Abstract: In an embodiment, the present disclosure pertains to a method of direct ink writing (DIW). In general, the method includes extruding a resin from a print head, applying radio frequency (RF) heating to the resin, and inducing partial curing of the extruded resin layer-by-layer to thereby form a self-supporting structure. In an additional embodiment, the present disclosure pertains to a system for DIW. In some embodiments, the system includes a print head operable to extrude a resin from a nozzle and an RF applicator.

Abstract: A mechanical and electrochemical testing apparatus includes a tensile frame having a first grip and a second grip. An electrochemical cell is disposed between the first grip and the second grip. The electrochemical cell includes a working electrode port and a counter electrode port. An electrolyte is disposed in the electrochemical cell. A working electrode is coupled to the first grip and the second grip. The working electrode is in contact with the electrolyte in the working electrode port. A counter electrode is disposed in the counter electrode port. A potentiostat is coupled to the working electrode and the counter electrode.

Abstract: Provided herein are direct evaporative cooling devices and systems that are in open and closed configurations for cooling hot solid components. The devices in both configurations generally have a casing with a perforated surface where sealed within are a water/vapor separator with a reservoir volume and a thermally conductive media therein through which heat evaporates water within the media such that evaporation cools the hot solid component. The closed configuration of the device includes a condensor to receive, recondense the vapor to water and re-inject the water into the reservoir volume.

Abstract: In an embodiment, the present disclosure relates to a device having a substrate, a first polymeric layer, a second polymeric layer, a metallic layer, and a third polymeric layer. In some embodiments, the metallic layer is between the second polymeric layer and the third polymeric layer. In an additional embodiment, the present disclosure relates to a method of forming a metallic film. In some embodiments, the method includes depositing a first polymeric layer on a substrate, depositing a second polymeric layer on the first polymeric layer, depositing a metallic layer on the second polymeric layer, and depositing a third polymeric layer on the metallic layer. In some embodiments, the metallic layer is between the second polymeric layer and the third polymeric layer.

Abstract: In an embodiment, the present disclosure pertains to an organ-specific wireless optogenetic device. In some embodiments, the device includes an electronic circuit, such that the electronic circuit is configured to harvest and convert radio frequency (RF) energy into optical energy and a tether having a ?LED, where the ?LED illuminates targeted regions in the organ. In an additional embodiment, the present disclosure pertains to a method of treating obesity. In general, the method includes implanting an organ-specific wireless optogenetic device into a subject, activating an RF-power system to produce RF energy, harvesting, by the organ-specific wireless optogenetic device, the RF energy, converting, by the organ-specific wireless optogenetic device, the RF energy into optical energy, illuminating, by the ?LED, targeted regions in the stomach of the subject, and stimulating nerve endings to thereby suppress appetite in the subject.

Abstract: Provided herein are wearable devices and systems therewith configured with wearable sensors, a machine learning framework with a machine learning model, and reinforcement learning models. Also provided are methods utilizing the wearable devices and technologies for understanding and optimizing emotional states in a subject and for predicting anxiety in a subject.

Abstract: Provided herein are high viscosity friction reducers that are self-degrading and a one-component system using the same high viscosity friction reducers. The high viscosity friction reducer is a crosslinked polymer, for example a crosslinked cationic polymer such as a polyacrylamide polymer. The high viscosity friction reducers are useful in a fracture well self-cleaning system without the need of a breaker.

Abstract: A deployable anti-fatigue mat for a stool includes a first portion flexibly joined to a second portion along a common edge, the first portion comprising a footrest secured thereto and the second portion being configured to be movably attached to a base of the stool.

Abstract: An embodiment includes a system comprising: a catheter; an optic fiber having a long axis and a short axis that is orthogonal to the long axis; first and second radiopaque elements coupled to the optic fiber; a first wire coupled to the optic fiber and extending from the first radiopaque element to the second radiopaque element; a fluid; wherein (a)(i) the first wire wraps at least partially around an exterior surface of the optic fiber; (a)(ii) an outer diameter of the first wire and an outer diameter of the optic fiber are collectively less than an inner diameter of the catheter, and (a)(iii) the first wire is configured to center the optic fiber within the catheter within a plane orthogonal to the long axis.

Abstract: A non-contact method of joining two components via direct heating of a thermoset adhesive includes applying the thermoset adhesive to at least a first component of the two components. The thermoset adhesive includes a susceptor to reacts in the presence of an electromagnetic field. The method includes placing the first component and a second component of the two components in proximity to an electromagnetic field. In some aspects, the method includes placing the first and second components in proximity to an electromagnetic field of a capacitor. The susceptor interacts with the electromagnetic field to heat the thermoset adhesive via resistive heating. In some aspects, a method of direct-contact heating of the thermoset adhesive includes attaching electrodes to a film comprising the adhesive. The components being joined together are not directly heated by the electromagnetic field, and as a result experience much lower temperatures than the thermoset adhesive.

