Why do closed channels filled with fluid contract from end when fluid is drawn out but expand from near the inlet when liquid is pushed in?

Say I have a flexible tube of 1 mm ID and 1 meter length with only 1 entry/exit point. I.e. It's a closed end tube. Let's call end that is closed as A and end that is open as B. I completely fill...

09 October 2018 8,559 0 View

Does an elastomer expand the same way every time it's stretched?

Say there is an elastomer strip of length L, width W and uniform thickness -T. All other parameters like material density, temperature are constant. I mark this strip with N points starting...

09 October 2018 5,033 3 View

High RI silicone or similar material?

Is there any material that can be coated on silicone rubber which will have full adhesion to silicone, is flexible and also has refrective index of mote than 1.8? I have read of hight RI silicone...

09 October 2018 1,220 0 View

Photo chemical etching?

07 August 2016 7,612 2 View

Low viscosity oil?

04 May 2016 3,472 5 View

What is laplace pressure for series and parallel constrictions?

02 March 2016 554 2 View

How stable are 1D droplet array storage coils?

Hi, I am trying to understand stability behind droplet transportation in microfluidic droplet storage coil or droplet storage tube which are used for droplet-on-demand systems. Say I am creating...

01 February 2016 9,620 1 View

What is the maximum length of microfluidic channel?

How long can a microfluidic channel be? Is there any upper limitation on the length of the microfluidic channel?

31 December 2015 4,918 4 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 View

What solvent can I used for Paal Knorr reaction between 6-amino hexanoic acid and 2.5 hexanedione?

I am try to make the Paal Knorr reaction between 2.5 hexnedione and 6-amino hexanoic acid, my problem is type of solvent to use, because 6-hexaminohexanoic acid is soluble in water but I am not...

02 March 2021 4,443 2 View

How to polymerize TEOS?

I want to polymerize TEOS on a surface. I know that NH4OH is a preferred catalyst and an alcoholic solvent should be used .But I can not find certain amounts of each material to use. Does any one...

02 March 2021 1,404 6 View

How can extract ciprofloxacin hydrochloride disolve in water er to organic solvent such as dichloromethan or any other solvent?

I need a procedure to extract the ciprofloxacin hydrochloride from aqueous solution by using dichloromethane in detail,. I thank you very much.

01 March 2021 4,306 1 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

How to make fractions of chloroform extract of plant, using seperating funnel?

28 February 2021 8,466 2 View

Why am i not getting solid after reacting APTES with salicylaldehyde?

The reaction of APTES with salicylaldehyde in ethanol leads to the formation of imine compound yellow solid which is mention in literature, but I am not getting yellow solid I don't know why? when...

28 February 2021 2,955 2 View

can I treat waste water containing solvents and alcohol with electrocoagulation?

there are solvents and alcohol in the waste water of a factory that produces disinfectants. Increasing this waste water requires very serious operations. Can I treat this waste water with...

27 February 2021 2,609 3 View

Is IMPACT FACTOR justified in case of Taxonomy?

There is huge pressure of getting good impact factor on scholars now a days. On the other hand Taxonomy is a very dry subject and the concerned papers can only get citation in same group of organism.

26 February 2021 5,851 1 View

How to replicate the well conditions of a crystal hit with 20%(w/v) isopropanol?

I had a crystal hit in a well with 0.1M HEPEs pH 7.5, 10%(w/v) PEG 4000, and 20%(w/v) isopropanol. Why is isopropanol in w/v here if it's just solvent? How do I recreate this well condition?

25 February 2021 9,761 1 View