Washington University

University System of Maryland

George Mason University

Government of the United States of America, As Represented by the Secretary of Commerce

The United States of America As Represented by the Secretary of

Other

US Government As Represented by the Secretary of the Army

Mona Zaghloul

Albert V Davydov

Abhishek Motayed

Geetha Aluri

Vladimir P Oleshko

Mulpuri V Rao

Ritu Bajpai

Zhenyu Li

Onur Tigli

Ali Mohamed Darwish

Stephen Semancik

Guannan Liu

Ratan Debnath

Brian Thomson

Ting Xie

Quan Dong

Baomei Wen

Bowei Zhang

Kurt D Benkstein

Can E Korman

Hsu-Cheng Ou

Thomas J Farm

Anis Nurashikin Nordin

Boqun Dong

Yangyang Zhao

A device employing the generation and enhancement of surface acoustic waves on a highly doped p-type III-V semiconductor substrate (e.g., GaAs, GaSb, InAs, or InGaAs). The device includes two SiO/ZnO islands, each including a SiObuffer layer deposited on the doped p-type III-V semiconductor substrate and a ZnO layer deposited on the SiObuffer layer. An input interdigital transducers (IDT) and an output IDT are each patterned on one of the SiO/ZnO islands. The IDTs generates surface acoustic waves along an exposed surface of the highly doped p-type III-V semiconductor substrate. The surface acoustic waves improve the photoelectric and photovoltaic properties of the device. The device is manufactured using a disclosed technique for propagating strong surface acoustic waves on weak piezoelectric materials. Also disclosed is a photodetector developed using that technique.

Generation and enhancement of surface acoustic waves on a highly doped p-type III-V semiconductor substrate

A nanohole array (NHA)-based plasmonic sensor (e.g., gas/condensed phase sensor), their preparation, and their use to detect and analyze samples, especially mixtures of chemicals/bio-chemicals.

Nanohole array based sensors with various coating and temperature control

An electrocardiogram (ECG) sensor has a flexible thin ring-shaped substrate configured to be worn about a patient's finger. The substrate has an inner surface and an outer surface opposite the inner surface. A first ECG electrode is positioned at the outer surface of said substrate and a second ECG electrode is positioned at the inner (or outer) surface of the said substrate in contact with the finger (or the adjacent finger if the electrode is on the outer surface), whereby the two ECG electrodes receives a single-lead ECG signal when the first electrode is touched to the patient's body. Touching different locations on the body or wearing multiple rings can provide multi-lead ECG measurements. The ring shape can be converted to a wearable patch for continuous ECG measurements.

Electrocardiogram sensor ring

A nanostructure sensing device comprises a semiconductor nanostructure having an outer surface, and at least one of metal or metal-oxide nanoparticle clusters functionalizing the outer surface of the nanostructure and forming a photoconductive nanostructure/nanocluster hybrid sensor enabling light-assisted sensing of a target analyte.

Device having a array of sensors on a single chip

Method for manufacturing an array of sensors on a single chip

Device having an array of sensors on a single chip

Highly selective nanostructure sensors and methods of detecting target analytes

A flexible IC/microfluidic hybrid integration and packaging method and resulting device. A single flexible elastomer substrate, such as polydimethylsiloxane (PDMS), has dedicated microchannels filled with liquid metals (or low melting point solders) to provide electrical interconnects to a solid-state IC die, such as CMOS, and additional microchannels for hybrid integration with microfluidics without performing any post-processing on the IC die. The liquid metal used can be a gallium-indium-tin eutectic alloy (also called Galinstan).

Flexible IC/microfluidic integration and packaging

A surface acoustic wave resonator including an input interdigital transducer (IDT), an output IDT, and a pair of gratings with each being spaced from each other by a predetermined distance and attached to a substrate. In at least one embodiment, the distance is equal to one-half of the wavelength of the acoustic wave produced by the input IDT. In a further embodiment, the surface acoustic wave further includes a polymer layer and a biomedical coating covering at least a part of the polymer layer. The surface acoustic wave resonator has uses in the mass sensor and communications fields.

Synchronous one-pole surface acoustic wave resonator

An amplifier for an integrated circuit has a plurality of ratioed current mirrors connected to each other in a stacked configuration. Each ratio mirror has at least two resistors and at least two bipolar transistors connected to each other via said at least two resistors. Each amplifying transistor, contains a capacitor, and potentially and inductor, to internally match the transistors that make up the amplifying stack. DC, harmonic and s-parameter simulations are performed to provide an optimal impedance for each of the stacked transistors to maximize the RF power output of each stacked layer and the amplifier.

Bipolar stacked transistor architecture

The design, fabrication, post-processing and characterization of a novel SAW (Surface Acoustic Wave) based bio/chemical sensor in CMOS technology is introduced. The sensors are designed in AMI 1.5 &#x3bc;m 2 metal, 2 poly process. A unique maskless post processing sequence is designed and completed. The three post-processing steps are fully compatible with any CMOS technology. This allows any signal control/processing circuitry to be easily integrated on the same chip. ZnO is used as the piezoelectric material for the SAW generation. A thorough characterization and patterning optimization of the sputtered ZnO was carried out. The major novelties that are introduced in the SAW delay line features are: The embedded heater elements for temperature control, compensation and acoustic absorbers that are designed to eliminate edge reflections and minimize triple transit interference. Both of these attributes are designed by using the CMOS layers without disturbing the SAW performance.

Saw devices, processes for making them, and methods of use

The design, fabrication, post-processing and characterization of a novel circular design SAW (Surface Acoustic Wave) based bio/chemical sensor in CMOS technology is introduced. The sensors are designed in AMI 1.5 &#x3bc;m 2 metal, 2 poly process. A unique maskless post processing sequence is designed and completed. The three post-processing steps are fully compatible with any CMOS technology. This allows any signal control/processing circuitry to be easily integrated on the same chip. ZnO is used as the piezoelectric material for the SAW generation. A thorough characterization and patterning optimization of the sputtered ZnO was carried out. The major novelties that are introduced in the SAW delay line features are: The embedded heater elements for temperature control, compensation and acoustic absorbers that are designed to eliminate edge reflections and minimize triple transit interference. Both of these attributes are designed by using the CMOS layers without disturbing the SAW performance.

Circular surface acoustic wave (SAW) devices, processes for making them, and methods of use

Growing community of inventors

Bethesda, MD, United States of America

Mona Zaghloul