Abstract: A system for providing tactile feedback to a user includes a device comprising a touch surface to be touched by the user, one or more thermal elements distributed across the touch surface of the device and configured to heat the touch surface and thereby modulate the friction between the user's skin and the touch surface, and a controller connected to the one or more thermal elements and configured to control the operation of the one or more thermal elements to provide a plurality of predefined temperature distributions across the touch surface.

Abstract: The present disclosure relates to anti-fibrotic sialidase-inhibitor compounds and methods of preventing or inhibiting fibrosis using such compounds. The present disclosure also relates to methods of controlling the formation of fibrocytes or their activity using such compounds. The compounds may include both antibodies as well as small molecules. The methods may involve administering the compounds to a patient with or at risk of developing fibrosis in a manner that inhibits at least one sialidase in the patient.

Abstract: A microfluidic device includes a microfluidic channel formed in the microfluidic device and defined by a floor and a ceiling positioned vertically above the floor, wherein the microfluidic channel includes at least one fluid inlet configured to receive a fluid flow and at least one fluid outlet, and wherein at least one of the ceiling and the floor of the microfluidic channel is sloped relative to a horizontal plane.

Abstract: A method of removing pollutants from flue gas includes cooling the flue gas to remove condensed water. The flue gas is then compressed and dehydrated. The dehydrated flue gas is chilled to separate pollutants.

Abstract: Provided herein are nanoengineered biomaterial inks used to 3D print a biocompatible, flexible electronic device, for example, a hydrogel constructs a biocompatible, flexible electronic device or 3D printed wearable electronic devices. The biocompatible, flexible electronic device may be a crosslinked gelatin-SH-2D-MoS2 nanoassembly. Also provided are methods for nanoengineering a biomaterial ink and for determining a treatment for a subject in need thereof utilizing the biocompatible, flexible electronic device.

Abstract: In an embodiment. the present disclosure pertains to environmental biospecimen recovery after in-droplet gel encapsulation (eBRIDGE) platforms for co-culturing multiple microorganisms in gel microspheres and then transferring single-cell-derived clonal populations from within the gel microspheres into separate water-in-oil emulsion droplets for further processing and analysis. In some embodiments. the gel-encapsulated bacteria are released by lysing the gel matrix using an enzyme. The methods of the present disclosure provide a single workflow that goes from environmental microbial harvesting and amplification to functional interrogation of their characteristics.

Abstract: A wearable biosensor for real-time quantification of a biomarker in a biofluid includes at least one functional module. The functional module includes an iontophoresis induction module, a microfluidic layer, a plurality of multimodal biosensors, and a paperfluidic layer.

Abstract: In an embodiment, the present disclosure pertains to a method of deposition of nanostructures with engineered patterns. In an additional embodiment, the present disclosure pertains to a method of preparing colloidal suspensions of hybrid nanoparticle systems (HNMS). In a further embodiment, the present disclosure pertains to a method of making a cellulose nanocrystal (CNC)-bonded carbon nanotube carbon fiber reinforced polymer (CNT-CFRP) hybrid composite. In another embodiment, the present disclosure pertains to a method of making a cellulose nanocrystal (CNC)-bonded graphene nanoplatelets (GNP) carbon fiber reinforced polymer (GNP-CFRP) hybrid composite. In a further embodiment, the present disclosure pertains to a method of making a hybrid cellulose nanocrystal (CNC)-graphene nanoplatelet(boron nitride nanobarb) (GNP-(BNNB))-carbon fiber (CF)Zpolyether ether ketone (PEEK) using spray-coating.

Abstract: A system for treating an aneurysm in a blood vessel or vein, wherein the aneurysm has a dome, an interior, and a neck. The system includes a shape memory polymer foam in the interior of the aneurysm between the dome and the neck. The shape memory polymer foam has pores that include a first multiplicity of pores having a first pore size and a second multiplicity of pores having a second pore size. The second pore size is larger than said first pore size. The first multiplicity of pores are located in the neck of the aneurysm. The second multiplicity of pores are located in the dome of the aneurysm.

Abstract: A hover-capable aircraft includes a body including a tubular strut, a first rotor assembly rotatably coupled to the body and positioned about the strut, wherein the first rotor assembly includes a first plurality of circumferentially-spaced blades, a first actuation assembly including a first plurality of electronically controlled actuators coupled to a first swashplate and configured to control the movement of the first swashplate relative to the body, and a control system coupled to the body and configured to control the first plurality of actuators, wherein the control system includes a cable extending through a passage formed in the tubular strut and in signal communication with the first plurality of actuators.