International Business Machines Corporation

Globalfoundries Inc.

Hugen Yan

Phaedon Avouris

Chun-Yung Sung

Fengnian Xia

Alberto V Garcia

Damon B Farmer

Yilei Li

Alberto Valdes Garcia

Techniques for forming nanoribbon or bulk graphene-based SPR sensors are provided. In one aspect, a method of forming a graphene-based SPR sensor is provided which includes the steps of: depositing graphene onto a substrate, wherein the substrate comprises a dielectric layer on a conductive layer, and wherein the graphene is deposited onto the dielectric layer; and patterning the graphene into multiple, evenly spaced graphene strips, wherein each of the graphene strips has a width of from about 50 nanometers to about 5 micrometers, and ranges therebetween, and wherein the graphene strips are separated from one another by a distance of from about 5 nanometers to about 50 micrometers, and ranges therebetween. Alternatively, bulk graphene may be employed and the dielectric layer is used to form periodic regions of differing permittivity. A testing apparatus and method of analyzing a sample using the present SPR sensors are also provided.

Chemical sensors based on plasmon resonance in graphene

Structures and methods for cloaking an object to electromagnetic radiation at the microwave and terahertz frequencies include disposing a plurality of graphene sheets about the object. Intermediate layers of a transparent dielectric material can be disposed between graphene sheets to optimize the performance. In other embodiments, the graphene can be formulated into a paint formulation or a fabric and applied to the object. The structures and methods absorb at least a portion of the electromagnetic radiation at the microwave and terabyte frequencies.

Graphene based structures and methods for broadband electromagnetic radiation absorption at the microwave and terahertz frequencies

Electromagnetic interference shielding structures and methods of shielding an object form electromagnetic radiation at frequencies greater than a megahertz generally include providing highly doped graphene sheets about the object to be shielded. The highly doped graphene sheets may have a dopant concentration greater than &#x3e;1e10cm, which is effective to reflect the electromagnetic radiation or a dopant concentration of 1e10cm&#x3e;n&#x3e;0 cm, which is effective to absorb the electromagnetic radiation.

Graphene based structures and methods for shielding electromagnetic radiation

Electromagnetic interference shielding structures and methods of shielding an object form electromagnetic radiation at frequencies greater than a megahertz generally include providing doped graphene sheets about the object to be shielded. The doped graphene sheets have a dopant concentration that is effective to reflect and/or absorb the electromagnetic radiation.

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Ossining, NY, United States of America

Hugen Yan