Won Bae Han

7 Questions 2 Answers 0 Followers

Questions related from Won Bae Han

Is there a material that can absorb (or reflect) a light in one-way?

Hi, I have a question about reflection, transmission, and absorption of light. Is there a material that can absorb (or reflect) a light in one-way? For example, there is a substrate that has a...

02 December 2019 473 5 View

How can FeNWs be dispersed in organic solvent?

Hi, Does somebody have an idea to disperse FeNWs (or AgNWs) in organic solvents such as acetone, chloroform, and ethyl acetate? If a surfactant does the trick, please recommend me a proper...

26 September 2019 747 3 View

Why the protons of NAFION membrane should be exchanged to sodium ions for using NAFION membrane as sodium exchange membrane?

Hi, I know that NAFION membrane is state-of-the-art cation exchange membrane. I have one question about the post-treatment process of the membrane. For using NAFION membrane as "sodium" (NOT...

11 July 2019 3,488 0 View

How high is NAFION membrane permeable to water??

Hi. I am interested in a membrane that has high permeability to water and low(appropriate) permeability to cation. And I found that NAFION can absorb and permeate water. Does anybody know the...

29 March 2019 9,124 1 View

Is there any membrane that only permeates water (not ions)?

Hi. Does anybody know a membrane that only permeates water (extremely low permeability to ions)? I would like to make a system that, when pressure is applied to a chamber in which a certain...

22 March 2019 1,779 3 View

Does the distance between two patch clamp electrodes influences signal-to-noise ratio?

Does the distance between two patch clamp electrodes influences signal-to-noise ratio? or any other effect on electric signal measurement? Buffer medium will be deionized water or PBS.

17 October 2017 5,402 2 View

Would fluorinated alkyl-silane covalently bound to the surface of SiO2 substrate be remained stable after piranha cleaning?

I am going to modify a SiO2 substrate with one of the fluorinated alkyl-silanes for having the surface of the SiO2 substrate hydrophobic and oleophobic as well. After that, silane-treated SiO2...

14 March 2016 9,816 3 View