Group information session: 2pm 21 October

Prospective coursework MSc and research higher degree students are welcome to our group information session on Monday 21 October at 2pm. Meet outside the lifts on Level 5 of the David Caro (Physics) Building on the corner of Tin Alley and Swanston Streets in Parkville. :Link to map here.

ARC Centre of Excellence announced

Professors Ken Crozier and Ann Roberts are delighted to be part of a new ARC Centre of Excellence in Transformative Meta-Optical Systems (TMOS). Led from ANU, TMOS will develop the next-generation of miniaturised optical systems with functionalities beyond what is conceivable today. By harnessing the disruptive concept of meta-optics, the Centre will overcome complex challenges in light generation, manipulation and detection at the nanoscale. The Centre brings together a trans-disciplinary team of world-leaders in science, technology and engineering to deliver scientific innovations in optical systems for the Fourth Industrial Revolution.The research outcomes will underpin future technologies, including real-time holographic displays, artificial vision for autonomous systems to see the invisible, and ultra-fast light-based WiFi. Ken is the Deputy Director of the Centre and Ann will co-lead the Centre’s Detection Theme.

Microspectrometer paper published in Optica

Members of the Crozier group, led by Jasper Cadusch, have had their article ‘Silicon microspectrometer chip based on nanostructured fishnet photodetectors with tailored responsivities’ and machine learning published in Optica. In their article they describe using “fishnet pixels” to form a microspectrometer chip and demonstrate the reconstruction of four test spectra using a two-stage supervised machine-learning-based reconstruction algorithm. Link to the full article here.

Article in Physical Review Letters

Tim Davis and Ann Roberts,with collaborators Daniel Gomez (RMIT) and Fatima Eftekhari (MCN), have demonstrated asymmetric transfer functions in metasurfaces in research published in Physical Review Letters. The results reported set the direction for future developments of metasurfaces for optical signal processing. Full article can be found here.

Review in Advanced Optical Materials

Lukas Wesemann, Tim Davis, Jingchao Song and Ann Roberts contributed to the new review article ‘Plasmonic Near‐Complete Optical Absorption and Its Applications’ that was recently published in Advanced Optical Materials. It reports recent progress on the development of metasurfaces and thin film structures that produce strong absorption bands in the visible and longer wavelength regions of the electromagnetic spectrum, due in part to the excitation of plasmonic resonances. The article can be downloaded here.

New ACS Photonics publication

Group members Tim Davis and Ann Roberts are co-authors on a paper published in ACS Photonics on 22 January: Plasmene Metasurface Absorbers: Electromagnetic Hot Spots and Hot Carriers. The research, led by our collaborator Daniel Gomez (RMIT University) showed that a thin sheet of a tightly packed, self-assembled, two-dimensional lattice of metal nanoparticles, called plasmene, supported by a subwavelength dielectric film deposited on top of a mirror can be used in surface-enhanced spectroscopy and in the generation of plasmonic hot carriers. More information and link to the article here.

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