Optics at the nanoscale: physics, devices and applications
Grant number: FT140100577 | Funding period: 2015 - 2019
This project aims to harness light-matter interactions at the nanoscale for the development of new photonic devices for imaging and optical manipulation. Novel photodetectors that operate from visible to infrared wavelengths will be developed, enabled by sub-wavelength nanostructures. These could form the basis for digital cameras with multispectral imaging capabilities, for example, for biomedical imaging, food quality control and remote sensing. Nanostructures will be developed that concentrate light to nanoscale spots, enabling the trapping of single molecules and nanoparticles. This project aims to educate the next generation of Australian optical scientists and engineers, building the h..View full description
Related publications (36)
Visible to long-wave infrared chip-scale spectrometers based on photodetectors with tailored responsivities and multispectral filters
Jasper J Cadusch, Jiajun Meng, Benjamin J Craig, Vivek Raj Shrestha, Kenneth B Crozier
Chip-scale microspectrometers, operational across the visible to long-wave infrared spectral region will enable many remote sensin..
Mid- to long-wave infrared computational spectroscopy with a graphene metasurface modulator.
Vivek Raj Shrestha, Benjamin Craig, Jiajun Meng, James Bullock, Ali Javey, Kenneth B Crozier
In recent years there has been much interest concerning the development of modulators in the mid- to long-wave infrared, based on ..
Mid- to long-wave infrared computational spectroscopy using a subwavelength coaxial aperture array
Benjamin J Craig, Jiajun Meng, Vivek Raj Shrestha, Jasper J Cadusch, Kenneth B Crozier
Miniaturized spectrometers are advantageous for many applications and can be achieved by what we term the filter-array detector-ar..
Vertical Ge-Si Nanowires with Suspended Graphene Top Contacts as Dynamically Tunable Multispectral Photodetectors
Shi Qiang Li, Amit Solanki, Jacopo Frigerio, Daniel Chrastina, Giovanni Isella, Changxi Zheng, Arman Ahnood, Kumaravelu Ganesan, Kenneth B Crozier
Numerous applications would be enabled by pixels for multispectral imaging whose spectral responses can be dynamically tuned and t..
Controlling the Light Absorption in a Photodetector Via Nanowire Waveguide Resonances for Multispectral and Color Imaging
Kenneth B Crozier, Kwanyong Seo, Hyunsung Park, Amit Solanki, Shi-Qiang Li
The responsivity spectrum of a photodetector is one of its key specifications. It ultimately originates from the combination of th..
Polarization-resolved black phosphorus/molybdenum disulfide mid-wave infrared photodiodes with high detectivity at room temperature
James Bullock, Matin Amani, Joy Cho, Yu-Ze Chen, Geun Ho Ahn, Valerio Adinolfi, Vivek Raj Shrestha, Yang Gao, Kenneth B Crozier, Yu-Lun Chueh, Ali Javey
Infrared photodetectors are currently subject to a rapidly expanding application space, with an increasing demand for compact, sen..
Experimental demonstration of infrared spectral reconstruction using plasmonic metasurfaces
Benjamin Craig, Vivek Raj Shrestha, Jiajun Meng, Jasper J Cadusch, Kenneth B Crozier
We computationally reconstruct short- to long-wave infrared spectra using an array of plasmonic metasurface filters. We illuminate..
Direct Particle Tracking Observation and Brownian Dynamics Simulations of a Single Nanoparticle Optically Trapped by a Plasmonic Nanoaperture
Zhe Xu, Wuzhou Song, Kenneth B Crozier
Optical trapping using plasmonic nanoapertures has proven to be an effective means for the contactless manipulation of nanometer-s..
Harnessing the Interplay between Photonic Resonances and Carrier Extraction for Narrowband Germanium Nanowire Photodetectors Spanning the Visible to Infrared
Amit Solanki, Shiqiang Li, Hyunsung Park, Kenneth B Crozier
At visible wavelengths, photodetection in three channels (red, green, and blue) enables color imaging. Yet the spectra of most mat..
Electrical tuning of reflectance of graphene metasurface for unpolarized long wavelength infrared light
VR Shrestha, Y Gao, M Amani, J Bullock, A Javey, KB Crozier
We demonstrate a graphene-metal metasurface for unpolarized long wavelength infrared light with electrically-tunable reflectance. ..
Experimental Demonstration of Mid-Infrared Computational Spectroscopy with a Plasmonic Filter Array
Benjamin Craig, Vivek Raj Shrestha, Jiajun Meng, Kenneth B Crozier
We demonstrate mid-infrared plasmonic filters. We experimentally determine the spectrum of a mid-infrared light source using an al..
Quantum mechanical effects in plasmonic structures with subnanometre gaps
Wenqi Zhu, Ruben Esteban, Andrei G Borisov, Jeremy J Baumberg, Peter Nordlander, Henri J Lezec, Javier Aizpurua, Kenneth B Crozier
Metallic structures with nanogap features have proven highly effective as building blocks for plasmonic systems, as they can provi..
Vertical Germanium Nanowire Photodetectors with Suspended Graphene Top Contact
S LI, J Frigerio, D Chrastina, G Isella, A Solanki, W Song, C Zheng, KB Crozier
We demonstrate photodetectors for visible-to-infrared imaging, comprising vertical germanium nanowires on a silicon substrate, wit..
Sensing pH in a microfluidic channel with a lab-on-a-smartphone fluorescence spectrometer
J Chen, R Wang, A Renganathan, A Rattan, X Meng, RR Unnithan, KB Crozier
We demonstrate a smartphone unit for measuring pH. The dye-mixed sample is input to a microfluidic chip and inserted into the unit..