Demineralized enamel grooves were exposed to an acid gel at pH=5 for 3weeks after irradiation with a KrF excimer laser with a wavelength of 248nm (total energy dose= 172 J/cm2) er with the second harmonic wave of a Q-switched Nd:YAG laser with a wavelength of 532nm (totai energy dose=100JIcm2), The mineral distributions were assessed quantitatively by transversal microradiography. Compared with...

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...

Poration of millions of cells with single laser pulses of an argon fluoride excimer laser is developed and demonstrated on plant cells. The essence of the technique is to use the large beam size (10 x 25 mm) of the excimer laser and to split it using an appropriate mask into millions of micron- or submicron-sized beams of 193-nm radiation with enough energy to perforate cell membranes and walls...

An excimer laser micromachining system is developed to study the process in fabricating high-aspect-ratio microstructures. Specifically, the study experimentally examines process efficiency and the impact of changing major laser operating parameters on the resulting microstructural shapes and morphology. The materials considered in the study include glass, silicon, and aluminum. The ablation or...