# Mechanics of Heterogeneous Adhesion in Blistered Thin Films on Soft Solids: From Peeling to Rolling and the Discontinuous Transition Between

> **NSF 01002526DB NSF RESEARCH & RELATED ACTIVIT** · Syracuse University (NY) · $335,475

## Abstract

Blisters, tiny air pockets that form when adhesion fails between two surfaces, are a common but poorly understood phenomenon, appearing in contexts ranging from smartphone screen protectors to laminated aerospace composites. In soft adhesive systems, the removal of blistered films often leads to an unexpected transition from peeling to rolling, where one edge of the film detaches as the opposite edge spontaneously reattaches. This process is marked by discrete jumps in adhesion force and complex interfacial behavior that cannot be explained by traditional peeling mechanics. The goal of this project is to develop a comprehensive understanding of this peel-to-roll transition using a combination of experiments, analytical models, and numerical simulations. By revealing how geometric confinement and interfacial deformation can create spatially heterogeneous adhesion landscapes even between homogeneous materials, the research seeks to establish new strategies for controlling adhesion in soft and stretchable devices. Educational and outreach activities include a hands-on "Sticky Tapes" exhibit for children, a summer workshop for high school students, and research engagement opportunities for undergraduates.

This project will investigate the mechanics of multi-step, heterogeneous adhesion through a detailed study of thin, blistered films partially bonded to soft substrates. Precision experiments will be used to identify the critical blister contact length that triggers the onset 

## Key facts

- **NSF award ID:** 2515674
- **Awardee organization:** Syracuse University (NY)
- **SAM.gov UEI:** C4BXLBC11LC6
- **PI:** Anupam Pandey
- **Primary program:** 01002526DB NSF RESEARCH & RELATED ACTIVIT
- **All programs:** SOLID MECHANICS, MATERIALS DESIGN
- **Estimated total:** $335,475
- **Funds obligated:** $335,475
- **Transaction type:** Standard Grant
- **Period:** 09/01/2025 → 08/31/2028

## Primary source

NSF Award Search: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2515674

## Citation

> US National Science Foundation, Award 2515674, Mechanics of Heterogeneous Adhesion in Blistered Thin Films on Soft Solids: From Peeling to Rolling and the Discontinuous Transition Between. Retrieved via AI Analytics 2026-06-06 from https://api.ai-analytics.org/grant/nsf/2515674. Licensed CC0.

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