Dzetty soraya abdul aziz

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Questions related from Dzetty soraya abdul aziz

Does refractive index of magnetic thin film changes when exposed to magnetic field?

I synthesized magnetic nanoparticles using sol gel method and then deposited on a substrate. i just want know if i expose the thin film to magnetic film, will the RI changes? from what i know, if...

23 February 2018 5,706 1 View

Can my palette( SiO2 + CTAB ) mixed with KBr change color?

i make a palette ( SiO2 + CTAB ) mixed with KBr. the color supposedly to be white but after 2-4 hour it change to a little bit orange. anybody why the color change.

26 October 2016 5,999 3 View

Which peak in PL analysis need to be referred to obtain the energy band gap for ZnO nanowires sample?

This is Photoluminescence (PL) analysis for ZnO nanowires samples. This graph represents 3 samples which located at different positions in quartz tube furnace. The samples are: a) on-top, b) 16...

27 April 2016 8,730 7 View

How to get an IV curve using conductive atomic force microscopy (cAFM) for ZnO nanowires fabricated on a glass substrate?

I synthesized ZnO nanowires on a glass substrate via thermal evaporation method. The nanowires have successfully grown vertically and well-alligned on the substrate. However, I faced a problem to...

16 March 2016 5,730 2 View

Is the extrapolation graph of [(αhv)2 vs E] almost similar to extrapolation graph of [(αhv)1/2 vs E]?

Hi all, I plotted two types of graphs, (αhv)2 vs E and (αhv)1/2 vs E in order to determine the energy band gap of ZnO nanowires for my sample. As we know, ZnO is direct band gap which means that...

12 February 2016 1,203 9 View

How to explain the growth of ZnO nanowires on cleaned (bare) glass substrate by thermal evaporation?

I synthesized ZnO nanowires on glass substrates without any template by thermal evaporation method (using horizontal quartz tube furnace). The source material is Zn powder and no foreign catalyst...

28 December 2015 431 5 View

How do I obtain the value for the energy band gap by referring to PL graph?

Hi, My experiment is about the fabrication of ZnO NWs on glass substrate via thermal evaporation method. This experiment involved no dopant and free-catalyst.The excitation energy was 3.39 eV (365...

22 December 2015 6,498 3 View

Why do I have Ca contamination in EDX graph for ZnO nanowires samples?

I fabricate ZnO Nws on bare glass substrates. The experiment was done using quartz tube furnace via thermal evaporation method. The source material is Zn powder. Note that no metal-catalyst, no...

21 December 2015 7,920 10 View