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Graham L.W. Cross

I am a Professor in Physics at Trinity College in Dublin and a PI at Trinity’s AMBER/CRANN Nanotechnology Centre. My research concentrates on the mechanical behaviour of matter at the nanoscale. 


Our group investigates nanoscale moulding science for nanoimprint of biomedical and other surfaces, self-assembly of two-dimensional materials for THz nanoelectromechanical systems (NEMS), and free-volume engineering in non-equilibrium materials including amorphous pharmaceuticals, organic electronics and ionic energy materials.  To support these activities, we have developed methods of hard material processing including implant ion masking for diamond injection moulds, embossing stamps, and flat punch indenters.  This technology has formed the basis for Adama Innovations, a company I spun out in 2014 and dedicated to the production of diamond NEMS.  My group is currently extending our techniques to realize advanced roll-to-roll (R2R) nanoimprint dies that enable high-throughput fabrication of tissue scaffolds with nanoscale to macroscale features via a novel combination of nanoimprint and lamination additive manufacture.

I completed my doctorate at McGill University, Canada in experimental condensed matter physics.  My thesis was on fundamental mechanisms of crystal deformation plasticity at the atomic scale. Before I jointed Trinity College, I worked at IBM Research in Zurich as part of the Millipede team.  Millipede was a nano-electromechanical (NEMS) data storage system based on bits formed by nanoscale thermomechanical polymer indentation.  I characterized the read/write/erase operation window of the device.  

Picotechnology for Nuclear Fusion

Positions available (Summer 2024)

We are seeking highly qualified postdoctoral applicants to explore a new frontier in sub-atomic control, using nanotechnology to significantly enhance close-encounter nuclear reactions at the picometer scale. Candidates should have a Ph.D. in vacuum surface science, ion beam analysis or related field and be passionate about finding solutions to energy and climate challenges facing the world.   Email me if interested. 

Past Group Research Highlights

Time lapse sequence of the growth of self assembling bilayer graphene ribbons. The video consists of images captured by AFM over a 14 day period. The ribbon in the lower left is able to grow over a subsurface defect before stopping, while the ribbon growing towards the right of the image halts upon encountering the edge of the host graphene sheet.

Annett J., Cross, G. L. W., Self-assembly of graphene ribbons by spontaneous self-tearing and peeling from a substrate, Nature 535, 271-275, (2016).

In situ TEM visualization of 15 nm single crystal diamond-on-diamond sliding contact with over 10 GPa contact pressure.  With R. Carpick, U. Pennsylvania.

Installation of PTMTEC roll-to-roll (R2R) nanoimprint and additive manufacture lamination unit featuring 10 cm wide web and up to 5 m/min operation.  

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