METHOD OF FABRICATING HEAT PIPES AND VAPOR CHAMBERS USING A LASER OR ULTRA-VIOLET PROCESS

Techniques, systems, and arrangements are described herein which provide unique heat pipe fabrication techniques, whereby wettability of surfaces (hydrophilicity and hydrophobicity) of radio frequency (RF) compatible polymers may be modulated and controlled through a laser treatment. For example, us...

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Bibliographic Details
Main Author Vakhshouri, Kiarash
Format Patent
LanguageEnglish
Published 15.08.2024
Subjects
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
SOLDERING OR UNSOLDERING
TRANSPORTING
WELDING
WORKING BY LASER BEAM
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Summary:Techniques, systems, and arrangements are described herein which provide unique heat pipe fabrication techniques, whereby wettability of surfaces (hydrophilicity and hydrophobicity) of radio frequency (RF) compatible polymers may be modulated and controlled through a laser treatment. For example, using a femtosecond laser with a different dosage (a range of, for example, 50 J/cm2 to 100 J/cm2) in an evaporator portion of a heat pipe compared to the condenser portion of a heat pipe (a range of, for example, 25 J/cm2 to 45 J/cm2), polymers such as, for example, poly(methyl methacrylate) (PMMA) based polymers, polysulfone (PSF) based polymers, azobenzene, polytetrafluoroethylene, etc., may be chemically altered to have a different surface energy. Additionally, a different focus time of the femtosecond laser may be used in addition to, or instead of, the different dosages of laser energy.
Bibliography:Application Number: US202318387994