8 papers
Deep Indentation of Hyperelastic Materials Reveals Tip Independent Parabolic Force Depth Response via Strain Energy Delocalization
Mohammad Shojaeifard, Zhenwei Ma, K Jimmy Hsia +2
Indentation is a practical route for probing soft materials when standard tests are difficult, destructive, or cannot be performed in situ. Conventional indentation is usually inte…
Hollow Needle Puncture Mechanics for Biopsy Sampling
Yiting Wu, Frederic Lechenault, Matteo Ciccotti +1
Biopsy sampling relies on hollow needles that puncture soft tissues by propagating and opening a cylindrical crack, yet the mechanics governing this coring process remain only part…
Membrane Tension Governs Particle Wrapping-Unwrapping Transitions and Stalling
Yasin Ranjbar, Yujun Teng, Haleh Alimohamadi +3
Membrane wrapping controls nanoparticle uptake during endocytosis, whereas the reverse process of membrane unwrapping accompanies particle expulsion and membrane fusion events. Exi…
Hyperelastic characterization via deep indentation
Mohammad Shojaeifard, Mattia Bacca
Hyperelastic material characterization is crucial for understanding the behavior of soft materials -- such as tissues, rubbers, hydrogels, and polymers -- under quasi-static loadin…
Piercing soft solids: A mechanical theory for needle insertion
Stefano Fregonese, Mattia Bacca
In this paper we investigate the mechanical problem of piercing a soft solid body with a needle. This phenomenon is controlled by the critical condition of needle insertion. Needle…
Cutting Soft Matter: Scaling relations controlled by toughness, friction, and wear
Bharath Antarvedi Goda, Zhenwei Ma, Stefano Fregonese +1
Cutting mechanics of soft solids is gaining rapid attention thanks to its promising benefits in material characterization and other applications. However, a full understanding of t…