Nova Medical Centers 500 N Capitol Ave, Indianapolis, IN 46204 3176310420 (phone), 3179835401 (fax)
Education:
Medical School Indiana University School of Medicine Graduated: 1971
Languages:
English Spanish
Description:
Dr. Marshall graduated from the Indiana University School of Medicine in 1971. He works in Indianapolis, IN and specializes in Emergency Medicine and Occupational Medicine.
Kenneth L. Marshall - Henrietta NY Tanya Z. Kosc - Rochester NY Stephen D. Jacobs - Pittsford NY Sadeg M. Faris - Pleasantville NY Le Li - Yorktown Heights NY
Assignee:
The University of Rochester - Rochester NY
International Classification:
C09K 1952
US Classification:
349166, 349 86, 359253, 359259
Abstract:
Flakes or platelets of polymer liquid crystals (PLC) or other birefringent polymers (BP) suspended in a fluid host medium constitute a system that can function as the active element in an electrically switchable optical device when the suspension is either contained between a pair of rigid substrates bearing transparent conductive coatings or dispersed as microcapsules within the body of a flexible host polymer. Optical properties of these flake materials include large effective optical path length, different polarization states and high angular sensitivity in their selective reflection or birefringence. The flakes or platelets of these devices need only a 3-20Â rotation about the normal to the cell surface to achieve switching characteristics obtainable with prior devices using particle rotation or translation.
Electrically Addressable Optical Devices Using A System Of Composite Layered Flakes Suspended In A Fluid Host To Obtain Angularly Dependent Optical Effects
Tanya Z. Kosc - Rochester NY Kenneth L. Marshall - Henrietta NY Stephen D. Jacobs - Pittsford NY
Assignee:
The University of Rochester - Rochester NY
International Classification:
G02F 113
US Classification:
359272, 359273, 349 16
Abstract:
Composite or layered flakes having a plurality of layers of different materials, which may be dielectric materials, conductive materials, or liquid crystalline materials suspended in a fluid host and subjected to an electric field, provide optical effects dependent upon the angle or orientation of the flakes in the applied electric field. The optical effects depend upon the composition and thickness of the layers, producing reflectance, interference, additive and/or subtractive color effects. The composition of layered flakes may also be selected to enhance and/or alter the dielectric properties of flakes, whereby flake motion in an electric field is also enhanced and/or altered. The devices are useful as active electro-optical displays, polarizers, filters, light modulators, and wherever controllable polarizing, reflecting and transmissive optical properties are desired.
Optical Devices Having Flakes Suspended In A Host Fluid To Provide A Flake/Fluid System Providing Flakes With Angularly Dependent Optical Properties In Response To An Alternating Current Electric Field Due To The Dielectric Properties Of The System
Tanya Z. Kosc - Rochester NY, US Kenneth L. Marshall - Rochester NY, US Stephen D. Jacobs - Pittsford NY, US
Assignee:
The University of Rochester - Rochester NY
International Classification:
G02F 1/13
US Classification:
359272, 354273, 349 16
Abstract:
Optical devices utilizing flakes (also called platelets) suspended in a host fluid have optical characteristics, such as reflective properties, which are angular dependent in response to an AC field. The reflectivity may be Bragg-like, and the characteristics are obtained through the use of flakes of liquid crystal material, such as polymer liquid crystal (PLC) materials including polymer cholesteric liquid crystal (PCLC) and polymer nematic liquid crystal (PNLC) material or birefringent polymers (BP). The host fluid may be propylene carbonate, poly(ethylene glycol) or other fluids or fluid mixtures having fluid conductivity to support conductivity in the flake/host system. AC field dependent rotation of 90 can be obtained at rates and field intensities dependent upon the frequency and magnitude of the AC field. The devices are useful in providing displays, polarizers, filters, spatial light modulators and wherever switchable polarizing, reflecting, and transmission properties are desired.
Intraoral Radiographic Dental X-Ray Packets Having Non-Lead Radiation Shielding
Michael R. McGovern - Rochester NY, US Kenneth J. Marshall - Brockport NY, US Carol A. Ryan - Macedon NY, US David J. Steklenski - Rochester NY, US
Assignee:
Carestream Healthcare, Inc. - Rochester NY
International Classification:
A61B 6/14
US Classification:
378169, 378168
Abstract:
An intraoral x-ray film packet, comprising: an outer envelope; a film chip disposed within the outer envelope; and a non-lead sheet disposed within the outer envelope, the non-lead sheet being comprised substantially of tin.
