The Centre of Excellence in Nanoscale BioPhotonics (CNBP), a newly established collaborative research program based at the University of Adelaide, will begin its work in earnest later this month with a kick-off meeting in the Australian city.

Announced in December 2013 as one of a dozen new centers backed by the Australian Research Council (ARC) and supported by AUS$23 million from the government agency, CNBP aims to develop novel biophotonics techniques suitable for the study of living cells within biological systems.

"The challenge we want to focus on is understanding the biology of single cells and cellular processes, without the need to take the cells out of the body and rely on traditional microscopy," commented Tanya Monro, director of the university's Institute for Photonics & Advanced Sensing and now director of CNBP.

The center has defined three initial target challenges, formulated so as to tackle some currently challenging questions in cell biology. They include exploring approaches to sensing in and around developing embryos; probing immune signals linked to touch and pain in the central nervous system, in order to investigate the origins of sensation; and exploring the role of the endothelium within blood vessels and the damaging effects of plaque.

These challenges have in turn led to the four themes which currently form the center's research agenda: creating novel light sources for interrogating biomolecules; creating smart surfaces for photonic structures and nanoparticles; creating nanophotonic architectures customized to enhance light-matter interactions at the nanoscale for biological measurement; and identifying specific molecular changes for measurement using advanced molecular sensors.

The themes give an indication of the combination of techniques and novel thinking that the center hopes to foster, an aspect reflected in the Centre's name.

"'Nanoscale' represents the fact that the technology suite we will be developing brings together nanofabrication and nanophotonics, building on the convergence of nanotechnology and photonics," noted Monro. "A lot of current biophotonics technologies are concerned only with imaging modalities, but these nanoscale techniques can go further than that."

A number of recent developments in the field of nanoscale probes give an indication of how these complementary technologies might be fruitfully exploited in areas of interest to CNBP.

One example is the use of carefully manufactured nanocrystals, referred to as upconversion nanoparticles, that can be excited by infra-red irradiation and then emit in a very localized fashion in the visible range.

A recent paper, co-authored by research groups now connected with CNBP, showed how the entry of a single such particle into an advanced nanostructured optical fiber could be detected at the other end of the fiber, potentially allowing nanoscale measurements to be made at a distance. This could in turn provide a means of making some of these measurements within living organisms.

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Centre for Nanoscale BioPhotonics studies cellular-level processes