What is the maximum length of microfluidic channel?

More Deval Vyas's questions See All

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 8,640 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 5,119 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 1,309 0 View

Removing ink without sheer force just by dipping in solvent or ink-remover?

I am looking for fast drying inks that that be completely removed without leaving any traces or ghosts behind by just dipping the substrate in ink remover. I am not able to apply any sheer force...

05 June 2017 1,150 2 View

Photo chemical etching?

I am trying to etch an array of 12 to 30 micron holes in a 10 cm x 10 cm x 10 micron thin aluminium and SS foil using photo-chemical etching. The distance between two holes (pitch) will be 100...

07 August 2016 7,731 2 View

Low viscosity oil?

Hi, I am searching for a clear transparent oil which has same viscosity as that of Water. the oil has to be immiscible with water. Can you please suggest any of-the-shelf product? I have read that...

04 May 2016 3,544 5 View

What is laplace pressure for series and parallel constrictions?

I need help in calculating the total pressure required to move droplets in a micro channel network with constrictions. I am moving 100 droplets in a micro-channel which also has 100...

02 March 2016 690 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 9,694 1 View

Geotechnical Engineering (Proceedings of the ICE) time review?

Hello everyone, I recently submitted an article to Geotechnical Engineering (Proceedings of the ICE), and the current status has been listed as "EiC Pre-assessment: Ready" for the past 20 days. I...

10 August 2024 6,493 1 View

Polymer wear calculation?

What is the method for analytically calculating the wear and service life of polymer-polymer sliding pairs?

04 August 2024 1,078 1 View

What should a Mechanical Engineering PhD scholar focus on during their PhD to enhance their chances of securing a postdoctoral position?

29 July 2024 7,714 4 View

May I know the exact Quartile of the journal- Advanced Engineering Materials (Wiley) for material science category?

In some data sources it has been grouped in Q1 and some shows it is Q2.

29 July 2024 4,227 2 View

How to explain the different interaction between soluble and insoluble polymer in water?

Hello everyone, I am try to understand the differences interaction between insoluble and soluble polymers in water with metal ions and how theit charge density (of metal ions) affect the interaction.

29 July 2024 6,350 3 View

Ternary in Electrical Engineering?

Dear Research Community I would like to invite Elctrical Engineering specialists to solve problems related to Ternary Algebra or tripple sets I have an algorithm that places in relation three...

28 July 2024 5,771 2 View

In terms of chaos, what is the necessary and sufficient condition for authoritarianism, permanent or temporary, to come to exist and persist?

Since 2016 Brexit, the world needed to change the thinking behind traditional democracy as the democratic landscape changed, yet traditional democratic thinkers and actors have been acting as if...

28 July 2024 6,515 1 View

What topic or subject does Production Engineering need to address more?

Contemporary scores or innovations in scientific approaches. Hybrid methodologies, emerging themes and cross-cutting issues?

27 July 2024 648 3 View

What binder would be the best choice to modify glassy carbon electrode with a 2D Material like Graphene or MXene?

I am trying to drop cast 2D Materials on Glassy Carbon Electrode for Cyclic voltametry and EIS purpose. What would be best binders to use?

23 July 2024 5,776 2 View

Can a shoot-through event of a tri-state digital buffer cause momentary Hi-Z state?

// interested in the difference between floating events and short circuits.

22 July 2024 6,565 0 View

Ana Trapaidze

The limitation to the length depends only on a pressure drop one could induce. like in electricity, the flow rate is proportional to the potential difference (pressure drop) and inverse proportional to the resistance. The resistance on its turn is proportional to the length of the channel and inverse proportional to the section area. It means the longer it the channel the higher pressure drop is needed to achieve a certain flow rate.

Deval Vyas

Thanks Ana.

I was using the calculator on Dolomite web site and mistakenly entered the length into mm thinking that I was entering in microns. So i entered length as long as 1 km. The calculator still gave me calculations...as it would be expected, but it raised a question as to what is the maximum practically length feasible considering constrains on material strength. Is it actually practically possible to make a km long serpentine resistor or a droplet storage channel...??..just wondering...

Maxime Harnois

I'm agree with Anna.

You must take, if channel increase, the pressure (deltaP) you must applied will more strongly increase if you want to kept your flow rate constant!!! I have made lot of experiments where it was not possible to fill my microchannel...

Thanks Harnois..