Simon Beyer received his B.A.Sc and M.A.Sc from the University of British Columbia (UBC) in Electrical Engineering, and is currently pursuing his Ph.D. Simons research interestests primarily include nanomaterials and bio-technology. In the past he has utilized inkjet printing technology to deposit carbon nanotubes, controlling the chemical and environmental conditions to promote long-range alignment of the nanoparticles. In his most recent work Simon has developed a printing system capable of fabricating 3D hydrogel constructs for the purpose of tissue engineering.
Journal: Plant Methods, 7 (1): 1.
Date: Jan 25, 2011
Abstract: To apply inkjet micropatterning to plant studies, we have successfully delivered landmarks on ivy leaf surfaces and achieved high-resolution, two-dimensional monitoring of leaf expansion at different growing stages. The measurement is capable of reliably identifying the fine scale changes during plant growth. As well as delivering landmarks, this technology may be used to deliver microscale targeted biological components such as growth hormones, and possibly be used to pattern sensors directly on the leaves. Download
Journal: Langmuir, 28 (23): 8753-8759.
Date: May 9, 2012
Abstract: An inkjet printing procedure for depositing films of carbon nanotubes (CNTs) that exhibit a very high degree of long-range mutual alignment as well as a controlled orientation with respect to the printed geometry is presented. CNT self-assembly was induced by the intrinsic lyotropic liquid crystallinity of CNT suspensions. Sufficient concentrations are reached by matching the inkjet deposition rate to the numerically modeled local evaporation rate of the printed feature and enable the CNT suspension to be printed using standard inkjet printing. Surface alignment was verified using scanning electron microscopy (SEM) and polarized light microscopy. In addition, the bulk morphology was investigated and found to be composed of stacked planar layers that did not necessarily have the same long-range orientation found on the surface. The bulk morphology was characterized by removing layers through an elastomeric peeling process and by observing cross sections of the films using SEM. CNT concentration and length were spanned experimentally, and it was found that very short and very long CNTs as well as low concentration suspensions did not yield long-range alignment. Download