Related Experiment Video
Updated: Jul 25, 2026

Fabrication of Large-area Free-standing Ultrathin Polymer Films
Published on: June 3, 2015
Manufacture of a 10-km-scale radius-of-curvature surface by use of a thin-film coating technique
1Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582, Japan. miyoki@icrr.u-tokyo.ac.jp
Abstract:
We tried a method of making a 10-km-class large-radius-of-curvature surface that would satisfy both low microroughness (0.1 nm rms) and low waviness (lambda/100) by forming a spherically curved film with a low-loss coating technique on a flat surface produced by mechanical (chemical) polishing. We obtained a SiO2 surface with a 10255 +/- 250-m radius of spherical curvature that had less than lambda/30 waviness and 0.4-nm micro-roughness over a 9-cm-diameter area.
More Related Videos
06:30Fabrication of Ultra-thin Color Films with Highly Absorbing Media Using Oblique Angle Deposition
Published on: August 29, 2017
08:02Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars
Published on: February 11, 2020
Related Concept Videos
Area of a Surface of Revolution
Surface Area Calculations