Lars Egil Helseth

Professor

1) Electromagnetic fields.

2) Optical sensors and imaging systems.

3) Statistical physics of microstructures.

4) Renewable energy resources.

PHYS102 (spring 2021) and PHYS208 (fall 2021).

Contribute to ENERGI210 (spring 2021) and SDG207 (fall 2021) .

Show author(s) (2021). The self-discharging of supercapacitors interpreted in terms of a distribution of rate constants. Journal of Energy Storage. 102199.
Show author(s) (2021). Harvesting energy from light and water droplets by covering photovoltaic cells with transparent polymers. Applied Energy. 117394.
Show author(s) (2021). Comparison of methods for finding the capacitance of a supercapacitor. Journal of Energy Storage. 102304.

Show author(s) (2020). Superkondensatoren. Fra Fysikkens Verden. 55-58.
Show author(s) (2020). On the accuracy of an interdigital electrostatic position sensor. Journal of Electrostatics. 103480.
Show author(s) (2020). Influence of Salt Concentration on Charge Transfer When a Water Front Moves across a Junction between a Hydrophobic Dielectric and a Metal Electrode. Langmuir. 8002-8008.
Show author(s) (2020). A water droplet-powered sensor based on charge transfer to a flow-through front surface electrode. Nano Energy. 9 pages.

Show author(s) (2019). Triboelectric proximity and contact detection using soft planar spiral electrodes . Smart materials and structures (Print). 9 pages.
Show author(s) (2019). The influence of microscale surface roughness on water-droplet contact electrification. Langmuir. 8268-8275.
Show author(s) (2019). Superhydrofobe overflater. Naturen. 66-69.
Show author(s) (2019). Nanostructures and wetting properties controlled by reactive ion etching of fluorinated ethylene propylene. Colloids and Surfaces A: Physicochemical and Engineering Aspects. 228-238.
Show author(s) (2019). Modelling supercapacitors using a dynamic equivalent circuit with a distribution of relaxation times. Journal of Energy Storage. 1-7.

Show author(s) (2018). Simple fabrication of a multiwall carbon nanotube – elastomer composite with a rough surface and its application in force sensing. Microelectronic Engineering. 106-113.
Show author(s) (2018). Interdigitated electrodes based on liquid metal encapsulated in elastomer as capacitive sensors and triboelectric nanogenerators. Nano Energy. 266-272.
Show author(s) (2018). Flytende metalledninger for bøyelig elektronikk. Fra Fysikkens Verden. 40-41.
Show author(s) (2018). Electrical impedance spectroscopy of multiwall carbon nanotube–PDMS composites under compression. Materials Research Express. 1-11.

Show author(s) (2017). Visualisation of charge dynamics when water droplets move off a hydrophobic surface. European Journal of Physics. 1-8.
Show author(s) (2017). Optical force sensing principle based on transparent elastomer with a rough surface. Sensors and Actuators A-Physical. 667-676.
Show author(s) (2017). How to make a soft, rough surface transparent. Physics Education.
Show author(s) (2017). Evaluation of the energy generation potential of rain cells. Energy. 472-482.

Show author(s) (2016). Triboelectric motion sensor combined with electromagnetic induction energy harvester. Sensors and Actuators A-Physical. 66-72.
Show author(s) (2016). Thomsons dråpegenerator og visualisering av ladningsoverføring. Fra Fysikkens Verden. 84-87.
Show author(s) (2016). Hydrophobic polymer covered by a grating electrode for converting the mechanical energy of water droplets into electrical energy. Smart materials and structures (Print). 12 pages.
Show author(s) (2016). Fluorinated ethylene propylene thin film for water droplet energy harvesting. Renewable Energy. 845-851.
Show author(s) (2016). Electrical energy harvesting from water droplets passing a hydrophobic polymer with a metal film on its back side. Journal of Electrostatics. 64-70.

Academic education and positions:

2008 - : Professor, Department of Physics and Technology, University of Bergen, Norway.

2005 - 2008: Assistant Professor, Divison of Physics and Applied Physics, Nanyang Technological University, Singapore.

2003 - 2005: Postdoc/scientist at the Department of Chemistry and Biochemistry, Florida State University, Tallahassee (USA), 2003-2005.

2002 - 2003: Postdoc/scientist at Max Planck Institute of Colloids and Interfaces, Golm/Potsdam (Germany), 2002 - 2003

2000 - 2002: PhD-studies at the University of Oslo, Norway, obtained a Dr. Scient. degree (physics) in optics/magnetism.

1994 - 1999: Undergraduate studies at the University of Bergen, Norway, obtained a Master of Science (Cand. Sci.) degree in experimental physics.

Documents