Polymer Patterning with Self-Heating Atomic Force
Microscope Probes
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Posted on 2019-08-30 - 15:34
Scanning
probe-assisted patterning methods already demonstrated
a high degree of capabilities on submicrometer scales. However, the
throughput is still far from its potential because of complexity or
fragility of the probes for exploiting thermal effects, chemical reactions,
and voltage-induced processes in various patterning operations. Here,
we present a new approach to thermomechanical patterning by implementing
a multitasking atomic force microscopy (AFM) probe: the functionalized
planar probes. In this method, we can generate a tunable thermal gradient
between the tip and the sample, wherein they remain in the noncontact
regime. In principle, the capillary instability provoked by the van
der Waals interaction yields a pull-off force toward the tip. Hence,
locally rising protrusions form features at any selected position
on a polymer surface without any chemical reaction or irreversible
transformation. These multitasking probe-integrated AFMs can pave
the way for a remarkable freedom in determining the operation regime
on submicrometer surface-patterning applications.
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Ciftci, H. Tunc; Van, Laurent Pham; Koopmans, Bert; Kurnosikov, Oleg (2019). Polymer Patterning with Self-Heating Atomic Force
Microscope Probes. ACS Publications. Collection. https://doi.org/10.1021/acs.jpca.9b06056