Method For Making Precisely Configured Flakes Useful In Optical Devices
Stephen D. Jacobs - Pittsford NY, US Tanya Z. Kosc - Rochester NY, US Kenneth L. Marshall - Rochester NY, US
Assignee:
University of Rochester - Rochester NY
International Classification:
B28B 7/32
US Classification:
264482, 264105, 2642978, 264219, 264313
Abstract:
Precisely configured, especially of geometric shape, flakes of liquid crystal material are made using a mechanically flexible polymer mold with wells having shapes which are precisely configured by making the mold with a photolithographically manufactured or laser printed master. The polymer liquid crystal is poured into the wells in the flexible mold. When the liquid crystal material has solidified, the flexible mold is bent and the flakes are released and collected for use in making an electrooptical cell utilizing the liquid crystal flakes as the active element therein.
Liquid Crystal Devices Especially For Use In Liquid Crystal Point Diffraction Interferometer Systems
Liquid crystal point diffraction interferometer (LCPDI) systems that can provide real-time, phase-shifting interferograms that are useful in the characterization of static optical properties (wavefront aberrations, lensing, or wedge) in optical elements or dynamic, time-resolved events (temperature fluctuations and gradients, motion) in physical systems use improved LCPDI cells that employ a “structured” substrate or substrates in which the structural features are produced by thin film deposition or photo resist processing to provide a diffractive element that is an integral part of the cell substrate(s). The LC material used in the device may be doped with a “contrast-compensated” mixture of positive and negative dichroic dyes.
Electrically Actuatable Doped Polymer Flakes And Electrically Addressable Optical Devices Using Suspensions Of Doped Polymer Flakes In A Fluid Host
Doped electrically actuatable (electrically addressable or switchable) polymer flakes have enhanced and controllable electric field induced motion by virtue of doping a polymer material that functions as the base flake matrix with either a distribution of insoluble dopant particles or a dopant material that is completely soluble in the base flake matrix. The base flake matrix may be a polymer liquid crystal material, and the dopants generally have higher dielectric permittivity and/or conductivity than the electrically actuatable polymer base flake matrix. The dopant distribution within the base flake matrix may be either homogeneous or non-homogeneous. In the latter case, the non-homogeneous distribution of dopant provides a dielectric permittivity and/or conductivity gradient within the body of the flakes. The dopant can also be a carbon-containing material (either soluble or insoluble in the base flake matrix) that absorbs light so as to reduce the unpolarized scattered light component reflected from the flakes, thereby enhancing the effective intensity of circularly polarized light reflected from the flakes when the flakes are oriented into a light reflecting state. Electro-optic devices contain these doped flakes suspended in a host fluid can be addressed with an applied electric field, thus controlling the orientation of the flakes between a bright reflecting state and a non-reflecting dark state.
A PCLC flake/fluid host suspension that enables dual-frequency, reverse drive reorientation and relaxation of the PCLC flakes is composed of a fluid host that is a mixture of: 94 to 99. 5 wt % of a non-aqueous fluid medium having a dielectric constant value ∈, where 110Siemens per meter (S/m), and a resistivity r, where 10>r>10ohm-meters (Ω-m), and which is optically transparent in a selected wavelength range Δλ; 0. 0025 to 0. 25 wt % of an inorganic chloride salt; 0. 0475 to 4. 75 wt % water; and 0. 25 to 2 wt % of an anionic surfactant; and 1 to 5 wt % of PCLC flakes suspended in the fluid host mixture. Various encapsulation forms and methods are disclosed including a Basic test cell, a Microwell, a Microcube, Direct encapsulation (I), Direct encapsulation (II), and Coacervation encapsulation. Applications to display devices are disclosed.
of House leadership in Peter Petrarca, but it was still a successful night for the Speaker of the House. His longtime rival Rene Menard was finally ousted from office and three other newcomers he openly supported (Katherine Kazarian, Kenneth Marshall and Marvin Abney) all won their primaries Tuesday.
Date: Sep 12, 2012
Source: Google
Police questioning Delray man about dead children found in canal
"He was very much into his kids. He loved his kids," said Beauchamp's friend and neighbor, Kenneth Marshall. Marshall said Beauchamp seemed like the kind of dad who could "work his kids like a drill sergeant" yet still clown around and play catch with them. He walked them to a bus stop near the corn