Abstract: The invention relates to a sterilizable and reusable ultraviolet-resistant elastomer composites including an elastomeric matrix comprising at least one elastomer; and an UV-resistant additive incorporated into the elastomeric matrix. The ultraviolet-resistant elastomer composite remains mechanically robust over at least 150 sterilization cycles, enabling safe reuse following ultraviolet germicidal irradiation (UVGI). Beyond N95 masks, these UVGI-compatible ultraviolet-resistant elastomer composites have potential utility in other PPE applications to address the broader issue of single-use waste.

Abstract: One aspect of the invention relates to a multi-terminal memtransistor. The memtransistor includes a substrate having a first surface and an opposite, second surface, a polycrystalline monolayer film formed of an atomically thin material on the first surface of the substrate, an electrode array having a plurality of electrodes spatial-apart formed on the polycrystalline monolayer film such that each pair of electrodes defines a channel in the polycrystalline monolayer film therebetween, and a gate electrode formed on the second surface of the substrate and capacitively coupled with the channel. The polycrystalline monolayer film contains grains defining a plurality of grain boundaries thereof. The multi-terminal memtransistor operates much like a neuron by performing both memory and information processing, and can be a foundational circuit element for new forms of neuromorphic computing.

Abstract: The present teachings provide methods for providing populations of single-walled carbon nanotubes that are substantially monodisperse in terms of diameter, electronic type, and/or chirality. Also provided are single-walled carbon nanotube populations provided thereby and articles of manufacture including such populations.

Abstract: Composites comprising anode and cathode active materials conformally coupled to few-layered graphene, corresponding electrodes and related methods of preparation.

Abstract: Thermal management composites and scaffolds for heat-generating implantable electronic devices made from the thermal management composites are provided. The composite materials are cytocompatible, porous materials that include hexagonal boron nitride particles dispersed in an elastomeric polymer binder.

Abstract: Printable inks based on a 2D semiconductor, such as MoS2, and its applications in fully inkjet-printed optoelectronic devices are disclosed. Specifically, percolating films of MoS2 nanosheets with superlative electrical conductivity (10-2 s m?1) are achieved by tailoring the ink formulation and curing conditions. Based on an ethyl cellulose dispersant, the MoS2 nanosheet ink also offers exceptional viscosity tunability, colloidal stability, and printability on both rigid and flexible substrates. Two distinct classes of photodetectors are fabricated based on the substrate and post-print curing method. While thermal annealing of printed devices on rigid glass substrates leads to a fast photoresponse of 150 ?s, photonically annealed devices on flexible polyimide substrates possess high photoresponsivity exceeding 50 mA/W.

Abstract: A heterostructure ionogel electrolyte includes a first electrolyte comprising a first ionic liquid and a matrix; and a second electrolyte comprising a second ionic liquid and the matrix, wherein the first ionic liquid is a high-potential ionic liquid, the second ionic liquid is a low-potential ionic liquid, and the matrix comprises nanoplatelets/nanosheets; and wherein the first electrolyte and the second electrolyte are assembled to define a heterointerface therebetween.

Abstract: A composite and an electrode made of the same. The composite includes nanoparticles of an active material, said nanoparticles being surface refined by a post-synthetic annealing treatment to remove or minimize surface impurities thereon; and conformal graphene coating on each surface of said nanoparticles.

Abstract: In one aspect of the invention, a dye sensitized solar cell has a counter-electrode including carbon-titania nanocomposite thin films made by forming a carbon-based ink; forming a titania (TiO2) solution; blade-coating a mechanical mixture of the carbon-based ink and the titania solution onto a substrate; and annealing the blade-coated substrate at a first temperature for a first period of time to obtain the carbon-based titania nanocomposite thin films. In certain embodiments, the carbon-based titania nanocomposite thin films may include solvent-exfoliated graphene titania (SEG-TiO2) nanocomposite thin films, or single walled carbon nanotube titania (SWCNT-TiO2) nanocomposite thin films.

Abstract: A composite, an anode electrode for an electrochemical device including said composite, and a fabricating method of said composite. Said composite includes graphene and nanoparticles of an active material, wherein said nanoparticles are conformally coated and networked by said graphene.

