Lab of Bioinspired Manufacturing and Mechanics

 

Research

Our long-term research goal is to design unprecedented materials and structures to address grand engineering challenges to enable a resilient and sustainable society. Inspired by Nature, we create synthetic materials and structures with uncoventional properties with self-assembly and additive manufacturing technologies, and then understand their properties with theories, experiments, and computations.

Current research topics

   1. Mechanics of bioinspired smart materials


Mechanics of self-healing polymers

A general interfacial self-healing model

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Mechanics of self-healing polymer networks crosslinked by dynamic bondsJournal of the Mechanics and Physics of Solids, 121, 409-431, 2018.
Interfacial self-healing of polymers crosslinked by nanoparticles
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Interfacial Self-healing of Nanocomposite Hydrogels: Theory and ExperimentJournal of the Mechanics and Physics of Solids, 109, 288-306, 2017.
Light-activated interfacial self-healing
-Mechanics of light-activated self-healing polymer networks, Journal of the Mechanics and Physics of Solids, 124, 643-662, 2019.
Electrically-assisted interfacial bonding
-Mechanics of Electrophoresis-Induced Reversible Hydrogel Adhesion,
Journal of the Mechanics and Physics of Solids, 125, 1-21, 2019.
Bulk hysteresis and healing of nanocomposite gels

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A Constitutive Model of Nanocomposite Hydrogels with Nanoparticle CrosslinkersJournal of the Mechanics and Physics of Solids, 96, 127-147, 2016.

Mechanics of mechanochromic polymers

-Mechanics of Mechanochemically Responsive Elastomers, Journal of the Mechanics and Physics of Solids, 82, 320–344 (2015).
-Cephalopod-inspired Design of Electro-mechano-chemically Responsive Elastomers for On-demand Fluorescent Patterning, Nature Communications, 5, 4899 (2014).
 

 

2. Additive manufacturing


Smart lightweight structures
-Additive Manufacturing of Self-Healing Elastomers, NPG Asia Materials, 2019.
-Magnetoactive Acoustic Metamaterials, Advanced Materials, 1706348, 2018.
-Highly-stretchable 3D-architected Mechanical Metamaterials,
Scientific Reports, 6, 34147, 2016.
-Lightweight Mechanical Metamaterials with Tunable Negative Thermal Expansion, Physical Review Letters, 117, 175901, 2016.

 

3. Bacteria-material interactions


Anti-biofouling

-Bioinspired Surfaces with Dynamic Topography for Active Control of Biofouling, Advanced Materials, 25, 1430 (2013).
-Soft Robotic Concepts in Catheter Design: an On-demand Fouling-release Urinary Catheter, Advanced Healthcare Materials, 3. 1588-1596 (2014).

 

 

Recent research topics

Dielectric elastomers

 

Creasing to cratering instability 

-Creasing to Cratering instability in polymers under ultrahigh electric fields, Physical Review Letters, 106, 118301 (2011).
-Dynamic Electrostatic Lithography: Multiscale On-demand Patterning on Large-Area Curved Surfaces, Advanced Materials, 24, 1947-1951 (2012).

 

Electro-cavitation instability 

-Bursting Drops in Solid Dielectrics Casued by High Voltages, Nature Communications, 3, 1157 (2012). 

 

Invited review: Harnessing Large Deformation and Instabilities of Soft Dielectrics: Theory, Experiment and Application, Applied Physics Review, 1, 021304 (2014).

 
   Surface instabilities


Phase diagram of surface instabilities
-A Three-Dimensional Phase Diagram of Growth-Induced Surface Instabilities, Scientific Reports, 5, 8887 (2015).
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Phase Diagrams of Instabilities in Compressed Film-Substrate SystemsJournal of Applied Mechanics81, 051004 (2014).

Invited review: Beyond Wrinkles: Multimodal Surface Instabilities for Multifunctional Patterning, MRS Bulletin, 41, 115-122 (2016).

 

© 2015-2019, LBMM@USC.