Author: Douglas Holmes
Prof. Holmes promoted to Associate Professor
Douglas Holmes, ENG, Mechanical Engineering and Materials Science & Engineering, investigates the mechanics, physics, and geometry of slender structures (typically comprising rods, plates, and shells), working to harness material and structural instability for advanced functionality. A past NSF CAREER Award recipient, he is supported by major grants through the NSF and Department of Defense and […]
Paper: Swelling effects on the adhesion
Swelling effects on localized adhesion of an elastic ribbon M. Curatolo , P. Nardinocchi , L. Teresi and D.P. Holmes Proceedings of the Royal Society A, 475(2225), 0067, (2019) Abstract: We investigate the adhesion mechanism between an elastic strip of vinylpolysiloxane bent in a racquet-like shape, and a thick elastomeric substrate with the aim to […]
Review Paper: Elasticity and Stability of Shape-Shifting Structures
Elasticity and Stability of Shape-Shifting Structures Douglas P. Holmes Current Opinion in Colloid and Interface Science, 40:118-137, (2019). Abstract: As we enter the age of designer matter — where objects can morph and change shape on command — what tools do we need to create shape-shifting structures? At the heart of an elastic deformation is […]
Xin Jiang Defends his Ph.D!
Congratulations to Dr. Xin Jiang for successfully defending his Ph.D. thesis entitled “Stability of Highly Nonlinear Structures: Snapping Shells and Elastogranular Columns” !
Paper: Buckling of geometrically confined shells
Buckling of geometrically confined shells Lucia Stein-Montalvo, Paul Costa, Matteo Pezzulla and Douglas P. Holmes Soft Matter, 15(6), 1215-1222, (2019). Abstract: We study the periodic buckling patterns that emerge when elastic shells are subjected to geometric confinement. Residual swelling provides access to range of shapes (saddles, rolled sheets, cylinders, and spherical sections) which vary in […]
Paper: Multistable Kirigami
Multistable kirigami for tunable architected materials Yi Yang, Marcelo A. Dias, and Douglas P. Holmes Physical Review Materials, 2, 110601(R) Abstract: In nature, materials such as ferroelastics and multiferroics can switch their microstructure in response to external stimuli, and this reconfiguration causes a simultaneous modulation of their material properties. Rapid prototyping technologies have enabled origami […]
Paper: Snapping of bistable, prestressed cylindrical shells
Snapping of bistable, prestressed cylindrical shells Xin Jiang, Matteo Pezzulla, Huiqi Shao, Tushar K. Ghosh, and Douglas P. Holmes, Europhysics Letters (EPL), 122, 6, (2018). Bistable shells can reversibly change between two stable configurations with very little energetic input. Understanding what governs the shape and snap-through criteria of these structures is crucial for designing devices […]
Paper: Bioinspired Electrically Activated Soft Bistable Actuators
Bioinspired Electrically Activated Soft Bistable Actuators Huiqi Shao, Shuzhen Wei, Xin Jiang, Douglas P. Holmes, and Tushar K. Ghosh Advanced Functional Materials, 18029999, (2018). Movement and morphing in biological systems provide insights into the materials and mechanisms that may enable the development of advanced engineering structures. The nastic motion of plants in response to environmental […]
Paper: Bistable Shells
Static Bistability of Spherical Caps Matteo Taffetani, Xin Jiang, Douglas P. Holmes, and Dominic Vella Proceedings of the Royal Socitey A, 474(2213), (2018). Depending on its geometry, a spherical shell may exist in one of two stable states without the application of any external force: there are two ‘self-equilibrated’ states, one natural and the other […]
Softbites: Elastogranularity & Root Growth
The soft matter blog “Softbites” recently highlighted our work on elastogranularity. The blog post was written by Adam Fortais, and nicely highlights the connection between elastogranular interactions and root growth. Blog post: https://softbites.org/2018/05/23/elastogranularity-and-how-soil-may-shape-the-roots-of-plants/ Longform version: https://artscicstra.wordpress.com/2018/05/16/elastogranularity-and-how-soil-shapes-the-roots-of-plants-continued/