In collaboration with Ali Javey’s group at Berkeley, Ken and Vivek have coauthored a paper Polarization-resolved black phosphorus/molybdenum disulfide mid-wave infrared photodiodes with high detectivity at room temperature in Nature Photonics published on 27 August. The paper describes the investigation of black phosphorous (bP)/MoS2 heterojunction photodiodes as mid-wave infrared (MWIR) detector and it is shown that these devices can be competitive with conventional MWIR photodetectors. For more information see the original article.
In work led by Heyou Zhang in Paul Mulvaney’s group in the School of Chemistry and the ARC Centre of Excellence for Exciton Science, Ann Roberts and former student Jasper Cadusch co-authored a paper published today in ACS Nano, Direct Assembly of Large Area Nanoparticle Arrays. This work looks at utilising template-directed electrophoretic assembly of gold nanoparticles.
Members of Ken’s group, in collaboration with Ali Javey’s group at Berkeley, have published a paper, Solution-Synthesized High-Mobility Tellurium Nanoflakes for Short-Wave Infrared Photodetectors, in ACS Nano on 18 June. The paper describes optical characterization of Te crystals and the demonstration of their use in short wave infrared photodetectors.
Kelvin Zhu, Ken and Wuzhou Song are authors on a paper published in ACS Photonics today, Direct Particle Tracking Observation and Brownian Dynamics Simulations of a Single Nanoparticle Optically Trapped by a Plasmonic Nanoaperture. The article describes simulations that were performed to gain insight into optical trapping by nanostructures that were combined with stochastic Brownian diffusion to determine particle trajectories. This research will be a valuable tool for the better understanding of fundamental mechanisms underlying nanostructure-based trapping
Renovations on our Level 5 laboratories are now complete! Funding from the Faculty of Science and School of Physics supported this valuable initiative that will support our research and research training.
Laser Speckle Contrast Image of drying Liquol. (E Miles, PhD thesis, 2018)
Congratulations to Elaine Miles who has successfully completed all requirements for her PhD. As per her citation Elaine investigated the extension of laser speckle based imaging methods to new problems in cultural materials conservation. She showed that it was possible to image underdrawings, obtain in-situ information about canvas paintings and study the temporal behaviour of drying paint. Her research will inform new approaches to characterising cultural materials.
Elaine is now forging a successful career at the Bureau of Meteorology where she is a Senior Ocean Climatologist.
A new approach to in-plane surface plasmon polariton detection is demonstrated in a new article in Advanced Materials Technology by Dr Eugene Panchenko, other members of the group and collaborators at Tel Aviv University. The design is based on metal–semiconductor–metal photodetectors that are acknowledged as having one of the best speed characteristics among photodetectors. The technique has the potential to enable the integration of surface plasmons as signal carriers in future high-speed optoelectronic integrated circuits. More information here.
On 14 November, the 39th Session of the UNESCO General Conference proclaimed the date of May 16th as the International Day of Light. The proclamation of this annual International Day will enable global appreciation of the central role that light and light-based technologies play in the lives of the citizens of the world in areas of science, technology, culture, education, and sustainable development. For more info see lightday.org.
