University System of Maryland

Beijing University of Technology

USA As Represented by Secretary of the Navy

The United States of America, As Represented by the Secretary, Department of Health and Human Services

Michael Sears Fuhrer

David Kurt Gaskill

Howard Dennis Drew

Andrei B Sushkov

Thomas E Murphy

Mohammad M Jadidi

Javed Khan

Jun Stephen Wei

Chang Liu

Mark Thomas Edmonds

Xinghan Cai

Romel Del Rosario Gomez

Herman Pandana

John Thery Hellerstedt

James Lee Richard Jessee Collins

Konrad Aschenbach

Dirac semimetals, methods for modulating charge carrying density and/or band gap in a Dirac semimetal, devices including a Dirac semimetal layer, and methods for forming a Dirac semimetal layer on a substrate are described.

Methods and structures for altering charge carrier density or bandgap of a topological Dirac semimetal layer

A new approach to graphene-enabled plasmonic resonant structures in the THz is demonstrated in a hybrid graphene-metal design in which the graphene acts as a gate-tunable inductor, and metal acts as a capacitive reservoir for charge accumulation. A large resonant absorption in graphene can be achieved using the metal-graphene plasmonic scheme, and the peak can approach 100% in an optimized device, ideal for graphene-based THz detectors. Using high mobility graphene (&#x3bc;&#x3e;50000 cmVs) will allow anomalously high resonant THz transmission (near 100%) through ultra-subwavelength graphene-filled metallic apertures at a resonance frequency that is gate tunable. This metal-graphene plasmonic scheme enables near perfect tunable THz filter or modulator.

Hybrid metal-graphene terahertz optoelectronic system with tunable plasmonic resonance and method of fabrication

A plasmon-enhanced terahertz graphene-based photodetector exhibits an increased absorption efficiency attained by utilizing a tunable plasmonic resonance in sub-wavelengths graphene micro-ribbons formed on SiC substrate in contact with an array of bi-metallic electrode lines. The orientation of the graphene micro-ribbons is tailored with respect to the array of sub-wavelengths bi-metallic electrode lines. The graphene micro-ribbons extend at the angle of approximately 45 degrees with respect to the electrode lines in the bi-metal electrodes array. The plasmonic mode is efficiently excited by an incident wave polarized perpendicular to the electrode lines, and/or to the graphene micro-ribbons. The absorption of radiation by graphene is enhanced through tunable geometric parameters (such as, for example, the width of the graphene micro-ribbons) and control of a carrier density in graphene achieved through tuning the gate voltage applied to the photodetector.

Plasmon-enhanced terahertz graphene-based photodetector and method of fabrication

A microarray apparatus is provided which contains at least one chip having source and drain electrodes positioned on an array of carbon nanotube transistors which allows for electronic detection of nucleic acid hybridizations, thereby affording both increased sensitivity and the capability of miniaturization.

Apparatus for microarray binding sensors having biological probe materials using carbon nanotube transistors

Growing community of inventors

Clayton, Australia

Michael Sears Fuhrer