Monthly Archives: July 2016

Dr Peipei Jia to give invited talk in Singapore

31 Jul-4 Aug 2017:

CNBP Research Fellow, Dr Peipei Jia will visit Singapore and give an invited talk at a special workshop session (Lab-in-a-Fibre Technologies) at CLEO-PR, OECC and PGC 2017 which will be held at the Sands Expo and Convention Centre, 31 July-4 August 2017.

The conference combines the following three major international conferences, which widely covers the ‘Photonics’ field  from devices to systems and networks.
• The 12th Conference on Lasers and Electro-Optics Pacific Rim(CLEO-PR 2017)
• The 22nd OptoElectronics and Communications Conference (OECC 2017)
• The 5th Photonics Global Conference 2017 (PGC 2017)

Dr Jia will talk about plasmonic fiber techniques including recent progress.

The title of his talk is ‘Plasmonic Optical Fiber Engineering: From Template Transfer to Nano imprint’.

Cell colour technology shortlisted for Eureka honours

OLYMPUS DIGITAL CAMERA29 July 2016:

Professor Ewa Goldys, CNBP Deputy Director and Dr Martin Gosnell, Quantitative Pty Ltd, have been selected as finalists in the prestigious Australian Museum Eureka Prizes, for their work in developing technology that enables colour to be used as a uniquely powerful diagnostic tool in medicine.

Selected in the award category ‘2016 ANSTO Eureka Prize for Innovative Use of Technology’, Goldys and Gosnell use modern day microscopes and powerful computer analysis to explore the subtle colour differentiations of cells and tissue, down to a molecular level.

“With our pioneering hyperspectral imaging technique we are able to unveil the biomolecular composition of cells and their nanoscale contents,” said Ewa Goldys, Deputy Director of the ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP) and a Professor at Macquarie University.

“This lets us distinguish between healthy and diseased cells in areas as diverse as embryology, neurodegeneration, cancer and diabetes. Key is the great potential of this technology to impact positively on lives – supporting clinicians in making improved diagnosis and health decisions for patients.”

Noting that it was a pleasure and a privilege to be nominated as a Eureka finalist, Goldys concluded, “Our innovative methodology is letting us probe the very limits of our understanding of life at the molecular level. It’s important that we share these amazing discoveries with the public and the community at large – the Eureka Prizes are the perfect platform to help support us in these efforts.”

Dr Martin Gosnell, CNBP research affiliate and Managing Director at Quantitative Pty Ltd was equally pleased by the Eureka nomination.

“I’m absolutely delighted that our research has been recognised at this level. By using the colour of light from cells and tissues, we are pushing the very frontiers of molecular exploration and measurement.”

“Our high-powered data analysis and imaging expertise is truly opening up new windows into the body.”

The Eureka Prizes are presented by the Australian Museum and reward excellence in research and innovation, science communication and journalism, leadership and school science.

Prize winners will be announced at an Awards Dinner at Sydney Town Hall on Wednesday 31 August 2016.

Third harmonic generation of ECFs

Stephen Warren-Smith28 July 2016:

Researchers from CNBP and The Institute of Photonic Technology (IPHT), have had a paper published today on the topic of third harmonic light generation using ECFs.

Journal: Optics Express.

Publication title: Third harmonic generation in exposed-core microstructured optical fibers.

Authors: Stephen C. Warren-Smith, Jingxuan Wie, Mario Chemnitz, Roman Kostecki, Heike Ebendorff-Heidepriem, Tanya M. Monro and Markus A. Schmidt.

Abstract:
Inter-modal phase-matched third harmonic generation has been demonstrated in an
exposed-core microstructured optical fiber. Our fiber, with a partially open core having a
diameter of just 1.85 µm, shows efficient multi-peak third-harmonic generation between 500nm and 530 nm, with a maximum visible-wavelength output of 0.96 μW. Mode images and simulations show strong agreement, confirming the phase-matching process and polarization dependence. We anticipate this work will lead to tailorable and tunable visible light sources by exploiting the open access to the optical fiber core, such as depositing thin-film coatings in order to shift the phase matching conditions.

The paper is available online.

