dorsal/arxiv
View SchemaMolecularly Thin Polyaramid Nanomechanical Resonators
| Authors | Hagen Gress, Cody L. Ritt, Inal Shomakhov, Kaan Altmisdort, Michelle Quien, Zitang Wei, John R. Lawall, Narasimha Boddeti, Michael S. Strano, J. Scott Bunch, Kamil L. Ekinci |
|---|---|
| Categories | |
| ArXiv ID | 2601.10633vv2 |
| URL | https://arxiv.org/abs/2601.10633 |
| DOI | 10.1021/acs.nanolett.5c04440 |
| Journal | Nano Letters 2025, 25 (50) |
| License | http://creativecommons.org/licenses/by/4.0/ |
Abstract
Two-dimensional polyaramids exhibit strong hydrogen bonding to create molecularly thin nanosheets analogous to graphene. Here, we report the first nanomechanical resonators made out of a two-dimensional polyaramid, 2DPA-1, with thicknesses as small as 8 nm. To fabricate these molecular-scale resonators, we transferred nanofilms of 2DPA-1 onto chips with previously etched arrays of circular microwells. We then characterized the thermal resonances of these resonators under different conditions. When there is no residual gas inside the 2DPA-1-covered microwells, the eigenfrequencies are well-described by a tensioned plate theory, providing the Young's modulus and tension of the 2DPA-1 nanofilms. With gas present, the nanofilms bulge up and mechanical resonances are modified due to the adhesion, bulging and slack present in the system. The fabrication and mechanical characterization of these first 2DPA-1 nanomechanical resonators represent a convincing path toward molecular-scale polymeric NEMS with high mechanical strength, low density, and synthetic processability.
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"abstract": "Two-dimensional polyaramids exhibit strong hydrogen bonding to create molecularly thin nanosheets analogous to graphene. Here, we report the first nanomechanical resonators made out of a two-dimensional polyaramid, 2DPA-1, with thicknesses as small as 8 nm. To fabricate these molecular-scale resonators, we transferred nanofilms of 2DPA-1 onto chips with previously etched arrays of circular microwells. We then characterized the thermal resonances of these resonators under different conditions. When there is no residual gas inside the 2DPA-1-covered microwells, the eigenfrequencies are well-described by a tensioned plate theory, providing the Young\u0027s modulus and tension of the 2DPA-1 nanofilms. With gas present, the nanofilms bulge up and mechanical resonances are modified due to the adhesion, bulging and slack present in the system. The fabrication and mechanical characterization of these first 2DPA-1 nanomechanical resonators represent a convincing path toward molecular-scale polymeric NEMS with high mechanical strength, low density, and synthetic processability.",
"arxiv_id": "2601.10633",
"authors": [
"Hagen Gress",
"Cody L. Ritt",
"Inal Shomakhov",
"Kaan Altmisdort",
"Michelle Quien",
"Zitang Wei",
"John R. Lawall",
"Narasimha Boddeti",
"Michael S. Strano",
"J. Scott Bunch",
"Kamil L. Ekinci"
],
"categories": [
"cond-mat.mes-hall",
"cond-mat.soft",
"cond-mat.stat-mech"
],
"doi": "10.1021/acs.nanolett.5c04440",
"journal_ref": "Nano Letters 2025, 25 (50)",
"license": "http://creativecommons.org/licenses/by/4.0/",
"title": "Molecularly Thin Polyaramid Nanomechanical Resonators",
"url": "https://arxiv.org/abs/2601.10633",
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