Jose Joseph

11 Questions 42 Answers 0 Followers

Questions related from Jose Joseph

What decides the deposition rate in DC magnetron sputtering.. Power, Voltage or Current?

Hi all, I am working with a DC magnetron sputtering station having a power supply with constant power, constant voltage and constant current modes. My depositions used to last for several hours...

07 October 2019 8,106 5 View

Do anybody have an idea on the approximate price of Nanoscribe Photonic Professional GT 3D printer?

Hi all, Could somebody help me with the approximate price range of Nanoscibe Photonic Professional GT 3D printer? Thanks in advance, Jose

03 December 2018 6,892 4 View

How to measure high frequency current signals?

I have an application where I need to measure current signals with frequency 2 MHz to 5 MHz. The current signal variation will be in the order of few micro Amperes. Can anyone suggest an idea to...

07 March 2017 5,470 3 View

What is the easiest way to measure Boron doping concentration in a Silicon thin film deposited on glass/SiO2?

Dear all, Can anyone suggest me the easiest way to assess the boron concentration in a thin silicon film (50nm) deposited on a glass/SiO2 substrate? Will EDS in SEM help? There are literature...

27 July 2016 8,697 3 View

Can we get any commercial IC that can do DC voltage multiplication (four to five times)?

I have a requirement in my project wherein I need to multiply a DC voltage source four to five times. I have a DC source that can give 5 V at 1 Amps. I need to make it 20 to 25 V and the current...

09 March 2016 6,155 3 View

Can anyone suggest methods to reduce undercut during wet etching of metals?

Undercut is obvious in wet etching. But I wish if there is some method to reduce it by adding some additives to the etchant..!! I need to pattern 1 um thick copper film using wet etching. The...

09 November 2015 9,913 6 View

Can we use titanium as masking material in photo-masks instead of chromium for UV lithography?

Hi all, I am wondering if we can use titanium (>100 nm) instead of chromium as masking material in photo-masks for UV lithography. Titanium gives good adhesion to glass and can be patterned...

28 October 2015 3,048 6 View

Which metal give the best adhesion on SU-8 structural material?

Dear all, I have SU-8 as structural material of my MEMS device. I want to make electrical contacts over SU-8 structure. Which will be the best metal that suits for this application? Can titanium...

27 August 2015 9,880 7 View

Which metal gives best result for metal assisted chemical etching?

We are trying metal assisted chemical etching in our lab. Since the metal layer for this purpose needs to be too thin (few nm), the adhesion of metal to the silicon substrate is poor. We observed...

14 August 2015 6,885 4 View

Does anyone know about the difference in quality of e-beam evaporated thin films with a stationary and rotating substrate holder?

What all thin film quality parameters (thickness uniformity, roughness, stress etc) will be drastically affected if I use a stationary substrate holder instead of a rotating substrate holder in an...

01 August 2015 1,609 6 View

Can anyone suggest a suitable etchant for wet etching amorphous Silicon?

In my process flow, I want to wet etch amorphous silicon thin films selectively by keeping some areas of it protected with photoresist. In that case, I wish to use an etchant which is acidic in...

19 July 2015 4,474 4 View