surface by fabricating an electroactive hierarchical CuxO structure directly onto the Cu surface by laser-induced oxidation (LIO). The generated heat from the laser source provides energy for the oxidation of the Cu surface in the presence of atmospheric oxygen. The electroactive hierarchical CuxO structure is a binder-free nanotextured structure. The electroactive hierarchical CuxO structure may be used as a glucose sensor.

Abstract: A transducer is disclosed which includes lead zirconate titanate (PZT) particles mixed with graphene nanoplatelets (GNPs) in a flexible substrate aligned in a first direction, forming a transducer subsystem, a first conductive protective electrode having a width and a length providing an electrical connectivity to an external circuit, a second conductive protective electrode having the width and the length providing an electrical connectivity to the external circuit, wherein the transducer subsystem is sandwiched between the first and second conductive protective electrodes.

Abstract: Passive devices for non-invasive gastrointestinal (GI) sampling are disclosed. In some embodiments, a device includes a capsule housing containing an absorbent sampling hydrogel. The capsule may be ingested by a patient and subsequently travel through the GI tract. Once the capsule reaches a desired location in the GI tract, GI fluid may flow into the capsule through a sampling aperture of the capsule. The fluid may be absorbed by and stored within the sampling hydrogel for subsequent analysis, and the absorption of the fluid may cause the sampling hydrogel to expand within the capsule. The capsule may further include a sealing member positioned between the sampling hydrogel and the sampling aperture, and the expansion of the sampling hydrogel may press the sealing member against the sampling aperture to seal the capsule.

Abstract: The present disclosure relates to an ultrasonic device for real-time and nondestructive assessment of extracellular matrix stiffness, and the method of making and using the novel ultrasonic device.

Abstract: Systems and methods for assessing a microbial characteristic within a growing medium. Such a system assesses one or more microbial characteristics, such as biomass and/or microbial activity, within a growing medium, such as soil. Electrical properties of a microbially degradable material in contact with the growing medium are measured. The measurements are used to determine the microbial characteristic(s) based at least partly on degradation of the microbially degradable material.

Abstract: A sensor is disclosed which includes a piezoelectric layer, a piezoresistive layer, one or more electrode layers coupled to the piezoelectric layer and to the piezoresistive layer, the piezoelectric layer configured to provide an electrical signal in response to application of a dynamic disturbance, and the piezoresistive layer configured to provide a change in resistivity in response to application of a static disturbance.

Abstract: A fluorescent oxygen sensing ink includes at least one organic solvent, at least one polymer binder disposed in the organic solvent, and an oxygen-sensitive fluorescent dye disposed in the organic solvent. The oxygen-sensitive fluorescent dye and the at least one polymer can interact to form a moisture-resistant film. The fluorescent oxygen sensing ink can be incorporated into an oxygen sensing wound dressing.

Abstract: A microfluidic pressure sensor may include a bioinert shell having a cavity disposed therein. The cavity may include a reservoir and hydrophobic channel fluidly connected to the reservoir. Changes in pressure outside of the microfluidic pressure sensor may cause at least a portion of the shell to inflect into the reservoir thereby the fluid to move into the channel. The microfluidic pressure sensor may be bodily injected and the fluid level in the cavity may be detected using an ultrasound. The fluid level may be translated into a pressure measurement. The microfluid pressure sensor and uses thereof are suitable for bodily pressure measurements, including intra-abdominal pressure.

Abstract: Methods for fabricating printed devices and monitoring one or more performance characteristics of the printed devices during their fabrication in a high-speed process. Such a method includes developing a physics-based model of at least a first component of the printed devices, fabricating the printed devices with the high-speed process using fabrication steps that comprise depositing the first components, acquiring a physical characteristic of a plurality of the first components of a plurality of the printed devices following the depositing of the first components, predicting a performance characteristic of the printed devices based on the physics-based model of the first component and the physical characteristic acquired of the plurality of the first components; and then modifying at least one of the fabrication steps performed during the fabricating of a subsequently-fabricated group of the printed devices to adjust the performance characteristic of the subsequently-fabricated group of the printed devices.

Abstract: A printed radiation sensor that includes a substrate, an interdigitated electrode, and a conductive polymeric film. The interdigitated electrode including a first electrode with a plurality of first electrode digits and a second electrode with a plurality of second electrode digits. The interdigitated electrode disposed on the substrate. The conductive polymeric film including a blend of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) and polyvinyl alcohol (PVA). The PEDOT:PSS is configured to provide an electrically conductive medium. The PVA is configured to provide ductility and stability of the printed radiation sensor. Upon radiation exposure, the PVA is further configured to crosslink within a material matrix of the printed radiation sensor militating against the recombination of chain scission by forming a semi-interpenetrating polymer network (SIPN) with the PEDOT:PSS to provide an enhanced and stable impedance reading.