Abstract: Provided are aptamer-functionalized graphene sensors, capable of detecting various analytes, including toxins, at comparatively low concentrations. Also provided are methods of fabricating and using such aptamer-functionalized graphene sensors.

Abstract: The present invention provides methods for fabricating graphene workpieces. The present invention also provides for products produced by the methods of the present invention and for apparatuses used to perform the methods of the present invention.

Abstract: Provided are devices and methods for detecting a target molecule, based on using a graphene electrode. The devices exhibit high sensitivity to target molecules such as DNA that may be present at comparatively low concentrations.

Abstract: Provided are devices and methods for a rapid, non-perturbative and energy-efficient technique for pH sensing based on a flexible graphene electrode. This technique does not require the application of gate voltage or source-drain bias, and demonstrates fast pH-characterization with precision. The disclosed technology is suitable for in vivo monitoring of tumor-induced pH variation in tissues and detection of pH changes as required in a DNA sequencing system.

Abstract: The present invention provides methods for fabricating graphene workpieces. The present invention also provides for products produced by the methods of the present invention and for apparatuses used to perform the methods of the present invention.

Abstract: Provided are devices and methods for a rapid, non-perturbative and energy-efficient technique for pH sensing based on a flexible graphene electrode. This technique does not require the application of gate voltage or source-drain bias, and demonstrates fast pH-characterization with precision. The disclosed technology is suitable for in vivo monitoring of tumor-induced pH variation in tissues and detection of pH changes as required in a DNA sequencing system.

Abstract: The present invention provides methods for fabricating graphene workpieces. The present invention also provides for products produced by the methods of the present invention and for apparatuses used to perform the methods of the present invention.

Abstract: Provided are devices and methods featuring a nanoelectronic interface between graphene devices (for example, field effect transistors or FETs) and biomolecules such as proteins, which in turn provides a pathway for production of bioelectronic devices that combine functionalities of the biomolecular and inorganic components. In one exemplary application, one may functionalize graphene FETs with fluorescent proteins to yield hybrids that respond to light at wavelengths defined by the optical absorption spectrum of the protein. The devices may also include graphene in electronic communication with a bio-molecule that preferentially binds to a particular analyte.

Abstract: Provided are devices and methods featuring a nanoelectronic interface between graphene devices (for example, field effect transistors or FETs) and biomolecules such as proteins, which in turn provides a pathway for production of bioelectronic devices that combine functionalities of the biomolecular and inorganic components. In one exemplary application, one may functionalize graphene FETs with fluorescent proteins to yield hybrids that respond to light at wavelengths defined by the optical absorption spectrum of the protein. The devices may also include graphene in electronic communication with a biomolecule that preferentially binds to a particular analyte.

Abstract: Disclosed are devices that comprise a protein, such as an antibody, placed into electronic communication with a semiconductor material, such as a carbon nanotube. The devices are useful in assessing the presence or concentration of analytes contacted to the devices, including the presence of markers for prostate cancer and Lyme disease.

Abstract: Provided are electronic biosensors based on graphene field effect transistors that utilize engineered hairpin probe DNA that allows for target recycling and hybridization chain reactions.

Abstract: The present invention provides biomimetic sensor devices that utilize proteins—such G-protein coupled receptors—and are useful in high-sensitivity analysis of analyte-containing samples. These sensors may be used to determine the presence or concentration of one or more analytes in a sample. The invention also includes methods of fabricating the devices and methods of using the devices to assay samples.

Abstract: The present invention provides methods for fabricating graphene workpieces. The present invention also provides for products produced by the methods of the present invention and for apparatuses used to perform the methods of the present invention.

Abstract: Provided are aptamer-functionalized sensors, capable of detecting various analytes, including toxins, at comparatively low concentrations. Also provided are methods of fabricating and using such sensors.

Abstract: A method of fracturing a subterranean formation penetrated by a well comprises: combining an aqueous carrier with a superabsorbent polymer and a borated galactomannan to form a hydraulic fracturing composition; and pumping the hydraulic fracturing composition into the well.

Abstract: The present invention provides methods for fabricating graphene workpieces. The present invention also provides for products produced by the methods of the present invention and for apparatuses used to perform the methods of the present invention.

Abstract: Provided are devices and methods for a rapid, non-perturbative and energy-efficient technique for pH sensing based on a flexible graphene electrode. This technique does not require the application of gate voltage or source-drain bias, and demonstrates fast pH-characterization with precision. The disclosed technology is suitable for in vivo monitoring of tumor-induced pH variation in tissues and detection of pH changes as required in a DNA sequencing system.

Abstract: The present invention provides a broad response single-stranded DNA-graphene chemical sensor device. The present invention also provides methods for improving the ability of graphene to work as a chemical sensor by using single-stranded DNA as a sensitizing agent.

Abstract: The present invention provides methods for fabricating graphene workpieces. The present invention also provides for products produced by the methods of the present invention and for apparatuses used to perform the methods of the present invention.

Abstract: The present invention provides methods for fabricating graphene workpieces. The present invention also provides for products produced by the methods of the present invention and for apparatuses used to perform the methods of the present invention.