William Marsh Rice University

Ben-gurion University of the Negev Research and Development Authority

Texting Tip LLC

Yieu Chyan

James Mitchell Tour

Jordan S Miller

Yilun Li

Christopher John Arnusch

Savannah Ashley Cofer

Ian Kinstlinger

Carter Kittrell

Duy X Luong

Ruquan Ye

Swatantra Pratap Singh

Steven E Presutti

Michael G Stanford

John T Li

Junwei Sha

Brian Atlas

Methods that expand the properties of laser-induced graphene (LIG) and the resulting LIG having the expanded properties. Methods of fabricating laser-induced graphene from materials, which range from natural, renewable precursors (such as cloth or paper) to high performance polymers (like Kevlar). With multiple lasing, however, highly conductive PEI-based LIG could be obtained using both multiple pass and defocus methods. The resulting laser-induced graphene can be used, inter alia, in electronic devices, as antifouling surfaces, in water treatment technology, in membranes, and in electronics on paper and food Such methods include fabrication of LIG in controlled atmospheres, such that, for example, superhydrophobic and superhydrophilic LIG surfaces can be obtained. Such methods further include fabricating laser-induced graphene by multiple lasing of carbon precursors. Such methods further include direct 3D printing of graphene materials from carbon precurors. Application of such LIG include oil/water separation, liquid or gas separations using polymer membranes, anti-icing, microsupercapacitors, supercapacitors, water splitting catalysts, sensors, and flexible electronics.

Methods of fabricating laser-induced graphene and compositions thereof

Three-dimensional (3D) printing of graphene materials and methods and apparatuses for making same. In some embodiments, combined metal powder and carbon growth sources (such as powder Ni and sucrose) are utilized in the 3D printing process. In other embodiments, metal powders with binders (such as powder Ni and a polymer bases binder) are utilized in the 3D printing process. The metal in the resulting 3D printed composite material can then be etched or otherwise removed yielding the 3D printed graphene materials.

Three-dimensional (3D) printing of graphene materials

Virus and microbe-killing, self-sterilizing resistive heated air filters and methods of making and using same methods. The air filter is includes laser-induced graphene (LIG), a porous conductive graphene foam formed through photothermal conversion of a polyimide film (or another source or source of polymer or other LIG precursor material) by a laser source. The LIG in the air filter can capture particulates and bacteria. The bacteria cannot proliferate even when submerged in culture medium. Through a periodic Joule-heating mechanism, the filter easily reaches greater than 300° C. This destroys any microorganisms including bacteria, along with molecules that can cause adverse biological reactions and diseases such as viruses, pyrogens, allergens, exotoxins, endotoxins, teichoic acids, mycotoxins, nucleic acids, and prions.

Laser-induced graphene filters and methods of making and using same

Methods that expand the properties of laser-induced graphene (LIG) and the resulting LIG having the expanded properties. Methods of fabricating laser-induced graphene from materials, which range from natural, renewable precursors (such as cloth or paper) to high performance polymers (like Kevlar). With multiple lasing, however, highly conductive PEI-based LIG could be obtained using both multiple pass and defocus methods. The resulting laser-induced graphene can be used, inter alia, in electronic devices, as antifouling surfaces, in water treatment technology, in membranes, and in electronics on paper and food Such methods include fabrication of LIG in controlled atmospheres, such that, for example, superhydrophobic and superhydrophilic LIG surfaces can be obtained. Such methods further include fabricating laser-induced graphene by multiple lasing of carbon precursors. Such methods further include direct 3D printing of graphene materials from carbon precursors. Application of such LIG include oil/water separation, liquid or gas separations using polymer membranes, anti-icing, microsupercapacitors, supercapacitors, water splitting catalysts, sensors, and flexible electronics.

Disclosed is an elastic-fit fingernail-attached stylus, held to the end-portion of the user's fingernail (or to a fingernail extension) principally by an elastic fit around the fingernail/extension. The portion of the sleeve on the underside of the fingernail/extension includes a substantially transverse extension pointing in the direction of the user's fingertip and is designed to contact the flesh of the user's finger, when in use. A substantially spherical projection is on the opposite side of the sleeve with the forward most portion of the sphere and is designed to make contact with the touchscreen (or the keys of the touchscreen keyboard). The stylus is preferably formed of an elastomer, e.g., a silicone rubber composition, preferably including a conducting material.

Fingernail tip stylus

Growing community of inventors

Houston, TX, United States of America

Yieu Chyan