Welcome to our blog! We are a team of JJC students doing Holiday Research Shadowing Programme at Nanyang Technological University (NTU)  from 3rd Dec to 14th Dec. Our group consists of Guo wei, Jacky and Myat Pan Phyu. We are doing about Nanomaterials and we would like to share our experiences!

Day 1

School of Material Science & Engineering, 2nd home for us for 10 days! :)

     This is our group picture with our mentor Ms Foo Wan Ling! :)

Today, we learnt about Electrochromic materials and devices. Electrochromic devices exhibit special color transformation ability in response to voltage. The working principal of electrochromic devices dpends on their electrochromic material properties. The organic or inorganic electrochromic materials undergone electrolytic loss or gain of electrons caused from oxidation or reduction reaction, leading to change of optical adsorption as well as color change.

(Credit: poster found in AFM lab)

This is Tungsten oxide (WO3), the inorganic material we used to do the Electrochromic test. It is a test for Electrochromism; the phenomenon displayed by some materials of reversibly changing color when a burst of charge/ voltage is applied. Tungesten oxide is one of them.

                                          This is transmissive device to carry out electrochromic test.

This is the actual Electrochromatic test when voltage is applied and colour changes from colourless to dark blue is observed.

Video showing Electrochromic Test. Cool, right? :D

We also learnt that electrochromic materials are useful materials for daily lives. The changes in color allow the modulation of light and heat transmittance which are always used in the commercial products such as smart windows and power-triggered dimming rear-view mirror.

Stay tuned! :)