Zachary Levine

6389101, May 14, 2002

May 24, 2000

09/578115

Zachary H. Levine - Rockville MD
I. C. Edmond Turcu - Del Mar CA

JMAR Research, Inc. - Santa Clara CA

G21K 106

378 85, 378145

A parallel nanotomography imaging system is provided having an x-ray source, which is preferably a laser-based x-ray source that generates x-rays that are collected using a collector optic and are received in a composite objective assembly. The composite objective assembly includes plural micro-objectives, each imaging the target. The x-ray image is received by an x-ray image formation and acquisition apparatus, and processed and/or displayed.

7163649, Jan 16, 2007

Jul 9, 2002

10/190625

John H. Burnett - Washington DC, US
Zachary H. Levine - Rockville MD, US
Eric L. Shirley - Germantown MD, US

The United States of America as represented by the Secretary of Commerce - Washington DC

G02B 5/20
C01B 9/08
C02F 1/00

252584, 252585, 252588, 423464, 359321, 359885

A composition formed from Group II fluorides in which the composition has little or no intrinsic birefringence at a selected wavelength. The composition is a mixed solid solution of CaFwith a second crystal of SrFor BaF. The resulting composition is in the form of CaSrFor CaBaF, or a combination of SrFand BaF, in the form of CaSrBaF. The specific form of the composition that effectively nulls out the intrinsic birefringence at a selected wavelength within the UV range is determined in one preferred method from the magnitudes of the intrinsic birefringences of the components, CaF, SrF, and BaF.

7967507, Jun 28, 2011

Mar 5, 2009

12/380930

Zachary H. Levine - Gaithersburg MD, US
Steven Grantham - Gaithersburg MD, US

The United States of America as represented by the Secretary of Commerce, NIST - Washington DC

G01D 18/00

378207, 378163, 378205

A dimensional reference system for tomography, including X-ray computed tomography and MRI tomography. The system includes a dimensional reference apparatus that comprises plurality of spheres composed of a material having an X-ray absorption property between approximately +500 Hounsfield units and +1200 Hounsfield units. The spheres are spaced apart at a known distance by support structure/spacer unit that has an X-ray absorption property between approximately −100 Hounsfield units and +400 Hounsfield units. After an image that incorporates the dimensional reference apparatus and a measurement subject has been reconstructed, the dimensional reference apparatus provides for measurement of the resultant image voxels in three dimensions. Because solid structural elements such as plastic or glass spheres may not be visible in an MRI, an MRI implementation of the apparatus may be disposed in a fluid-tight enclosure along with water, a contrast-enhancing agent and ethanol.

20220309626, Sep 29, 2022

Mar 22, 2022

17/700884

- Gaithersburg MD, US
Zachary Howard Levine - Rockville MD, US

G06T 5/00
G06T 1/00

Removing diffraction effects in a tomographic image includes: obtaining an empirical image of a sample; producing an initial wave at a radiation source; forward propagating the initial wave from the radiation source toward a detector; receiving by a sample the initial wave; forward propagating the initial wave through the sample and accumulating phase and amplitude information to produce a phase accumulated wave; back propagating the phase accumulated wave; and forward propagating the phase accumulated wave while treating Fresnel diffraction, such that the empirical image is reconstructed by projections and diffraction via maximum likelihood, a Bayesian prior probability distribution, and a Fresnel propagator.

20180010997, Jan 11, 2018

Jun 26, 2017

15/632621

- Gaithersburg MD, US
ZACHARY H. LEVINE - ROCKVILLE MD, US

G01N 15/14
H05H 3/04
G01N 15/10
G02B 17/00
G01N 15/00

A process for optically sorting a plurality of particles includes: providing a particle receiver; producing particles; receiving the particles by the particle receiver; receiving a light by the particle receiver; producing a standing wave optical interference pattern in an optical interference site of the particle receiver from the light; subjecting the particles to an optical gradient force from the standing wave optical interference pattern; deflecting the particles into a plurality of deflected paths to form the sorted particles from the particles; and propagating the sorted particles from the optical interference site through the deflected paths to optically sort the particles