Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 27, Pages 14734-14742Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b02567
Keywords
surface tension; modulus; bending; hydrogels; thin film
Funding
- Army Research Office [W911NF-11-1-0080]
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We describe bending by liquid/liquid or liquid/air interfaces as a simple and broadly applicable technique for measuring the elastic modulus of thin elastic sheets. The balance between bending and surface energies allows for the characterization of a wide range of materials with moduli ranging from kilopascals to gigapascals in both vapor and liquid environments, as demonstrated here by measurements of both soft hydrogel layers and stiff glassy polymer films. Compared to existing approaches, this method is especially useful for characterizing soft materials (
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