2,497 research outputs found
MOOCs as a Hub in Political Science. How online courses can reinforce strategies of academic associations
No full textShape Retrieval of Azopolymer Surface Relief Gratings from Diffraction Efficiency Measurement
No full textAzopolymers have enormous potential as real-time materials for lithography. Light-induced surface deformations in these polymers enable single-step surface patterning, offering the possibility of fabricating reconfigurable diffractive optical components like gratings. While real-time measurement of the surface geometry is inherently possible, previous methods have relied on complex instruments. Conversely, simple approaches based on real-time diffraction efficiency measurements of a probing light beam have provided only qualitative estimates of the inscription process. Here, we propose a diffraction-based method for the accurate real-time reconstruction of surface relief gratings inscribed on azopolymer films. Our method relies on the acquisition of the diffraction pattern of a probe beam during the SRG formation, and we allowed for surface geometry reconstruction through Fourier decomposition with residual error below 3% and 50 ms temporal resolution. Our all-optical approach, directly integrable in any experimental configuration, provides direct access to the SRG inscription process, enabling real-time feedback for on-demand dynamic surfaces
The role of oxytocin in plasticity, memory and attachment dynamics.
No full textThe peptide hormones oxytocin (OT) and arginine vasopressin (AVP) have been implicated in the regulation of mammalian social behavior. There is considerable evidence implicating both oxytocin and vasopressin in social recognition and social memory. This review explores their role in attachment dynamics. Oxytocin is one element in a complex network of interactions observed in natural phenomena ranging from molecular biology, etology, social behavior and human psychology
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