Andrew Gillies

Category: Research

Hard vs Soft Fibrillar Self-Cleaning

My paper on the self-cleaning of gecko adhesives was published in Applied Materials and Interfaces. We reported that for certain particle sizes and fiber diameters, both hard (polypropylene) and soft (PDMS) fibrillar adhesives recover adhesive capabilities to different degrees. An analysis of the contact strength between fibers, particles and substrates reveals that dry self-cleaning is

Cover of Advanced Functional Materials released

My paper on magnetically actuated ridges for particle capture and release was featured on the cover of Advanced Functional Materials. I generated the cover image using solidworks and a post rendering process.

Magnetically Actuated Ridges

My recent work on magnetically actuating an array of microridges has been published in Advanced Functional Materials. We have shown that by controlling the angle of the 325 micron long array elements, we can controllably adhere to a range of particle sizes. Here is a link to the article:

Dynamic Climbing Robot

Paul Birkmeyer and I have created a version of his CLASH robot that now includes footpads with synthetic gecko adhesive. CLASH can now rapidly climb steep acrylic up to angles of 75 degrees. Our work was published at IROS 2012.

CLASH: Climbing Vertical Cloth

My work on Paul Birkmeyers CLASH robot has been published in IROS 2011. During the development of CLASH, I assisted by testing the engagement properties of the feet on loose cloth substrates using a custom built 2 axis force displacement apparatus. Testing revealed that the foot-ankle linkage allowed for spines on the feet to engage