Director talks at UniSA’s Future Industries Institute Seminar Series

Mark Hutchinson_1_low_sq25 July 2016:

Professor Mark Hutchinson, CNBP Director, attended UniSA’s Future Industries Institute (FII) Annual Seminar Series and spoke about “Using Light to Measure: Lessons and Examples from Food Innovation to Advanced Systems Biology”.

FII Seminars are aimed at disseminating key discoveries and fundamental advances across all disciplines of the sciences. They are also designed to act as a forum for researchers  to engage, promote cutting edge research and to explore collaborative opportunities.

 

Mike Baratta visits CNBP

Michael_Baratta_web22 July 2016:

Dr Michael Baratta from The University of Colorado Boulder recently visited both the Macquarie and Adelaide nodes of the CNBP during July 2016.

Whilst at both nodes he presented a seminar titled, “Targeting and readout strategies for studying the neural basis of stress resilience,” and spoke with staff and students. This resulted in several potential collaboration projects being discussed in greater detail.

Michael was the successful recipient of the CNBP-American Australian Association (AAA) Fellowship for 2016 and will also be returning to Australia in the next 12 months to continue his CNBP interactions.

Site-Dependent Luminescence and Thermal Stability of Eu2+ Doped Fluorophosphate toward White LEDs for Plant Growth

2016/07/21 : : Bronwyn Gibson : Publication : RedXcross16x9 Title – Site-Dependent Luminescence and Thermal Stability of Eu2+ Doped Fluorophosphate toward White LEDs for Plant Growth.

Authors – Jiayu Chen, Niumiao Zhang, Chongfeng Guo, Fengjuan Pan, Xianju Zhou, Hao Suo, Xiaoqi Zhao and Ewa M Goldys.

Abstract – Eu2+ activated fluorophosphate Ba3GdNa(PO4)3F (BGNPF) with blue and red double-color emitting samples were
prepared via a solid-state method in a reductive atmosphere. Their crystal structure and cationic sites were identified in light of X-ray diffraction pattern Rietveld refinement. Three different Ba2+ sites, coordinated by six O atoms referred to as Ba1, two F and five O atoms as Ba2, and two F and six O atoms as Ba3, were partially substituted by Eu2+. Photoluminescence emission (PL) and excitation (PLE) spectra of phosphor BGNPF:Eu2+ along with the lifetimes were characterized at the liquid helium temperature (LHT), which further confirm the existence of three Eu2+ emitting centers resulting in 436, 480, and 640
nm emission from the 5d→4f transitions of Eu2+ in three different Ba2+ crystallographic sites. These emissions overlap with the absorption spectra of carotenoids and chlorophylls from plants, which could directly promote the photosynthesis. Temperature-dependent PL spectra were used to investigate the thermal stability of phosphor, which indicates that the PL intensity of BGNPF:0.9% Eu2+ with optimal composition at 150°C still keeps 60% of its PL intensity at room temperature, in which blue emission has higher thermal-stability than the red emission. Furthermore, the approaching white LED devices have also been manufactured with a 365 nm n-UV LED chip and present phosphor, which make operators more comfortable than that of the plant growth purple emitting LEDs system composed of blue and red light. Results indicate that this phosphor is an attractive dual-responsive candidate phosphor in the application n-UV light-excited white LEDs for plant growth.

Link – http://pubs.acs.org/doi/pdfplus/10.1021/acsami.6b06102.

In vivo measurements of brain temperature

Stefan_Musolino_sq_web20 July 2016:

CNBP researcher  Stefan Musolino is lead author on a new paper reporting on the development of an optical fiber based probe for in vivo measurements of brain temperature.

Journal: Biomedical Optics Express

Publication title: Portable optical fiber probe for in vivo brain temperature measurements.

Authors: Stefan Musolino, Erik P. Schartner, Georgios Tsiminis, Abdallah Salem, Tanya M. Monro, and Mark R. Hutchinson.

Abstract:
This work reports on the development of an optical fiber based probe for in vivo measurements of brain temperature. By utilizing a thin layer of rare-earth doped tellurite glass on the tip of a conventional silica optical fiber a robust probe, suitable for long-term in vivo measurements of temperature can be fabricated. This probe can be interrogated using a portable optical measurement setup, allowing for measurements to be performed outside of standard optical laboratories.

The paper is accessible online.