دورية أكاديمية
Elasto-plastic effects on shape-shifting electron-beam-patterned gel-based micro-helices.
| العنوان: | Elasto-plastic effects on shape-shifting electron-beam-patterned gel-based micro-helices. |
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| المؤلفون: | Wu X; Department of Chemical Engineering & Materials Science, Stevens Institute of Technology, Hoboken, NJ, USA. mlibera@stevens.edu., Teng F; Department of Chemical Engineering & Materials Science, Stevens Institute of Technology, Hoboken, NJ, USA. mlibera@stevens.edu.; presently with the Brookhaven National Laboratory, Upton, NY, USA., Firlar E; Rutgers CryoEM & Nanoimaging Facility and Institute for Quantitative Biomedicine, Rutgers University, Piscataway, NJ, USA.; presently with Bristol Myers Squibb, Molecular Structure & Design, Princeton, NJ, USA., Zhang T; Department of Mechanical and Aerospace Engineering, Syracuse University, Syracuse, NY, USA., Libera M; Department of Chemical Engineering & Materials Science, Stevens Institute of Technology, Hoboken, NJ, USA. mlibera@stevens.edu. |
| المصدر: | Materials horizons [Mater Horiz] 2024 Jul 15; Vol. 11 (14), pp. 3427-3436. Date of Electronic Publication: 2024 Jul 15. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Royal Society of Chemistry Country of Publication: England NLM ID: 101623537 Publication Model: Electronic Cited Medium: Internet ISSN: 2051-6355 (Electronic) Linking ISSN: 20516347 NLM ISO Abbreviation: Mater Horiz Subsets: PubMed not MEDLINE; MEDLINE |
| أسماء مطبوعة: | Original Publication: Cambridge : Royal Society of Chemistry, [2014]- |
| مستخلص: | Shape-shifting helical gels have been created by various routes, notably by photolithography. We explore electron-beam lithography as an alternative to prescribe microhelix formation in tethered patterns of pure poly(acrylic acid). Simulations indicate the nanoscale spatial distribution of deposited energy that drives the loss of acid groups and crosslinking. Upon exposure to buffer, a patterned line converts to a 3D helix whose cross section comprises a crosslinked and hydrophobic core surrounded by a high-swelling pH-responsive corona. Through-thickness asymmetries generate out-of-plane bending to drive helix formation. The relative core and corona fractions are determined by the electron dose which in turn controls the helical radius and pitch. Increasing pH substantially raises the swelling stress and the rod elongates plastically. The pitch concurrently changes from minimal to non-minimal. The in-plane asymmetry driving this change can be attributed to shear-band formation in the hydrophobic core. Subsequent pH cycling drives elastic cycling of the helical properties. These findings illustrate the effects of elastoplastic deformation on helical properties and elaborate unique attributes of electron lithography as an alternate means to create shape-shifting structures. |
| تواريخ الأحداث: | Date Created: 20240507 Latest Revision: 20240715 |
| رمز التحديث: | 20240715 |
| DOI: | 10.1039/d4mh00208c |
| PMID: | 38712865 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 2051-6355 |
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| DOI: | 10.1039/d4mh00208c |