(302) 831-4863 werrell@udel.edu

Alexander Liddle received his B.A. and D. Phil. degrees in Materials Science from the University of Oxford in 1986 and 1989 respectively. He spent the next decade at Bell Laboratories, where his primary efforts were directed towards the research, development and eventual commercialization of a novel electron-beam lithography technology. He subsequently became the leader of an optical telecommunications MEMS group before moving to Lawrence Berkeley National Lab. There, he led the nanofabrication group in the Center for X-ray optics, before becoming Lead Scientist of the Molecular Foundry nanofabrication user facility, where he was involved in research ranging from quantum computation to guided self-assembly. In 2006 he moved to NIST, where he is now a Senior Scientist and leader of the Nanofabrication Research Group in the Center for Nanoscale Science and Technology.  He has been acting Deputy Director of the Center for the past year.  He has published over 250 papers in areas ranging from electron-beam lithography to DNA-controlled nanoparticle assembly and is a fellow of the APS.  His current focus is on nanofabrication and self-assembly for nanomanufacturing.

Abstract for 2016 Materials Characterization Workshop at UD:

Nanoscale measurements via nanofabrication

The Center for Nanoscale Science and Technology is NIST’s nanotechnology user facility, enabling innovation by providing rapid access to the tools needed to make and measure nanostructures. We provide access in two ways, via the NanoFab and the NanoLab. In the NanoFab, researchers access a commercial state-of-the-art tool set at economical hourly rates, with help from the dedicated, full-time technical support staff.  In the NanoLab, new capabilities are developed and disseminated in a collaborative process, along strategic directions designed to address the broadest-based and most pressing problems confronting the nanotechnology user community.  In this talk, I will give a short introduction to the Center, and describe how users can access our capabilities.

The types of advanced nanofabrication methods that we develop can provide a unique set of tools for probing the behavior of nanostructures. I will illustrate this by describing briefly two of our current projects.  First, I will discuss our approach to the design and fabrication of a monolithic, closed liquid cell for in situ transmission electron microscopy, that allows researchers to study nanomaterials at both high spatial and spectroscopic resolution.  Second, I will describe how focused ion-beam fabrication with sub-nanometer control over topography can be used to build nanofluidic devices that enable rapid, accurate, and precise measurements of nanoparticle size distributions that can advance nanoparticle manufacturing.