Tsi, Inc.

Other

New Jersey Institute of Technology

Aerosol Dynamics Inc.

Kenneth Rudolph Farmer, Ii

Frederick R Quant

Steven G Buckley

Susanne Vera Hering

Gregory Stephen Lewis

Robert Caldow

Hee-Siew Han

Richard Remiarz

Arantzazu Eiguren Fernandez

William Dick

Timothy Russell

Darrick L Niccum

Harry Roman

Erik Stockinger

Xiaodong Wang

Baoqing Li

Nathan T Birkeland

Phillip V Tan

Nathaniel Rudolph Farmer

Christopher B Stipe

Daniel Jensen

A measurement system includes an atomizer, an impactor, a particle counter, and a discharge reservoir. The atomizer has a liquid intake port and a gas intake port configured to aerosolize a liquid received at the liquid intake port. The impactor has an inlet coupled to the atomizer and has a first output port and a second output port. The impactor is configured to separate droplets wherein those droplets smaller than a selected cut point are directed to the first output port and those droplets larger than the selected cut point are directed to the second output port. The particle counter is coupled to the first output port and is configured to count particles larger than at least one particle size cut point. The discharge reservoir is coupled to the second output port.

Aerosol-based liquid particle detection measurement

The respirator fit monitor described herein can be worn continuously by users so as to provide an indication as to how well their masks are fitting during use, thereby providing quantitative, wearable fit testers available for continuous use in real-life situations. The monitor includes a low-cost optical particle sensor assembly and controller unit for performing mask fit tests by comparing particle concentrations inside and outside of the mask. The fit test monitor is low cost and wearable, capable of dual sampling, capable of fit factor ratios well above 100, is battery powered and provides near real time measurements with a means for indicating the fit of the mask. The system includes wired or wireless communications for data logging, analysis and display capabilities.

Wearable mask fit monitor

A system and a method is described herein for the collection of small particles in a concentrated manner, whereby particles are deposited onto a solid surface or collected into a volume of liquid. The collected samples readily interface to any of a number of different elemental, chemical, or biological or other analysis techniques.

System and method for the concentrated collection of airborne particles

A laser-based spectroscopy system that combines a distance/proximity standoff sensor, a high-repetition rate laser spectroscopy system, and software with a decision-making algorithm embedded in a processing unit which in combination performs selective firing of the laser when the target object is within an interrogation zone. In a related embodiment, the system provides selective sorting of spectroscopic signals based on information from the standoff signal and from information contained in the spectral signals themselves. The laser emission can be actively controlled while keeping the laser firing, thereby preserving the thermal stability and hence the power of the laser; and the standoff sensor information and the spectral information can be combined to determine the proper relative weighting or importance of each piece of spectral information.

High speed spectroscopic sensor assembly and system

A novel device, method and systems disclosed managing the thermal challenges of LIBS laser components and a spectrometer in a handheld structure as well the use of simplified light signal collection which includes a bare fiber optic to collect the emitted light in close proximity to (or in contact with) the test material. In one example embodiment of the handheld LIBS device, a burst pulse frequency is 4 kHz is used resulting in a time between pulses of about 250 &#x3bc;s which is a factor of 10 above that of other devices in the prior art. In a related embodiment, an active Q-switched laser module is used along with a compact spectrometer module using a transmission grating to improve LIBS measurement while substantially reducing the size of the handheld analyzer.

Handheld laser induced breakdown spectroscopy device

An approved method and apparatus for detecting partial discharge events within a transformer comprises asserting a MEMS acoustical probe through the wall of the transformer to optically measure partial discharge events. In an enhanced embodiment, temperature compensation is also possible, and detection may be confirmed via an independent electromagnetic or other sensor.

Online fiber optic sensor for detecting partial discharge and similar events in large utility station transformers and the like

The present invention relates to a tunnel barrier and to uses thereof, particularly in conjunction with devices and integrated circuits fabricated with silicon substrates, and including the preparation of tunnel diodes, dielectric structures, transistors, memory cells and the products embodying one or more of the same. The tunnel barrier of the invention is designed to confer effective and reliable charge transfer performance, and is particularly well suited for the fabrication of nonvolatile memory cells. In an embodiment of the invention, with the barrier incorporated in a diode, the present evacuee facilitates over 10,bi-directional charge transfers across the barrier without destroying it. The multiple layer nature of the barrier, coupled with the use of direct tunnel oxides, provides desirable functionality, stability, and resistance to dielectric degradation, thus improving operating, storage and retention characteristics over conventional nonvolatile devices.

Multi-layer charge injection barrier and uses thereof

Growing community of inventors

Lake Elmo, MN, United States of America

Kenneth Rudolph Farmer, Ii