世博娱乐

个人简介 

Organic Photonics and Nanooptics group, Laboratory of Organic Electronics,

Linköping University, Sweden

www.mpjonsson.com

[email protected]

Magnus Jonsson is a professor of applied physics at the Laboratory of Organic Electronics at Linköping University in Sweden. His research group studies novel nanooptical concepts for applications such as displays, energy systems, and smart materials. As example, the group recently introduced conducting polymers as a new materials platform for dynamic plasmonics. Other interests include forest-based materials for radiative cooling and dynamic camouflage. Prof. Jonsson joined Linköping University as assistant professor in 2014, was appointed associate professor in 2016 and full professor in 2021. He is a Wallenberg Academy Fellow since 2019 and holds consolidator grants from the European Research Council and the Swedish Research Council. He is the co-director of the strategic initiative on Advanced Functional Materials at Linköping University and member of the editorial advisory board of ACS Applied Optical Materials. In 2019-2020 he was the chair of the Young Academy of Sweden.

报告摘要

Conducting polymers offer unique ways to control light and heat, which I will illustrate using recent examples from our research. I will first demonstrate that conducting polymers enable a new type of dynamically tuneable optical nanoantennas.1-5 Such nanoantennas form the basis for important applications like optical metasurfaces, but they are traditionally static. By contrast, the optical response of conducting polymer nanoantennas can be dynamically tuned by varying the oxidation state of the polymer, opening for redox-tunable metasurfaces and applications like dynamically tunable flat lenses and video holograms.

Next, I will show how the same type of electroactive polymers enables novel means for dynamic structural coloration for reflective displays.6-7 Such displays form an energy-efficient complement to emissive displays and provide additional benefits such as being suitable for use in bright light.

Finally, I will present some of our work on radiative cooling by which the coldness of outer space enables passive cooling of objects on Earth via thermal radiation. I will focus on the use of conducting polymers to electrically tune the radiative cooling power, offering temperature regulation of objects by tuning their ability to radiate heat.8-9 The concept is based on modulating the infrared emissivity of our devices, which also offer means for adaptable camouflage and anticounterfeiting.10

1. Conductive polymer nanoantennas for dynamic organic plasmonics. S. Chen et al. Nature Nanotechnology 2020, 15, 35-40.

2. Electrical Tuning of Plasmonic Conducting Polymer Nanoantennas. A. Karki et al. Advanced Materials 2022, 34, 13, 2107172

3. Doped Semiconducting Polymer Nanoantennas for Tunable Organic Plasmonics. A. Karki et al. Communications Materials 2022, 2022, 3, 48

4. Dynamic Conducting Polymer Plasmonics and Metasurfaces. S. Chen and M. P. Jonsson. ACS Photonics 2023, 10, 3, 571–581

5. Tuneable anisotropic plasmonics with shape-symmetric conducting polymer nanoantennas Y. Duan, et al. Advanced Materials 2023, 35, 51, 2303949.

6. Dynamically tuneable reflective structural colouration with electroactive conducting polymer nanocavities. S. Rossi et al. Advanced Materials 2021, 33, 40, 2105004

7. Tunable structural color images by UV-patterned conducting polymer nanofilms on metal surfaces. S. Chen et al. Advanced Materials 2021, 33, 33, 2102451

8. Cellulose-based Radiative Cooling and Solar Heating Powers Ionic Thermoelectrics M. Liao, et al. Advanced Science 2023, 10, 2206510

9. Electrical Tuning of Radiative Cooling at Ambient Conditions D. Banerjee et al. Cell Reports Physical Science 2023, 4, 101274

10. Electrically tunable infrared optics enabled by flexible ion-permeable conducting polymer-cellulose paper

C. Kuang et al. npj Flexible Electronics 2024