Is it possible to deposit thin films of up to one micrometer using one step chemical birth deposition?

08 September 2017 6,486 2 View

Which is the best procedure to measure the absorbance of nanopowders using uv-vis spectrophotometer?

I have several nanopowder samples synthesized in our lab and I would like to compare their absorbances as a function of the various treatments. We have a uv-vis spectrophotometer, so please advise...

07 August 2015 2,400 5 View

How does the bias voltage affect/influence impedance properties of a MOS structure?

I have done impedance measurements of a metal-oxide-semiconductor structure as a function of the bias voltage. The radius of the impedance arc in the Nyquist plot decreases with and increase in...

09 October 2014 7,830 3 View

Are all metal acetylacetonate precursor salts soluble in ethanol?

I want to deposit zirconium oxide by spray pyrolysis. I am not a chemist and I need the advice of chemists out there. Is zirconium acetylacetonate soluble in ethanol? I found that it is soluble...

09 October 2014 7,158 5 View

How can I calculate film thickness and refractive index from UV-vis reflectance and/or transmittance data only, without interference fringes?

For thicker homogeneous films, the optical reflectance and transmittance spectra show several interference patterns which can be used to obtain optical constant using Swanepoel and other related...

09 October 2014 5,691 10 View

Is it possible to measure transistor output and transfer characteristics using Autolab setup?

I am preparing to start working on thin film transistor (TFT) devices from metal oxides. In literature I have seen most people use semiconductor parameter analyzers for measuring drain current as...

08 September 2014 7,112 5 View

How can I prepare a mask for fabricating a metal oxide thin film transistor?

I want to fabricate thin film transistors as part of my new research work. I would like to know how I can make good masks that I need to use during deposition of the different layers....

04 May 2014 3,382 2 View

What is the decomposition temperature of indium chloride, indium acetylacetonate and antimony chloride?

The difference in the deposition rates in sprayed thin films between different precursors in highly dependent on their decomposition temperatures, and residence time on the substrate. How do I get...

01 February 2014 6,523 2 View

How is the droplet size in an aerosol in a spray pyrolysis experiment calculated?

I sprayed my samples by nebulizing/atomizing a precursor solution of InCl3 salt dissolved in ethanol solvent. I would like to know the size of the aerosol droplet. Is there a way of calculating...

31 December 2013 6,812 6 View

Why are indirect semiconductors used as absorbers in solar cells despite their inferior absorption coefficient compared to direct semiconductors?

How does the nature of the band gap (direct or indirect) affect the efficiency of a solar? Recombination processes must be different for solar cells made from these solar cells, how does this...

10 November 2013 167 7 View

What is the most Operating System (OS) which can be INSTALL on Tiny hard devices like Raspberry Pi (RPi) hardware ?

I'm targeting to deploy a mesh network and manually configure MANET routing protocols. I'm preparing scenarios, architectures, and hard devices needed to do that. Are there some step-by-step...

03 March 2021 1,931 5 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

Sutter electrode holder leaking after applying positive pressure. How to fix?

I am using a Sutter electrode holder for my patch clamp experiments, but I'm having trouble keeping positive pressure inside my electrode due to a leak out of the back of the holder. I have added...

02 March 2021 5,829 1 View

What thickness need for ITO to use as conductive layer?

I want to do RF sputtering of ITO on glass substrate using magnetron sputtering. what thickness do i need to make it good conductive layer to use it for PSC. Moreover, whats about thickness of...

01 March 2021 395 3 View

How can I integrate a routing protocol in a tiny device (e.g. Raspberry Pi)?

Hi Community, I'm facing the issue of integration/compiling a new routing protocol in a WSN simulator. The final goal is to successfully add, configure this routing protocol in hardware devices...

01 March 2021 9,332 6 View

1 nm thick MgO thin-film to be deposited on Si wafer using thermal evaporation. What will be the optimum deposition conditions?

Favourable conditions of base pressure, rate of deposition. Also, by which characterisation technique to be used to verify the thickness of the deposited film.

28 February 2021 3,640 3 View

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

Why is my platinum counter electrode getting dirty during electrodeposition?

I am conducting anodic electrodeposition of MnO2 onto a stainless steel substrate, using a platinum strip as a counter electrode. This is done galvanostatically, with the current held between 5...

27 February 2021 1,829 3 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View