15 December 2015:
CNBP researchers A/Prof Heike Ebendorff-Heidepriem and Dr Herbert Foo feature in this latest paper published in Optical Materials Express – ‘Drawing tubular fibres: experiments versus mathematical modelling.’
A series of six experiments drawing tubular fibres are compared to some recent mathematical modelling of this fabrication process. The importance of fibre tension in determining the internal geometry of the fibre is demonstrated, confirming a key prediction of the models. There is evidence of self-pressurisation of the internal channel, where an additional pressure is induced in the internal channel as the fibre is drawn, and the dependence of the magnitude of this pressure on fibre tension is discussed. Additionally, there is evidence that the difference between the glass and furnace temperatures is proportional to the furnace temperature and dependent on the preform geometry.
Further paper information is available online.
22 July 2015:
Dr Herbert Foo, CNBP Technical Officer, visited the Otto Schott Institute of Materials Research (OSIM), the Institute for Physical Chemistry (IPC) at Friedrich Schiller University (FSU) Jena and the Institute of Photonic Technology (IPHT) in Jena, Germany for six weeks from the 17th June to 22 July, 2015.
At OSIM he performed glass fabrication and characterisation experiments together with members in Prof Lothar Wondraczek’s group, which is an internationally renowned group for glass science research. Herbert also performed initial experiments using Tip Enhanced Raman Scattering (TERS) Raman spectrometry analysis for amino silane functionalised glass slides at Prof Volker Deckert’s group at IPC and IPHT. This group is famous for their expertise in TERS Raman spectroscopy imaging with 10 nanometers spatial resolution. Initial experiments were performed collaboratively by Herbert and Dr Zhenglong Zhang. The results were promising which suggests this technique is feasible for surface analysis for thin film. Herbert also performed a presentation, introducing CNBP to Deckert’s group meeting on the 2nd July 2015.
On the 13th July, 2015, Herbert joined Dr Georgios Tsiminis and Dr Erik Schartner from the Adelaide node of the CNBP in a day visit to IPHT.
A productive series of visits, Herbert had a lot of fruitful scientific discussions with members in FSU Jena and IPHT. He also gained a lot of hands-on experience in advanced glass fabrication and characterisation techniques as well as with surface analysis techniques using TERS Raman spectroscopy. More collaboration in these research areas are expected in the future.
18 May 2015:
Dr Herbert Foo, CNBP Technical Officer maximized his opportunities during a recent visit to Melbourne, undertaking a number of stakeholder discussions and presentations.
First up was a visit and presentation to Trajan Scientific and Medical, where the direction of future collaboration projects on the surface functionalisation of glass slides was discussed.
This was followed by a visit to the CNBP RMIT node to discuss additional future collaboration projects, as well as to visit the RMIT node laboratories.
Finally, Herbert visited the Centre for Materials and Surface Science (CMSS) at La Trobe University to explore the possibility of using their surface analysis instruments for CNBP projects.