How does poor substrate cleaning contribute to streaky coatings on windshields during MS-HS sputtering in Pakistan?

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How does poor substrate cleaning contribute to streaky coatings on windshields during MS-HS sputtering in Pakistan?

If the windshield glass is not properly cleaned, residues like oil, dust, o r water stains may cause streaks in the final sputtered layer. What low-cost and locally available glass cleaning procedures can ensure streak-free sputtering for transparent coatings?

Talha Kyanii asked on 26 Jul 2025 16:09:41 pm

1 Answer

27 views |

Gari Master - on 26 Jul 2025 16:11:40 pm

Residues like grease, fingerprints, water spots, o r dust on the windshield act as adhesion barriers, causing:

Poor film bonding

Localized thickness variation

Optical distortion o r streaking

Locally feasible cleaning steps:

Wash with mild detergent and tap water.

Rinse with deionized water.

Ultrasonic cleaning in acetone and isopropyl alcohol IPA.

Dry with nitrogen o r air blower.

Optional: Use UV-ozone o r plasma cleaning for lab-grade applications.

Consistency in cleaning is critical for streak-free coatings.