Soumendu Sinha

11 Questions 17 Answers 0 Followers

Questions related from Soumendu Sinha

Can you suggest a temperature controller or temperature sensor for liquids/electrolyte solution for a wide pH range?

We are looking for a temperature controller or a temperature sensor/probe which can work for a pH range of 2-12. It would be nice if it can be integrated with a readout (using Arduino or any other...

10 October 2018 7,813 5 View

What difference would be obtained annealing a dielectric layer (aluminium nitride/aluminium oxide) in pure nitrogen in comparison to forming gas?

We have deposited Aluminium nitride over gate oxide (SiO2) in a MOSFET and taken Aluminium contacts. It is generally accepted that fixed oxide charges are reduced on treating the sample with...

06 June 2014 3,183 3 View

Is it possible to selectively etch aluminium without affecting aluminium nitride?

We want to selectively etch aluminum contacts. The underlying layer is aluminium nitride. How can we ensure that it is not etched? Is it possible the other way round?

05 May 2014 5,471 1 View

Can aluminium be selectively etched compared to aluminium oxide?

Aluminium etching mechanisms involve formation of aluminium oxide using aluminium etchant. Yet, if we want to selectively etch aluminium, can some recipe be made for that? Is it possible the other...

05 May 2014 2,331 4 View

Why is oxide incorporated when we do pulsed dc reactive sputtering of Aluminium nitride?

We are trying to deposit Aluminium nitride using pulsed dc reactive magnetron sputtering with pure Aluminium target. However, when we perform EDS analysis of the sample, we are getting 15-20%...

05 May 2014 8,952 19 View

Which software is best suitable for drawing process steps in semiconductor device fabrication to use it for research publications? Is Powerpoint OK?

I have been using powerpoint for drawing the process steps of semiconductor device fabrication, for devices like MOSFET or even MEMS devices. It appears to be very cumbersome and crude. They...

07 July 2013 5,338 17 View

In anodic bonding of silicon wafer and pyrex glass, what is the role of compounds like boric oxide, sodium oxide and aluminium oxide?

In the paper of characterizing anodic bonding by Lee et al., they talk of sodium being transported to cathode on application of voltage. Then what is the use of other compounds? The composition of...

05 May 2013 2,899 3 View

In chemical mechanical polishing(CMP), what role does the slurry chemical play?

We know that CMP is used for planarization of interconnects in IC fabrication and surface micromachining in MEMS processes. Yet, I am not able to ascertain the role of chemicals in slurry passed...

05 May 2013 1,267 1 View

What is the use of having high frequency(>2GHz) frequency and a lower frequency signals(KHz) in plasma generation for applications like RF sputtering or plasma ashing?

We tend to use high frequency and low frequency signals simultaneously in RF sputtering process. How do they affect the plasma? What are their uses?

05 May 2013 2,757 1 View

What is the difference between work function, ionization potential and electron affinity in a semiconductor? What do they physically mean?

I have read the definitions in books like Sze, Streetman, Kittel etc but all of them give mathematical treatment. For example, work function is given as energy required to take out an electron...

03 March 2013 8,826 24 View

Purchasing commercial SOI MOSFET

Dear All I am looking for commercial SOI MOSFETs for my work. Can you suggest whether any company sells SOI MOSFETs? I am looking for Fully-Depleted SOI MOSFETs which can be used for measurements.

01 January 1970 5,021 1 View