Anvesh Gaddam

8 Questions 12 Answers 0 Followers

Questions related from Anvesh Gaddam

How to obtain linearly varying component of pressure gradient in periodic flows in Fluent?

The pressure drop between the modules in periodic flows (such as in a pipe) is periodic. This pressure gradient can be decomposed into a periodic and linearly varying component. The linearly...

06 June 2020 4,448 0 View

Does de-ionized water change color of a substrate coated with some chemical?

Out of curiosity, I would like to know whether any chemical coating on a substrate change its color when de-ionized water touches it. Precisely, if I pass some water through a microchannel in...

23 October 2016 5,114 3 View

How to get better bonding strength between a glass substrate and SU-8?

I am trying to transfer patterns of 20 microns on a glass substrate (cover slip). I use omnicoat (about 3 coats for adhesion promoting) before spincoating SU8 2050. Even after following the...

27 July 2016 6,530 17 View

What is the viscosity of 10mM SDS (sodium dodecyl sulphate) in water?

Is there any data sheet available for viscosity for SDS-water mixture at room temperature? If not, how much variation can be expected in increase in viscosity of solution of 10mM of SDS is added...

14 June 2016 8,725 4 View

Is it possible to get a vertical wall in wet etching of silicon?

I would like to know whether it is possible to get vertical side walls in etching of either or silicon wafers using TMAH/KOH based wet etching processes. In general, if I...

13 April 2016 8,948 8 View

Any advice on the force experienced by a wall caused by a moving vortex?

Consider a vortex approaching a wall as shown in attached figure. In the second case vortex is near to the wall compared to the first case. So, does the force experienced by the wall is more or...

21 December 2015 4,973 5 View

How do I increase the contact angle on PDMS?

Apart from providing textures or roughening the PDMS for increasing the contact angle, is there any coating (silane based or whatsoever) which can be applied on textured PDMS to increase the...

09 September 2015 6,910 10 View

PDMS to PDMS de-bonding?

I have a structure on PMDS (produced by peeling off PDMS from SU8 mould). Now I would like to pour PDMS on this structured PDMS (which is now act as mould) and peel off it so that the structure...

22 May 2015 3,700 8 View