10 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Optical Microscopy"  
Results: 1 - 10
open access

Nonlinear optical microscopy for imaging thin films and surfaces

Description: We have used the inherent surface sensitivity of second harmonic generation to develop an instrument for nonlinear optical microscopy of surfaces and interfaces. We have demonstrated the use of several nonlinear optical responses for imaging thin films. The second harmonic response of a thin film of C{sub 60} has been used to image patterned films. Two photon absorption light induced fluorescence has been used to image patterned thin films of Rhodamine 6G. Applications of nonlinear optical micr… more
Date: March 1, 1995
Creator: Smilowitz, L. B.; McBranch, D. W. & Robinson, J. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

An image cancellation approach to depth-from-focus

Description: Depth calculation of an object allows computer reconstruction of the surface of the object in three dimensions. Such information provides human operators 3D measurements for visualization, diagnostic and manipulation. It can also provide the necessary coordinates for semi or fully automated operations. This paper describes a microscopic imaging system with computer vision algorithms that can obtain the depth information by making use of the shallow depth of field of microscopic lenses.
Date: March 1, 1995
Creator: Lu, Shin-yee & Graser, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Measurements and characterization - Analytical microscopy

Description: This brochure presents the capabilities that the Measurements and Characterization Division has in Analytical Microscopy, in which a variety of sophisticated techniques are used to study a material's topographical, crystallographic, structural, chemical, and luminescence properties.
Date: March 16, 2000
Creator: Cook, G.
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

DOE/NNSA/DE-FG03-03NA00069 Annual Report 1

Description: OAK-B135 This project was undertaken to enhance our understanding and control of the response of ductile materials to extreme loading conditions such as those involved in impact loading. The project was designed with a focus on the role of friction in high rate deformation and shock studies. The work involves collaboration of the tribology group in Materials Science and Engineering at OSU and two groups at LANL, an impact loading group in the dynamic experimentation division and a computer simu… more
Date: March 13, 2004
Creator: Rigney, David A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Thermal annealing of laser damage precursors on fused silica surfaces

Description: Previous studies have identified two significant precursors of laser damage on fused silica surfaces at fluenes below {approx} 35 J/cm{sup 2}, photoactive impurities in the polishing layer and surface fractures. In the present work, isothermal heating is studied as a means of remediating the highly absorptive, defect structure associated with surface fractures. A series of Vickers indentations were applied to silica surfaces at loads between 0.5N and 10N creating fracture networks between {appr… more
Date: March 19, 2012
Creator: Shen, N.; Miller, P. E.; Bude, J. D.; Laurence, T. A.; Suratwala, T. I.; Steele, W. A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Investigations of Localized Corrosion of Stainless Steel after Exposure to Supercritical CO2

Description: Severe localized corrosion of a 316 stainless steel autoclave occurred during investigating Type H Portland cement stability in 0.16 M CaCl{sub 2} + 0.02 M MgCl{sub 2} + 0.82 M NaCl brine in contact with supercritical CO{sub 2} containing 4% O{sub 2}. The system operated at 85 C and pressure of 29 MPa. However, no corrosion was observed in the same type of autoclave being exposed to the same environment, containing Type H Portland cement cylindrical samples, also operating at pressure of 29 MPa… more
Date: March 11, 2012
Creator: Ziomek-Moroz, M.; O’Connor, W. & Bullard, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A High Temperature Electrochemical Energy Storage System Based on Sodium Beta-Alumina Solid Electrolyte (Base)

Description: This report summarizes the work done during the period September 1, 2005 and March 31, 2008. Work was conducted in the following areas: (1) Fabrication of sodium beta{double_prime} alumina solid electrolyte (BASE) using a vapor phase process. (2) Mechanistic studies on the conversion of {alpha}-alumina + zirconia into beta{double_prime}-alumina + zirconia by the vapor phase process. (3) Characterization of BASE by X-ray diffraction, SEM, and conductivity measurements. (4) Design, construction a… more
Date: March 31, 2008
Creator: Virkar, Anil
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Intensity-based signal separation algorithm for accuratequantification of clustered centrosomes in tissue sections

Description: Centrosomes are small organelles that organize the mitoticspindle during cell division and are also involved in cell shape andpolarity. Within epithelial tumors, such as breast cancer, and somehematological tumors, centrosome abnormalities (CA) are common, occurearly in disease etiology, and correlate with chromosomal instability anddisease stage. In situ quantification of CA by optical microscopy ishampered by overlap and clustering of these organelles, which appear asfocal structures. CA has … more
Date: March 8, 2006
Creator: Fleisch, Markus C.; Maxell, Christopher A.; Kuper, Claudia K.; Brown, Erika T.; Parvin, Bahram; Barcellos-Hoff, Mary-Helen et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Process Development and Basic Studies of Electrochemically Deposited CdTe-Based Solar Cells: Final Technical Report, 15 May 1998 - 17 August 2001

Description: This report describes the long-term research and development issues related to polycrystalline thin-film solar cells. Our general research approach is based on combining activities aimed at improvement of cell performance and stability with activities aimed at increasing our fundamental understanding of the properties of materials making up the cells: CdTe, CdS, multi-layer back-contact, and transparent conducting oxide (TCO) front-contact. We emphasize the relation between structural and elect… more
Date: March 1, 2002
Creator: Kaydanov, V. I. & Ohno, T. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Density Distributions of Cyclotrimethylenetrinitramines (RDX)

Description: As part of the US Army Foreign Comparative Testing (FCT) program the density distributions of six samples of class 1 RDX were measured using the density gradient technique. This technique was used in an attempt to distinguish between RDX crystallized by a French manufacturer (designated insensitive or IRDX) from RDX manufactured at Holston Army Ammunition Plant (HAAP), the current source of RDX for Department of Defense (DoD). Two samples from different lots of French IRDX had an average densit… more
Date: March 19, 2002
Creator: Hoffman, D. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen