Not able to get uniform coating with doctorblade technique? whats the optimum ratio of making good slurry for doctorblade technique?

25 February 2025 1 2K Report

I am trying to coat my sample through doctorblade but i am not able to get uniform coating, when i trying to spread my sample at some areas coating is uniform some areas its not uniform. One of my friend told may be my slurry too thick can anyone please help me with this

the ratio i am using is 0.160 gm my active material mostly zinc 0.040gm binder PVB and 1 ml ethanol

Mohammed Hussein j. H. Al'Atia

Dear Paul Thomas

Yes, you may no longer need a help after you go through the Ossila's technical report that found on the attached link below. Please, carefully follow it's contents. Best regards...

https://www.ossila.com/pages/doctor-blade-coating

More Paul Thomas's questions See All

How can women be responsive when they can make love for hours?

… with my present female lover … she and I spend anywhere from two hours to six hours in caressing, touching, cuddling, hugging, lip kissing, deep kissing and intimate conversation before,...

11 August 2024 4,521 0 View

Adhesion strength of coating?

How can I determine a good adhesion strength range for coatings on polymer surfaces, such as DLC on polymer substrates? Is there a specific threshold for adhesion strength (from T-peel tests)...

10 August 2024 942 3 View

Why do men not accept that continually hassling for sex proves that they want it more than their partner?

Your partner’s not there to service you, it’s not their job to keep you sexually satisfied. You’re together because you love each other and want to make each other happy. Constantly hassling them...

08 August 2024 1,491 0 View

Why do we equate male and female arousal?

Women, on the other hand, can become physically aroused (increased blood flow in the reproductive organs) without becoming psychologically aroused even in the slightest. (Robert Weiss)

05 August 2024 9,537 2 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

Why do women not understand that men are aroused by physical contact?

Women often complain that their husbands never touch them unless they want sex. (Michele Weiner-Davis)

02 August 2024 7,778 2 View

Why do women usually need more persuading than men do to have sex with a new lover?

Women need to feel a degree of sexual intimacy before sex becomes desirable… For women, intimacy sometimes results in sex; for men, sex sometimes results in intimacy. (Marina Muratore)

31 July 2024 8,860 0 View

Why do men and women confuse platonic love and sex?

Women associate affection with love. … Men associate affection much more directly with sex. … Men see affection of any kind as a sexual invitation. Many women find this bewildering. (Kramer &...

30 July 2024 9,498 2 View

Does anyone have experience electroporating SKOV3 cells with a large plasmid using Neon transfection?

I have been trying to electroporate SKOV3 cells with a large plasmid (11kb) without much success. Any tips?

29 July 2024 3,229 1 View

Why is it not common to see similar pairs in polymer sliding pairs?

If the pairs are similar, will it reduce the adhesion due to electric charges?

29 July 2024 3,185 2 View

Adhesion strength of coating?

How can I determine a good adhesion strength range for coatings on polymer surfaces, such as DLC on polymer substrates? Is there a specific threshold for adhesion strength (from T-peel tests)...

10 August 2024 942 3 View

How do I conformally do PR spin coating on trench structure?

I did PR spin coating on trench structure. I used AZ P4620 PR and the thickness or PR is around 11um. The substrate is Si. And my trench structure depth is 141um(negative way). Even though I...

08 August 2024 2,298 0 View

Why do i have a weak plasma and no coating during rf sputtering?

I have been getting a low plasma and no coating while doing rf sputtering of copper doped ZnS using a power of 140 watts and at pressure of 6.5x10-3 Mb.

07 August 2024 4,526 4 View

For the moringa oleifera extract using ethanol as the solvent,what is the alternative method to concentrate the extract other than rotary evaporation?

99% pure ethanol was used for maceration also alternate methods along with the temperature and time to concentrate the extract can be specified

31 July 2024 5,113 4 View

How to make a Lateral flow control line more uniform?

We have a lateral flow test on Sartorius 140 NC. The conjugate is gold-monoclonal antibody. Using different control lines (GAM, protein A, protein G) we get a very strong leading edge with reduced...

31 July 2024 4,510 3 View

What is the reason I get 400nm nanoparticles using an extruder with 200 nm membrane for cell membrane coating?

I am trying to coat my micelles and PLGA based nanoparticles with cell membrane using an Avanti mini extruder according to literature . I use 200nm membrane but my particles end up to be 400nm And...

30 July 2024 3,294 3 View

What is the main used curing agent for epoxy based coating?

I am trying to coating metal oxide into steel substrate, for better sticking planning to utilse epoxy based, Could you please suggest suitable curing agent for the coating purpose

25 July 2024 438 3 View

Comparison of Methanol and ethanol treatment on collagen based scaffolds?

Kindly share a research paper that explains the effect of Methanol and ethanol treatment on collagen based scaffolds. How it increases porosity and swelling. Kindly help me find a paper. Thank you

24 July 2024 3,937 0 View

How do you get pure primary macrophage cell culture?

I have been harvesting monocyte-derived macrophages from buffalo and cattle fresh whole blood using the same protocol for years and getting good macrophage cultures. Below is the protocol that I...

23 July 2024 4,074 2 View

What could be the possible reason that sintering of polycrystalline diamond fabricated with tape casting has suddenly started failing?

I make polycrystalline diamond with tape casting followed by HPHT sintering. When i sintered the samples up till May, the sintering was good. When i sintered the samples in June and July at the...

16 July 2024 3,212 5 View