U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Patents

Displaying 251 - 271 of 271

Method And Apparatus For Carbon Nanotube Alignment

NIST Inventors
Jeffrey Fagan
Embodiments of the disclosure provide for machine-vision automation and parallelization to simultaneously produce globally-aligned SWCNT films from an aqueous solution using pressure-driven filtration. Feedback control enables filtration to occur with a constant flow rate that not only improves the

A Method Of Mode Identification In Photonic Resonator

NIST Inventors
Zeeshan Ahmed
We describe a method for distinguishing optical modes of a resonator based on the characterization of the temperature sensitivity of a mode’s resonance frequency and its dispersion characteristics. This method requires an interrogator (made up of a tunable laser, broadband light source, frequency

Method And Process For Tantala Integrated Nonlinear Photonics

NIST Inventors
Scott Papp , David Carlson and Kartik Srinivasan
Integrated photonics that enable nonlinear optical processes are important for numerous applications, including precision metrology; microresonator frequency comb generation; optical signal generation and processing; sensing, positioning, and navigation; and generation and manipulation of quantum

Multiplexed Amplitude Modulation Fluorometry

NIST Inventors
Anthony J. Kearsley , Gregory A Cooksey and Paul Patrone
Improving accuracy of cytometers is challenging because optical configuration, flow control methods, and calibration issues make it difficult to characterize geometric factors associated with signal collection. State-of-the-art tools only collect a small solid angle of emitted light, so that minor

Nanotube Spectrometer Array And Making A Nanotube Spectrometer Array

NIST Inventors
Ming Zheng
This invention discloses a design of an array of micron-sized spectrometer units that can measure the spectrum of incoming light in the wavelength range of 200 nm to 2000 nm, with a spatial resolution comparable to the size of a single spectrometer unit. Each spectrometer unit is composed of a set

Physiologically Stable Fluorophore For Digestion Toxicology Studies

NIST Inventors
Jeremiah Woodcock and Professor Douglas M. Fox
The diversity of materials used industrially has been increasing, as well as the demand for more renewable feed stocks. As a result, new strategies to assay the impact on the environment and human physiology is needed. Typical methods involving radioactive isotopic labeling and fluorescent labeling

Qubit Gate And Producing A Generalized Controlled-Not Quantum Gate

NIST Inventors
Adam Kaufman and Alexey Gorshkov
Electric dipoles such as Rydberg atoms and polar molecules are among the most promising candidates for building a quantum computer. We propose a protocol that uses long-range dipole-dipole interactions in these systems to quickly implement a generalized controlled-not (CNOT) quantum gate, in which

Serial Cytometry

NIST Inventors
Gregory A Cooksey , Paul Patrone and Anthony J. Kearsley
Flow cytometers can make thousands of single-cell measurements per second, but the limited ability to quantify uncertainty in individual measurements reduces their effectiveness for characterizing biomarker distributions, discriminating cell populations, and detecting rare events. To facilitate

Superconducting Vortex-Based Microwave Circulator

NIST Inventors
Jacob Taylor
This invention consists of a design model of a microwave circulator reliant on the motion of a single persistent-current vortex in a small superconducting circuit of Josephson junctions to induce nonreciprocal behavior. The model indicates the capability of enabling a small-scale, moderate-bandwidth

System And Method For Data Analysis In Quantitative PCR Measurements

NIST Inventors
Anthony J. Kearsley , Paul Patrone , Erica Romsos and Peter M. Vallone
In quantitative polymerase chain-reaction (qPCR) measurements, accurately subtracting background signals, quantifying the amount of DNA, and ensuring fidelity of data analysis and diagnostic tests is challenging. Such problems are especially acute for emerging / novel diseases that lack thoroughly

System And Method For Monitoring Ultraviolet Radiation Bioremediation

NIST Inventors
Yaw S. Obeng
Healthcare-associated infections (HAIs) impose great burdens on public health; they are probably some of the toughest and the most pressing healthcare problems in acute-care hospitalization. Ultraviolet-C illumination effectively decontaminate surfaces to reduce the population of many HAI-inducing

Timing-Based Computer Architecture Systems And Methods

NIST Inventors
Advait Madhavan , Mark D. Stiles and Matthew Daniels
Tropical algebra is an emerging field of mathematics concerned with graph theory, control theory, and certain optimization problems, especially in discrete event systems. We developed a novel computer circuit called a tropical state machine that uses signal timing and the physics of nanodevices to

Wireless Fire Hose Flow Rate Apparatus And Measuring Flow Rate In A Fire Hose

NIST Inventors
Gregory W. Vogl , Wai Cheong Tam and Christopher U Brown
A wireless sensor network was used to measure water-flow rate in a fire hose. An accelerometer was chosen as the sensor to measure the flow rate based on the vibrations generated by water flowing through a fire hose close to the hose nozzle. These sensors are small, lightweight, and can attach to
Displaying 251 - 271 of 271
Was this page helpful?