Now showing items 6066-6085 of 12695

• Laser annealing of silicon clusters ﻿

(1991)
A miniaturized pulsed laser-vaporization supersonic cluster beam source was developed and mounted on the magnetic axis of a Fourier transform ion cyclotron resonance apparatus (FT-ICR) so that the clusters were directly ...
• Laser Cooling of Ions in a Neutral Plasma ﻿

(2018-11-15)
In this thesis, we present results from the first successful application of laser-cooling to a neutral plasma. Specifically, we laser-cool an ultracold neutral plasma (UNP) generated from the photoionization of a cold ...
• LASER FLASH PHOTOLYTIC DETERMINATION OF QUENCHING RATE CONSTANTS FOR TRIPLET SENSITIZERS BY ALKYL PEROXIDES ﻿

(1983)
Rate constants for quenching of triplet sensitizers by several alkyl peroxides were measured by laser flash photolysis in benzene solution. Because these rate constants decrease monotonically with sensitizer triplet energy, ...
• Laser flash thermal diffusivity determination procedure for high temperature liquid metals ﻿

(1991)
A method is proposed for determining the thermal diffusivity of high temperature liquid metals that involves levitating a small sample under microgravity conditions, melting it, and predicting its thermal response to a ...

(1977)

(1976)
• Laser Induced Graphene Nanomaterials and Applications ﻿

(2017-10-16)
Laser-induced graphene (LIG) was recently discovered by one step laser induction of CO2 laser (10.6 µm wavelength) under ambient atmosphere. Because of the porous structure with lots of defect sites, LIG were studied as ...
• LASER INDUCED OPTICAL PUMPING ﻿

(1985)
Optical pumping is a very useful technique for the production of spin polarized particles. This thesis describes laser induced optical pumping in helium, argon, and neon metastable atoms. The laser used to optically pump ...
• Laser induced refractive index changes in lithium niobate doped with cobalt ﻿

(1974)
The optical spectra of lithium niobate doped with cobalt were observed at room temperature and 77K. The absorption bands were identified using a theoretical energy level diagram. EPR spectra were obtained at 9 GHz and 4.2K. ...
• Laser ionization studies of supersonic semiconductor clusters ﻿

(1985)
Cold silicon and germanium clusters have been produced in a supersonic molecular beam by laser vaporization of a silicon or germanium rod. The cluster beam is characterized by laser ionization studies and time of flight ...
• Laser microspectrofluorometry for the diagnosis of atherosclerosis ﻿

(1997)
Cardiovascular disease is a major cause of death in the U.S., and atherosclerosis, the principle cause of myocardial and cerebral infarctions, accounts for most of these deaths. In current clinical practice, cholesterol ...
• Laser optical pumping of atomic beams ﻿

(1985)
Beams of heavy rare gas metastable atoms with a high degree of polarization have been produced by optical pumping using a variety of dye laser systems. Argon (Pa) metastable atoms were efficiently polarized. but frequency ...
• LASER PHOTOACOUSTIC SPECTROSCOPY OF FORBIDDEN TRANSITIONS: ACETYLENE AND ALKYNE HIGH ENERGY VIBRATIONAL STATES AND THEIR INTERACTIONS (INTRAMOLECULAR, REDISTRIBUTION) ﻿

(1984)
We developed an ultrasensitive, computer-controlled, visible/near-IR, cw laser photoacoustic spectrometer capable of detecting forbidden transitions in order to understand the nature and states of highly vibrationally ...
• LASER PROCESSING OF SEMICONDUCTORS ﻿

(1982)
The great potential for advancing the state of the art in fabrication of semiconductor devices and integrated circuits with the use of laser beam processing techniques is reviewed. The unique characteristics of this novel ...
• Laser produced vaporization of materials for use in mass spectroscopic analysis ﻿

(1968)
The focused output of certain solid state lasers can be used to produce rapid surface heating and consequent vaporization in absorbing materials. For ordinary lasers it appears that the heating process can be adequately ...
• Laser spectroscopic trace chemical sensors for environmental sensor networks and portable medical devices ﻿

(2008)
This thesis represents the development of the first laser spectroscopy based trace-gas sensors with sensor characteristics which simultaneously satisfy low cost, handheld footprint, low power, and long term autonomous ...
• Laser-assisted metalorganic chemical vapor deposition of zinc selenide ﻿

(1992)
Laser-assisted metalorganic chemical vapor deposition (LMOCVD) has been used to grow epitaxial zinc selenide at temperatures as low as 200$\sp\circ$C. The metalorganic sources, dimethylzinc (DMZ) and diethylselenide (DESe), ...
• Laser-assisted metalorganic chemical vapor deposition of zinc sulfide ﻿

(1997)
Laser-assisted metalorganic chemical vapor deposition (MOCVD) was used to grow crystalline zinc sulfide at temperatures as low as 200$\sp\circ$C. The metalorganic sources, dimethylzinc and diethylsulfide, were photodissociated ...
• Laser-based microfabrication for cell adhesion and migration ﻿

(2008)
Mammalian cell adhesion and migration impact a multitude of cellular behaviors and tissue remodeling processes. Over the past several decades, investigators have methodically improved in vitro systems as mimics of the ...
• Laser-Induced Graphene-Based Materials for Electrochemical Energy Storage and Conversion ﻿

(2018-08-06)
The ever-increasing demand for clean energy has led to extensive research on the development of renewable energy technologies for energy storage and conversion, such as electrochemical capacitors, lithium-ion batteries, ...