Abstract: A composition for producing electrodes for lithium-sulfur batteries includes particles having a metal-organic framework structure and composition that define voids within the metal-organic framework structure; sulfur loaded into at least some of the voids defined by the metal-organic framework structure of the particles; graphene flakes obtained by polymer enhanced solvent exfoliation; and polymer residue from the polymer enhanced solvent exfoliation. A method of producing a composite electrode for a lithium-sulfur battery according to an embodiment of the current invention includes obtaining a composition according to an embodiment of the current invention and applying the composition to a substrate. An electrode for a lithium-sulfur battery includes a layer having the composition. A lithium-sulfur battery according to an embodiment of the current invention includes the electrode.

Abstract: Systems and methods for preparing covalent organic framework (COF) thin films is disclosed herein. The systems and method utilize COF colloidal inks, having a diameter of 10-1000 nm, expelled through a nozzle onto a substrate to prepare the COF thin film. The plurality of COF colloidal ink droplets have an effective deposition diameter from the nozzle onto a masked or unmasked substrate, where the substrate may be heated to an effective COF deposition temperature.

Abstract: Preparation of two-dimensional indium selenide, other two-dimensional materials and related compositions via surfactant-free deoxygenated co-solvent systems.

Abstract: A method for fabricating a composite material includes forming an emulsion mixture of active material particles and graphene emulsion droplets containing immiscible first and second solvents and a solid-state emulsifier of graphene, wherein the first and second solvents are adapted such that the second solvent resides in an interior of the graphene emulsion droplets with the first solvent as an exterior solvent, and the active material particles reside in the interior of the emulsion droplets; wherein a boiling point of the second solvent is lower than that of the first solvent; and drying the emulsion mixture with subsequent evaporation of the second solvent and the first solvent through fractional distillation to form the composite material having each surface of the active material particles conformally coated with said graphene.

Abstract: In one aspect of the invention, a dye sensitized solar cell has a counter-electrode including carbon-titania nanocomposite thin films made by forming a carbon-based ink; forming a titania (TiO2) solution; blade-coating a mechanical mixture of the carbon-based ink and the titania solution onto a substrate; and annealing the blade-coated substrate at a first temperature for a first period of time to obtain the carbon-based titania nanocomposite thin films. In certain embodiments, the carbon-based titania nanocomposite thin films may include solvent-exfoliated graphene titania (SEG-TiO2) nanocomposite thin films, or single walled carbon nanotube titania (SWCNT-TiO2) nanocomposite thin films.

Abstract: Preparation of two-dimensional indium selenide, other two-dimensional materials and related compositions via surfactant-free deoxygenated co-solvent systems.

Abstract: One aspect of this invention relates to hexagonal boron nitride (hBN) ionogel inks using exfoliated hBN nanoplatelets as the solid matrix. The hBN nanoplatelets are produced from bulk hBN powders by liquid-phase exfoliation, allowing printable hBN ionogel inks to be formulated following the addition of an imidazolium ionic liquid and ethyl lactate. The resulting inks are reliably printed with variable patterns and controllable thicknesses by aerosol jet printing, resulting in hBN ionogels that possess high room-temperature ionic conductivities and storage moduli of >3 mS cm-1 and >1 MPa, respectively. By integrating the hBN ionogel with printed semiconductors and electrical contacts, fully-printed thin-film transistors with operating voltages below 1 V are demonstrated on polyimide films. These devices exhibit desirable electrical performance and robust mechanical tolerance against repeated bending cycles, thus confirming the suitability of hBN ionogels for printed and flexible electronics.

Abstract: The present teachings provide methods for providing populations of single-walled carbon nanotubes that are substantially monodisperse in terms of diameter, electronic type, and/or chirality. Also provided are single-walled carbon nanotube populations provided thereby and articles of manufacture including such populations.

Abstract: A self-aligned short-channel SASC electronic device includes a first semiconductor layer formed on a substrate; a first metal layer formed on a first portion of the first semiconductor layer; a first dielectric layer formed on the first metal layer and extended with a dielectric extension on a second portion of the first semiconductor layer that extends from the first portion of the first semiconductor layer, the dielectric extension defining a channel length of a channel in the first semiconductor layer; and a gate electrode formed on the substrate and capacitively coupled with the channel. The dielectric extension is conformally grown on the first semiconductor layer in a self-aligned manner. The channel length is less than about 800 nm, preferably, less than about 200 nm, more preferably, about 135 nm.

Abstract: One aspect of the invention relates to an ionogel electrolyte ink including an ionic liquid; and a gelling matrix material. The gelling matrix material is mixed with the ionic liquid in at least one solvent.