Influences of Electron Beam Irradaiton on Misting and Related Surface Condition on Sapphire Lens

Abstract

In order to explain the misting-free treatment by sheet electron beam irradiation (SEBI) for sapphire lens setting on endoscope top, influences of SEBI on surface energy are investigated. The SEBI increases surface energy, resulting in force-distance curve used for atomic force microscope. Based on the results of X-ray photoelectron spectroscopy, the SEBI enhances the bonding rates of -C-O- and -C-O-O- and decreases -C-C- bonding rate. On the other hand, influences of SEBI on surface water wettability are investigated. The SEBI enhances the wettability of the sapphire surface for water, n-hexadecan, and 1-bromonaphthalene. Since the adhesion molecular change coincides with the surface energy change, the dipole of adhesion molecular is the dominant factor to control the surface energy. In order to explain to the dipole factor change, the electron charge is measured, too. From the results, the surface energy change can be explained by the adhesion molecular change and electron charging.

Adhesive Force of Laminations of Titanium Untreated and Polycarbonate Homogeneously Irradiated by Low Potential Electron Beam Prior to Assembly and Hot-Press

“…26) Here we evaluate accumulative probabilities of peeling resistance (P p ) of the experimental values related to peeling resistance 27) expressed by the following equation:…”

An Aluminum/Polycarbonate (Al/PC) Joint by Homogeneous Low Voltage Electron Beam Irradiation (HLEBI) to PC Prior to Lamination Assembly and Hot-Press

“…29) This method is useful for statistical evaluation often used in quality control (QC). Here we evaluate peeling probability (P p ) of the experimental values related to peeling resistance 30) expressed by the following equation:…”

Improvement of Charpy Impact of Carbon Fiber Reinforced Polymer by Low Energy Sheet Electron Beam Irradiation

“…[4][5][6][7][8][9][10] The specimen is machined (see Fig. 1) from the sheet and is homogeneously irradiated with the electron beam through a titanium thin film window attached to the vacuum chamber, 240 mm in diameter.…”

“…[4][5][6][7] In addition, the irradiation has improved not only the bending fracture strain of carbon fiber, 8) but also the deformation resistivity, strength and fracture strain in static tensile tests. 9) In our recent publication, it has succeeded that the EB-irradiation with low energy also enhances the fracture stress and fracture strain of static bending test for CFRP.…”