917 research outputs found
Comment on "Far-field microscopy with a nanometer-scale resolution based on the in-plane image magnification by surface plasmon polaritons"
This is a small comment concerning the work by Smolyaninov et al. in Phys.
Rev. Lett.94, 057401 (2005)
Pollen Processing Behavior of Heliconius Butterflies: A Derived Grooming Behavior
Pollen feeding behaviors Heliconius and Laparus (Lepidoptera: Nymphalidae) represent a key innovation that has shaped other life history traits of these neotropical butterflies. Although all flower visiting Lepidoptera regularly come in contact with pollen, only Heliconius and Laparus butterflies actively collect pollen with the proboscis and subsequently take up nutrients from the pollen grains. This study focused on the behavior of pollen processing and compared the movement patterns with proboscis grooming behavior in various nymphalid butterflies using video analysis. The proboscis movements of pollen processing behavior consisted of a lengthy series of repeated coiling and uncoiling movements in a loosely coiled proboscis position combined with up and down movements and the release of saliva. The proboscis-grooming behavior was triggered by contamination of the proboscis in both pollen feeding and non-pollen feeding nymphalid butterflies. Proboscis grooming movements included interrupted series of coiling and uncoiling movements, characteristic sideways movements, proboscis lifting, and occasionally full extension of the proboscis. Discharge of saliva was more pronounced in pollen feeding species than in non-pollen feeding butterfly species. We conclude that the pollen processing behavior of Heliconius and Laparus is a modified proboscis grooming behavior that originally served to clean the proboscis after contamination with particles
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Generation of multi-modal dialogue for a net environment
In this paper an architecture and special purpose markup language for simulated affective face-to-face communication is presented. In systems based on this architecture, users will be able to watch embodied conversational agents interact with each other in virtual locations on the internet. The markup language, or Rich Representation Language (RRL), has been designed to provide an integrated representation of speech, gesture, posture and facial animation
How to erase surface plasmon fringes
We report the realization of a dual surface plasmon polariton (SPP)
microscope based on leakage radiation (LR) analysis. The microscope can either
image SPP propagation in the direct space or tin the Fourier space. This
particularity allows in turn manipulation of the LR image for a clear
separation of different interfering SPP contributions present close to optical
nanoelements.Comment: Appl. Phys. Lett. 89, 091117 (2006
SQUID magnetometry combined with in situ cyclic voltammetry: A case study of tunable magnetism of Îł-FeâOâ nanoparticles
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