Development and Stress Analysis of Nano Cutting Force Detector

Abstract

The authors have developed the nano cutting force detector (NCFD), and obtained the cutting characteristics of the epoxy resin, the rat kidney, and the platinum spatter film of 40 nm thick. There was no inferiority for the ultra thin sections made by NCFD when comparing with a ready_ made ultramicrotome. Consequently, (1) it was possible to measure the cutting force in the nano level order sectioning. (2) The cutting force profile greatly depends on the shape of the surface. (3) The cutting force in creases with increasing of the cutting speed. (4) The cutting force increases with the thickness at a constant speed. (5) The cut ting force increases with the hardness in the range of HV1_ 25. (6) The 40 nm thick layer was detectable by using semiconductor strain gauge type sensor. Sectioning force profile of the NCFD reflected the chatter, the condition of the ultra_ thin section, and the contact with knife and cutting surface. This new evaluation technology was established with NCFD.

Design and characterization of nanoknife with buffering beam forin situsingle-cell cutting

“…The result also showed that the nanoknife with 5 • edge angle was strong enough to cut a single yeast cell. It was reported that cutting a section 100 nm thick from a block of polymer whose face is (30 × 30) μm would require a force of 1.8 μN [24]. In our experiment, the yeast cell cutting force is more than 60 μN.…”

Fabrication and characterization of a carbon nanotube-based nanoknife

“…This resin had several advantages over vitreous ice for the testing a nanoknife based cutting process; (a) Epon can be polymerized so it is reasonably soft, and its mechanical properties are fairly well known; (b) the sectioning of vitreous ice would have required a cryo-environment, which was not attainable in our SEM. Moreover, ultra microtome cutting experiments on Epon resin by Asakura et al [18] have suggested that the cutting force depends on section size and section thickness. Based on their measurements, cutting a section 100 nm thick from a block of polymer whose face is (30 × 30) μm, would require a force of ~1.8 μN.…”