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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Bibliographische Detailangaben
1. Verfasser:	Vakhshouri, Kiarash
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BLASTING CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING HEAT EXCHANGE IN GENERAL HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT HEATING LIGHTING MACHINE TOOLS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SOLDERING OR UNSOLDERING TRANSPORTING WEAPONS WELDING WORKING BY LASER BEAM WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	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.