Abstract: In various embodiments functionalized graphene oxide(s) are provided that demonstrate improved antimicrobial activity, where the graphene oxide(s) are functionalized to increase carbon radical (.C) density.

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

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

Abstract: Methods and systems of fabrication of high resolution, high-throughput electrochemical sensing circuits on a substrate. High resolution electrochemical sensing circuits are printed by an effective additive technique to the substrate. Optionally, post-print annealing converts electrochemically inactive printed graphene into one that is electrochemically active. The printing can be by aerosol jet printing, but is not necessarily limited thereto. An example is inkjet printing and then the post-print annealing. Ink formulation would be adjusted for effectiveness with inkjet printing. Optionally biorecognition agents can be covalently bonded to the printed graphene for the purpose of electrochemical biosensing. High throughput fabrication of high-resolution graphene circuits (feature sizes in the tens of microns <50 ?m) for electrochemical biosensing is possible by chemical functionalization of the graphene surface with a biological agent.

Abstract: Articles, electronic devices and related methods of fabrication interfacing graphene with a gallium liquid metal alloy.

Abstract: Anhydrous liquid-phase exfoliation of germanium sulfide to provide few-layer germanium sulfide, as can be incorporated into electronic devices such as but not limited to batteries and cells comprising such materials.

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

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 method of bioactive molecule delivery includes providing a first aqueous medium comprising native graphene oxide and a second aqueous medium comprising a bioactive molecular component that includes Gd(III)-labeled molecules; mixing said first and second media to form a mixture thereof; co-incubating the mixture for a first period of time for coupling said molecular component on a surface of said native graphene oxide, to provide a co-incubation product; and contacting a cellular medium with said co-incubation product for a second period of time for cellular delivery of said bioactive molecular component.

Abstract: A memtransistor includes a top gate electrode and a bottom gate electrode; a polycrystalline monolayer film formed of an atomically thin material disposed between the top gate electrode and the bottom gate electrode; and source and drain electrodes spatial-apart formed on the polycrystalline monolayer film to define a channel in the polycrystalline monolayer film between the source and drain electrodes. The top gate electrode and the bottom gate electrode are capacitively coupled with the channel.

Abstract: A method of preparing a boron allotrope-organic lateral heterostructural article includes providing an article comprising a substrate comprising a portion thereof coupled to a boron allotrope comprising an elemental boron layer; generating an organic compound vapor from a solid organic compound source, said organic compound vapor having a higher enthalpy of adsorption on said substrate compared to enthalpy of adsorption on said boron allotrope; and contacting said organic compound vapor with said article to selectively deposit said organic compound on a substrate portion not coupled to said boron allotrope to provide a heterostructural article comprising said organic compound and said boron allotrope laterally adjacent one to the other and providing a lateral interface one with the other.

Abstract: Thermally activated memristors from solution-processed two-dimensional (2D) semiconductors, fabricating methods and applications of the same. The memristor includes a semiconductor film formed on a nanoporous membrane, and at least two electrodes spatial-apart formed on the semiconductor film and electrically coupled with the semiconductor film to define a channel in the semiconductor film between the at least two electrodes, where the channel has one or more filaments, one or more dendrite, or a combination of them formed in the semiconductor film. The underlying switching mechanism applies generally to a range of 2D semiconductors including, but not limited to, MoS2, MoSe2, WS2, ReS2, InSe, or related 2D semiconductor materials.

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: A composition includes a few-layer phosphorene nanomaterial comprising at least one of mono-, bi-, and n-layer phosphorene nanosheets, where n is an integer selected from 3 to 6; deoxygenated water; and at least one amphiphilic surface active component.

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: A composition includes a few-layer phosphorene nanomaterial comprising at least one of mono-, bi-, and n-layer phosphorene nanosheets, where n is an integer selected from 3 to 6; deoxygenated water; and at least one amphiphilic surface active component.

Abstract: A method of preparing an atomically-dimensioned elemental boron allotrope includes providing a substrate at a temperature greater than about 200° C.; generating elemental boron vapor from a solid elemental boron source; and contacting said substrate with said boron vapor for at least one of a rate and at a pressure sufficient to deposit on said substrate a boron allotrope comprising an elemental boron layer comprising a boron atomic thickness dimension, said method under negative pressure.