نتایج جستجو برای: 308 nm excimer laser

تعداد نتایج: 303085  

2009
Qiangfei Xia Stephen Y. Chou

This paper addresses novel applications of an excimer laser (308 nm wavelength, 20 ns pulse duration) in nanofabrication. Specifically, laser assisted nanoimprint lithography (LAN), self-perfection by liquefaction (SPEL), fabrication of metal nanoparticle arrays, and the fabrication of sub-10-nm nanofluidic channels are covered. In LAN, a polymeric resist is melted by the laser pulse, and then ...

Journal: :Journal of the American Academy of Dermatology 2009
Electra Nicolaidou Christina Antoniou Alexander Stratigos Andreas D Katsambas

Vitiligo is a common and chronic disease with a great impact on patients' quality of life. Phototherapy with narrowband ultraviolet B radiation and excimer laser are two treatment modalities that are used increasingly for the management of the disease with variable results. In this article, we review the efficacy, adverse effects, and possible mechanisms of action of narrowband ultraviolet B an...

Journal: :Journal of the American Academy of Dermatology 2004

1999
Charles Kennergren

Objective: Excimer Laser technique can be used to extract leads. We present the European multi-centre experience. Method: The Spectranetics Excimer Laser is a Xenon-Chloride laser with a wavelength of 308 nm, not visible to the human eye. This cool cutting laser (508C) has an absorption depth of 0.06 mm. The laser energy is emitted from the tip of ̄exible 12, 14 or 16 French (Fr) probes and is ...

Journal: :Archives of dermatology 2004
Macrene R Alexiades-Armenakas Leonard J Bernstein Paul M Friedman Roy G Geronemus

OBJECTIVE To assess the safety and efficacy of the 308-nm excimer laser in pigment correction of hypopigmented scars and striae alba. DESIGN Institutional review board-approved randomized controlled trial. SETTING Private research center. PATIENTS Volunteer sample of 31 adult subjects with hypopigmented scars or striae alba distributed on the face, torso, or extremities. INTERVENTIONS L...

2008
María Jadraque Concepción Domingo Margarita Martín

The development of structural changes in ZnO targets, upon laser irradiation at the wavelengths of 266 and 308 nm, is studied by Raman spectroscopy. At the wavelength of 308 nm, oxygen vacancies are found to develop monotonically with increasing laser intensity. At 266 nm, a structural change in the irradiated ZnO targets, possibly related to nanostructuring, is observed above the laser fluence...

2005
A. Adonin J. Jacoby V. Turtikov A. Fertman A. Golubev D.H.H. Hoffmann J. Wieser

In December 2005 a heavy ion beam pumped UV excimer laser has been successfully demonstrated for the first time in the experiments performed at the GSI-SISHHT target area [1,2]. The primary goal for this experiment was to demonstrate laser effect on the KrF line (λ = 248 nm) and to proof this using various methods. The dependence of spontaneous and stimulated emission from pressure and composit...

Journal: :Circulation research 1993
A A Oraevsky S L Jacques G H Pettit R A Sauerbrey F K Tittel J H Nguy P D Henry

Autofluorescence spectroscopy of arterial surfaces provides information about the distribution and composition of atherosclerotic plaques. The aim of the study was to determine whether accumulation of peroxidized lipoproteins in arterial walls, a process postulated to play a role in initiating atherosclerotic changes, can be demonstrated by fluorescence spectroscopy. XeCl excimer laser (308 nm)...

Journal: :Biochemical and biophysical research communications 1981
E F McCord S G Boxer

A system has been developed which permits ultraviolet irradiation of samples in the probe of a 360 MHz nmr spectrometer using an excimer laser (A= 249 or 308 nm). This system is ideally suited for studying Chemically Induced Dynamic Nuclear Polarization (CIDNP) during photochemical reactions involving amino acids, proteins, and nucleic acids. The photoreagents quinoxaline and p-methoxyacetophen...

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