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Controlling interneuron activity in Caenorhabditis elegans to evoke chemotactic behavior
Optogenetics and new optical tools are used to manipulate neural activity directly in freely moving animals to evoke chemotactic behaviour and it is discovered that controlling the dynamics of activity in just one interneuron pair (AIY) was sufficient to force the animal to locate, turn towards and track virtual light gradients.
Prism coupling technique investigation of elasto-optical properties of thin polymer films
The use of thin polymer films in optical planar integrated optical circuits is rapidly increasing. Much interest, therefore, has been devoted to characterizing the optical and mechanical properties
Stress effects in prism coupling measurements of thin polymer films
Due to the increasingly important role of some polymers in optical waveguide technologies, precise measurement of their optical properties has become important. Typically, prism coupling to slab
Slowing down surface plasmons on a moiré surface.
The sinusoidally modified amplitude about the node suppresses the radiation losses and reveals a relatively high quality factor (Q=103), which is used to understand the coupling behavior.
Dynamics of pattern formation and emergence of swarming in C. elegans
This study uses a model organism, Caenorhabditis elegans, to study the direct relation between oxygen sensing, pattern formation, and the emergence of swarming in active worm aggregates and finds that when thousands of animals gather on food, bacteria-mediated decrease in oxygen levels slowed down the animals and triggers motility-induced phase separation.
Grating based plasmonic band gap cavities.
It is shown that for biharmonic band gap cavities, the radiation loss can be suppressed by removing the additional grating component in the cavity region and effective index perturbation and cavity geometries are obtained by additional dielectric loading.
Tunable surface plasmon resonance on an elastomeric substrate.
It's been demonstrated that the Raman signal can be maximized by applying an external mechanical strain to the elastomeric grating and hence are found to control the resonance condition of surface plasmon polaritons.
Plasmonic band gap structures for surface-enhanced Raman scattering.
It was shown that reproducible Raman scattering enhancement factors of over 10 can be achieved by fabricating biharmonic SERS templates using soft nano-imprint technique and that the SERS activities from these templates are tunable as a function of plasmonic resonance conditions.
Chemical and topographical modification of PHBV surface to promote osteoblast alignment and confinement.
Results of this study proved that microtopographies on PHBV can improve osseointegration when combined with chemical cues, and that microgrooves and cell adhesive protein lines on PHbV can guide selective osteoblast adhesion and alignment.
Plasmonic band gap cavities on biharmonic gratings
In this paper, we have experimentally demonstrated the formation of plasmonic band gap cavities in infrared and visible wavelength range. The cavity structure is based on a biharmonic metallic