Laser assisted

Boyarkine O V, Settle RDF and Rizzo T R 1995 Vibrational overtone spectra of jet-cooled CFgH by infrared laser assisted photofragment spectroscopy Ber. Bunsenges. Rhys. Chem. 99 504-13... 

Laser-Assisted Thermonuclear Fusion. An application with great potential importance, but which will not reach complete fmition for many years, is laser-assisted thermonuclear fusion (117) (see Fusion energy). The concept iavolves focusiag a high power laser beam onto a mixture of deuterium [7782-39-0] and tritium [10028-17-8] gases. The mixture is heated to a temperature around 10 K (10 keV) (see Deuterium AMD tritium). At this temperature the thermonuclear fusion reaction... 

Although practical generation of energy by laser-assisted thermonuclear fusion remains well ia the future, the program has provided some of the most exacting requirements for laser technology and has led to advances ia laser equipment that have been adopted ia other areas. Thus the research and development associated with thermonuclear fusion work has helped to spur advances ia laser technology useful for many other appHcations. 

Chemical Vapor Deposition. In chemical vapor deposition (CVD), often referred to as vapor transport, the desired constituent(s) to be deposited are ia the form of a compound existing as a vapor at an appropriate temperature. This vapor decomposes with or without a reducing or oxidizing agent at the substrate— vapor interface for film growth. CVD has been used successfully for preparing garnet and ortho ferrite films (24,25). Laser-assisted CVD is also practiced. 

Plasma-jet diamond techniques yield growth rates of about 980 p.m/h (163,164). However, the rate of diamond deposition is still one to two orders of magnitude lower than the HP—HT technology, which is about 10,000 p.m/h (165). Diamond deposition rates of ca 1 p.m/s have been reported usiag laser-assisted techniques (166). This rate is comparable to the HP—HT synthesis. 

Direct laser-assisted myocardial revascularization (DMR) is an approved technique in the US, Europe, and parts of Asia to create numerous myocardial channels. This results in the induction of a massive inflammatory reaction, which in turn induces angiogenesis. The other FDA-approved pro-angiogenic therapy is the use of recombinant human platelet-derived growth factor (Regranex) for use in the treatment of diabetic neuropathic foot ulcer s. 

Easy availability of ultrafast high intensity lasers has fuelled the dream of their use as molecular scissors to cleave selected bonds (1-3). Theoretical approaches to laser assisted control of chemical reactions have kept pace and demonstrated remarkable success (4,5) with experimental results (6-9) buttressing the theoretical claims. The different tablished theoretical approaches to control have been reviewed recently (10). While the focus of these theoretical approaches has been on field design, the photodissociation yield has also been found to be extremely sensitive to the initial vibrational state from which photolysis is induced and results for (11), HI (12,13), HCl (14) and HOD (2,3,15,16) reveal a crucial role for the initial state of the system in product selectivity and enhancement. This critical dependence on initial vibrational state indicates that a suitably optimized linear superposition of the field free vibrational states may be another route to selective control of photodissociation. 

Goodman G (1997) Laser-assisted dermal grafting for the correction of cutaneous contour defects. Dermatol Surg 23 95-99... 

Fast screening techniques, such as temperature-resolved in-source filament pyrolysis and laser-assisted pyrolysis, benefit from the high cycle time and mass accuracy of FUCR-MS [214]. An additional advantage of FUCR-MS in the study of pyrolysis processes is that MS can be readily used for structural identification of desorption and pyrolysis products. 

LAMS Laser(-assisted) mass spectrometry LSC Liquid-solid chromatography... 

Luntz and co-workers have recently carried out an impressive study that follows in the spirit of the Eley-Rideal work.44 Specifically, laser-assisted recombination of N-atoms desorbing to form gas-phase N2 on Ru(0001) was investigated. Experimental measurements of state-selectively detected N2 recoiling from the surface recombination event were obtained using resonance enhanced multiphoton ionization and ion time-of-flight methods. In this way translational energy distributions of individual rovibrational states could be obtained experimentally. In addition, N2-vibrational population distributions could be derived. 

Schneckenburger, H., Wagner, M., Kretzschmar, M., Strauss, W. S. and Sailer, R. (2004b). Laser-assisted fluorescence microscopy for measuring cell membrane dynamics. Photochem. Photobiol. Sci. 3, 817-22. 

Bernsen MR, Dijkman HB, de Vries E, et al. Identification of multiple mRNA and DNA sequences from small tissue samples isolated by laser-assisted microdissec-tion. Lab. Invest. 1998 78 1267-1273. 

Wolfbeis O.S., Fluorescence-based optical sensors for biomedical applications, In Scheggi A.M.V., Martelluci, S., Chester, A.N., Pratesi, R. (Eds.), Biomedical Optical Instrumentation and laser-Assisted Biotechnology, Kluwer Academic Publishers, 1996, p.327-337. 

Proceedings Biomedical Optical Instrumentation and Laser-Assisted Biotechnology Editors A.M. Verga Scheggi, S. Martellucci, A.N. Chester and R. Pratesi. Publisher Kluwer Academic (1996)... 

Shinn, G. B. Gillespie, P. M. Wilson, W. L., Jr. Duncan, W. M. 1989. Laser-assisted metalorganic chemical vapor deposition of zinc selenide epitaxial films. Appl. Phys. Lett. 54 2440-2442. 

Duan, X. Lieber, C. M. 2000. Laser-assisted catalytic growth of single crystal GaN nanowires. J. Am. Chem. Soc. 122 188-189. 

B.A. Mamyrin, Laser assisted reflectron time-of-flight mass spectrometry, hit. J. Mass Spectrom. Ion Proc., 131 (1994) 1-19. 

Study of the Gas-phase Chemical Structure During CO2 Laser Assisted Combustion of HMX. 

Figure 24. X-ray diffraction pattern (in the inset the 2D image) of the polyethylene sample recovered by the laser-assisted high-pressure reaction in the pure liquid monomer. The two measured sharp lines nicely fit the polymer diffraction pattern having a orthorhombic cell (Pnam) defined by the lattice parameters reported in the figure.

Wellmann et al. (2002) also examined prostate carcinoma with the aid of laser-assisted microdissection and SELDI to analyze protein extracts from about 500 cells. A number of differentially expressed proteins in the 1.5- to 30-kDa range were found between normal prostate gland cells and prostate tumors. A prominent (threefold) up-regulated protein peak at mass 4299 Da was observed for prostate tumor cells. The average relative intensities were 24.37 for tumor cells, 9.99 for transitional zone cells, and 7.26 for normal prostate cells. 

T0302 Excimer Laser-Assisted Destruction of Organic Molecules—General... 

---