Shiru Jiang

3 Questions 4 Answers 0 Followers

Questions related from Shiru Jiang

How to measure the focusing efficiency of Fresnel zone plate (FWHM is in micrometer scale) ?

We want to measure the focusing efficiency of the Fresnel zone plate with a very small FWHM. "The focusing efficiency is defined as the ratio of the total power in a circular aperture with a...

02 November 2020 1,425 7 View

What material can be used as the substrate to make the thin PMMA layer be easily peeled off?

I want to get a bilayer structure that consists of conductive reduced graphene oxide (rGO) on the thin PMMA or PDMS surface. First I spin-coated PMMA (PDMS) on glass (plastic Petri dish and wafer...

10 January 2020 6,876 0 View

How to improve the hydrophilic of PDMS or PMMA?

I want to spin coat GO film on the PDMS or PMMA surface, and I did the plasma treatment for PDMS and PMMA. After that, I got the surface with many cracks and very non-uniform hydrophilic, I don't...

21 November 2019 329 4 View