What is the best technique that can be used for depositing a thin films of PEG (20000) polymer? And what are the best conditions for doing so?
Use water to produce an uniform solution of PEG. After proper mixing, place the solution into small glass petridish and place it in a dust free oven at around 60 degrees.
Ultrasonic coating systems have been used for years to deposit thin films ranging from 500 nm +/- 50 nm up to 500 micrometer on many types of substrates. When you choose proper solvents you easily control the coating thickness and uniformity.
Dear Shakir,
Kindly find the response of following question mention below for your kind attention.
What is the best technique that can be used for depositing a thin films of PEG (20000) polymer?
Response: I think you can use Matrix-Assisted Pulsed Laser Evaporation (MAPLE) deposition technique. This technique is a recently developed thin film deposition technique, slightly different from PLD (pulsed laser deposition), particularly well-suited for organic/polymer thin film deposition. The advantage of MAPLE with respect to PLD technique is that a great part of the laser beam energy is transferred to the solvent and molecules to be deposited are ejected from the target mainly due to solvent vaporization. Such technique is therefore especially well-suited for deposition of large molecules as in organic or polymeric compounds, whose structure may be damaged by direct laser irradiation.
And what are the best conditions for doing so?
Response: Kindly refer to following articles whose references are provided below.
Materials Science and Engineering: C, 27, 2007, p1190
J. Appl. Phys., 91 (4) (2002), p. 2055
Thin Solid Films, 398–399 (2001), p. 607
I think this information will help you.
Best of Luck.
Greetings,
Two important questions: What is your substrate? What is desired thickness range?
Hi Harrison
The base is glass slides and the thickness up to 40 micrometer
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