WWSC webinar series on

Transport properties

Welcome to join a seminar series on transport properties arranged by Wallenberg Wood Science Center!

Transport properties affect our daily lives, and understanding them helps us understand the possibilities and challenges they bring. Starting in fall 2023, this series aims to educate on the topic, with presentations by experts in WWSC followed by discussions.

The meetings are held in Zoom and are open for everyone to attend.

Program Spring 2024

Webinar 5:
May 30, 14:00 – 16:00 CET

Mobility and diffusion in crowded fibrillar systems
Prof. Daniel Söderberg, KTH

Webinar 4:
February 15, 14:00 – 16:00 CET

Ion transport in electrolytes and membranes
Dr. Viktor Gueskine, LiU

Previous webinars

Webinar 1:
October 13, 14:00 – 16:00 CET

Electric transport
Prof. Igor Zozoulenko, LiU
  1. Main definitions and concepts: mobility, conductivity; atomic bonding, band theory of solids, density of states (DOS)
  2. Thermoelectrics
  3. Types of electric transport:
    1. Band transport
    2. hopping transport
    3. quantum transport
  4. Hopping transport in conducting polymers
    1. Electronic properties and charge carriers in conducting polymers
    2. Morphology of conducting polymers
    3. Two case studies:

Monte-Carlo calculations of the temperature dependence of the conductivity

Multi-scale mobility calculations

Webinar 2:
December 12, 10:00 – 12:00 CET

Controlled release

Webinar 2:
January 11, 10:00 – 12:00 CET

Small molecule diffusion and barriers

Transport properties are affecting our daily life; electrons are moving to give us light and water is travelling up the plant to replace the transpired water. Membrane technologies, based on selective diffusion and/or solubility, makes it possible to clean the air from volatile organic compounds. Sponges are used in the kitchen to clean the desk from liquids. Controlled release makes it possible to administer medicals over a certain time period etc.

Transport is also creating problems/challenges; air is leaving the tires, leading to that we have to fill up again, the risk for voltage breakdown limits the voltage that can be used in electric power transmission, capillary-driven water transport leads to mold growth in buildings, hygroscopic polymers (including cellulose-based materials) have different mechanical properties in summer and winter. Thermal transport necessitates thick insulations in houses, the combined issues with moisture and oxygen often necessitates complex and expensive multilayer solutions for food and medical packaging.

With this in mind, we here initiate a seminar series on transport properties. The purpose is to educate ourselves on the topic. We believe that a broad knowledge on this is a good tool for the work in WWSC and can also lead to new collaborations within WWSC.

For questions contact the organizer Prof. Mikael Hedenqvist