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Polycyclic Aromatic Hydrocarbons as Sublimable Adhesives

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journal contribution
posted on 25.02.2017, 00:00 by Haydn T. Mitchell, Merry K. Smith, Nicholas D. Blelloch, Douglas W. Van Citters, Katherine A. Mirica
Polycyclic aromatic hydrocarbons (PAHs) are used as adhesives that can be removed on-demand by sublimation without application of solvent or mechanical force. These adhesives are polycrystalline solids that enable bonding of glass, metal, and plastic with lap shear forces ranging from 5 to 50 N cm–2. Systematic examination of factors governing bonding suggests that favorable chemical interactions between bonded surfaces and PAHs, and structural features at the surface of the substrate influence both the lap shear force and the mechanism of failure. Utilizing sublimable PAHs enables sequential bonding and release of substrates, as well as control of actuation of electronic systems through mechanical work.