The Greater Copenhagen Nanoscience Seminar
This seminar series is organized by the three nanoscience hubs located in the Copenhagen-Lund area. The aim is to to increase awareness about our mutual capabilities and to inspire collaborations.
Within a radius of just 25 km, the Copenhagen-Lund region features three strong hubs for nanoscience, with complementary strengths, scientific focus and capabilities:
- the Nano-Science Center at the University of Copenhagen
- NanoLund at Lund University
- a cluster of groups at the Technical University of Denmark
Each hub comprises more than 30 research groups from several disciplines and several hundred staff, has developed advanced facilities for synthesis, characterization and fabrication of nanostructures, has a strong track record in translating discoveries into new technologies, and each is heavily engaged in education at all levels.
Our joint vision is to discover, invent and develop nanosystems with functionalities that emerge from the designed interaction between highly controlled and tunable building blocks.
By combining highly controlled building blocks from very different material systems to realize advanced, functional systems, we aim to jointly address challenges that are out of reach for an individual center.
The aim of this seminar series is to increase awareness about our mutual capabilities and to inspire collaborations.
Scheduled talks: once a month on a Friday at 15:15
19th March 2021: Anders Mikkelsen (NanoLund): Inspired by insects: Nanoscale systems that sense, think and act
Nanostructures hold great promise as sensitive and selective sensors for applications throughout society. However, detecting a signal is not enough, it must also be processed and acted upon – preferably locally and energy efficiently without communicating with a distant central computer. Combining a variety of nanostructures into artificial neural networks could accomplish this. But we need well-defined circuit architectures and concepts, with limited size and clear functionality, as a starting point to explore any nanotechnology solution. Interestingly, current insect neurobiology has identified such circuits.
Insects are capable of amazing autonomous feats well beyond current computers, such as navigating across hundreds of kilometres of unfamiliar terrain, using a brain the size of a grain of rice, with only a few drops of nectar as energy supply. One module of the insect brain conserved across species with vastly different lifestyles is the central complex navigation circuit. This has been distilled to its fundamental neuroarchitecture and the function of a number of its components into a biologically constrained computational model .
We used this model to explore the potential of neuromorphic nanophotonic computing, which has recently gained much interest . We propose a new concept for creating efficient and fast neural networks where physical interconnects are replaced by light and nanostructured components keeps footprint and energy consumption minimal . Simulations of central parts of the network, indicate feasibility and promise performance orders of magnitude beyond present hardware solutions .
From a promising start, we want to expand efforts to design artificial neural networks inspired by neurobiology combined with all of our skills in fabrication and characterization of nanostructures.
Figure: Artificial neural network in which the weighted connectivity between nodes is achieved by emitting and receiving overlapping light signals in a quasi 2D waveguide. Reception, evaluation, and emission of the optical signals are performed by neuron-like nodes constructed from III–V Nanowire optoelectronics .
 “An anatomically constrained model for path integration in the bee brain”, T. Stone, B. Webb, A. Adden, N. B. Weddig, A. Honkanen, R. Templin, W. Wcislo, L. Scimeca, E. Warrant, S. Heinze, Current Biology 27 (2017), 3069
 ”Photonics for artificial intelligence and neuromorphic computing“, Shastri, B.J., Tait, A.N., Ferreira de Lima, T. et al. Nat. Photonics 15, (2021) 102
 “Implementing an Insect Brain Computational Circuit Using III–V Nanowire Components in a Single Shared Waveguide Optical Network”, DO Winge, S Limpert, H Linke, MT Borgström, B Webb, S Heinze, A. Mikkelsen, ACS Photon. 7 (2020) 2787
Short Bio: Anders Mikkelsen, Professor, Lund University and Director of NanoLund
Anders Mikkelsen received his PhD degree in Physics from Århus University in 2001. He then moved to Lund and is now Professor at Department of Physics and director of the Swedish Strategic Research Area NanoLund. Anders studies the interplay between function, structure, and growth of nanostructures, from micrometers down to the atomic scale, from seconds to attosecond and moving towards realistic synthesis and device operation environments. The aim is a better fundamental understanding of complex, dynamic condensed matter systems, as well as developing novel materials and devices for next generation computing, energy systems and products improving our lives.
In order to achieve effective cross-fertilization, we will test a seminar format of two parts, where the first consists of 30 min lecture and 15 min questions and the second a 30 min “collaboration-space” where you are invited to stay on in Zoom for discussing ideas and possible collaborations. The total time for the event is between 75 and 90 minutes, depending on the topic and the arrangement with the speaker.
The Zoom link will be e-mail to all members of the three research environments. in case you are interested and have not received the link, please contact: Gerda [dot] Rentschler [at] ftf [dot] lth [dot] se
19th February 2021: Bo Wegge Laursen, (KU): Super bright fluorescent molecular materials – concepts, challenges and prospective
Bo Wegge Laursen's talk abstract and short bio
22 January 2021: Winnie Svendsen, (DTU): Nanostructures and surfaces for enhanced bio-analysis
Winnie Svendsen's talk abstract and short bio
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