Author Archives: thanhipas
A new biochemical sensor using specialty optical fibre has been developed by an IPAS team at the University of Adelaide. This new sensor is more sensitive than previous designs while still being fully fibre integrated, meaning it can be used directly with standard optical equipment. The sensor has advantages of bio-compatibility, small size, and low cost, yet is robust and simple. It has good potential for biochemical detection in applications that require real-time monitoring and in-field detection. Congratulations Stephen Warren-Smith and team!
High-sensitivity Sagnac-interferometer biosensor based on exposed core micro structured optical fiber
Xuegang Li, Linh V.Nguyen, Yong Zhao, Heike Ebendorff-Heidepriem, Stephen C. Warren-Smith
We are very proud to announce that the first test builds from the IPAS 3D Metal Printing Facility have been completed.
The control levers are made from 316 Stainless Steel, and Eiffel Towers from Aluminium.
We have 3 Renishaw AM400 printers that will be running 316 Stainless Steel, Aluminium and Titanium in addition to the ProX200 printer on North Terrace.
Strong photon-photon interactions are a key requirement for numerous quantum communication and computation protocols. Generation of photon-photon interactions mediated by atomic vapours in hollow waveguides has shown great promise, with their efficiencies enhanced by the tight transverse confinement and extended interaction length. We demonstrate, both experimentally and theoretically, the strength of such interactions inside a series of hollow-core photonic crystal fibres and show they only scale with the optical mode diameter, not mode area as might be initially expected, a result of atomic motion within the waveguides. This insight will allow waveguides to be designed to target specific photon-photon interaction strengths.
Engineering Photon-Photon Interactions within Rubidium-Filled Waveguides
C. Perrella, P. S. Light, S. Afshar Vahid, F. Benabid, and A. N. Luiten
Phys. Rev. Applied 9, 044001
Inspiring transdisciplinary photonics researchers, led by Dr Jiawen Li, have invented a world-first tiny fibre-optic probe that can simultaneously measure temperature and see deep inside the body. Combining optical imaging and sensing technologies into a single-fibre-based probe will 1) enable researchers to accurately position sensors under real-time co-localized image guidance and 2) achieve simultaneous imaging and sensing in vivo, which are not accessible using present approaches. Within a week, this paper has reached Altmetric score 89 and ranked No.1 out of all outputs of similar age from Optics Letters.
Miniaturized single-fiber-based needle probe for combined imaging and sensing in deep tissue
Jiawen Li, Erik Schartner, Stefan Musolino, Bryden C. Quirk, Rodney W. Kirk, Heike Ebendorff-Heidepriem, and Robert A. McLaughlin
Opt. Lett. 43, 1682-1685 (2018)
To elaborate on the IPAS’s vision and research program, Dr Ben Sparkes, who is working on quantum atom-light interactions at IPAS, was invited for an interview with Radio Adelaide’s Subatomic program with Rohan Neagle. Dr Sparkes discussed the quantum optics research taking place at IPAS and its potential to increase the distance of absolutely-secure quantum communications using our novel hollow-core optical fibres.
For the interview podcast, please click here.
Congratulations Prof Andre Luiten for contributing to outstanding research in radio-astronomy. A large team demonstrated for the first time that a clock signal could be sent along 300km of optical fibre and be recovered at the end of the line with very little noise. This enabled a special type of radio-astronomy called Very-Long-Baseline Interferometry (VLBI).
This publication received coverage from several major media outlets such as Business Wire, Science Daily and Photonics Online, potentially reaching over 15 million readers.
Business Wire: https://www.businesswire.com/news/home/20180201005795/en/New-Telecomm
Science Daily: https://www.sciencedaily.com/releases/2018/02/180201104549.htm
Photonics Online: https://www.photonicsonline.com/doc/new-use-for-telecommunications-networkshelping-scientists-peer-into-deep-space-0001
Prof Andre Luiten explained that IPAS’s vision is about exploiting the power of light, to make the world healthier, wealthier and safer. He particularly focused on the critical need for pathways to translate research outcomes from the lab into the real-world.
The segment highlighted two specific projects from the Precision Measurement Group:
The Quantum Mechanics project led by Dr Ben Sparkes, looking at ways to use photonics, or the technology that allows the generation and control of light, to protect sensitive data: a critical feature in applications such as defence and banking.
The Sapphire Clock team, led by Prof Andre Luiten and A/Prof Martin O’Connor, is building a clock so accurate that it only loses a second once every 40 million years. This has a very important application in supporting Australia’s defence by allowing a performance increase of the Jindalee Over the Horizon Radar.
On Friday 16 March, IPAS was delighted to host a group of 1st year physics students. The group was organised by Miss Lily Taylor who was recently an IPAS Summer scholarship winner and has followed this up with a third year project candidate with the Precision Measurement Group. The students, welcomed by Drs Ben Sparkes and Chris Perrella to the Optics Labs, were inspired by cutting edge projects as well as a learning experience from IPAS PhD candidates Sarah Scholten and Nathanial Wilson. The students were then guided to see the state-of-the-art fabrication facilities and equipment such as the high-tech 3D Metal and Ceramic printer and 5–Axis Ultrasonic Mill, with expert commentary from Mr Evan Johnson and Mr Lijesh Thomas. All students showed great interest in the science through constant interactive enquiries with leading researchers and experienced technicians. All the best to the 1st year physics students, we hope this experience will continuously develop your passion for science and look forward to welcoming you to our IPAS community in the future!
Fungal infections are a serious risk-factor faced by hospital patients who have compromised immune-systems, such as those undergoing organ or bone-marrow transplants, chemotherapy, or those with HIV/AIDS. Fungi rely on specific enzymes to build and maintain a strong and well-functioning cell membrane. We have taken an atomic-resolution snapshot of one such enzyme in action, such that we can now see the full process by which it catalyses the first step in the synthesis of an essential cell-membrane component. This information is invaluable for understanding how fungi survive and grow, and useful for considering when designing new antifungal medications.
Structure of Aspergillus fumigatus Cytosolic Thiolase: Trapped Tetrahedral Reaction Intermediates and Activation by Monovalent Cations.
Andrew C. Marshall, Charles S. Bond‡, and John B. Bruning
ACS Catal., 2018, 8 (3), pp 1973–1989
On Thursday 22 February 2018, IPAS was delighted to host a group of SA Physic Teachers representing schools from Thebarton Senior College, Woodville High, Prince Alfred College, Seaton High School and Gleeson College.
The group was welcomed and guided through the Precision Measurement Group Optics Labs by Drs Ben Sparkes and Chris Perrella. The physic teachers were impressed by the demonstration of novel gas sensing methods and laser radio outreach activity.
All the best for our physics teachers. We hope you enjoyed our IPAS Labs tour which could expand your knowledge about the different areas of research involving physics and will help promote future students to study physics in the future.