Fredrik Eklund

Visiting Researcher at Nano and Biophysics

I am a PhD student at Biological Physics with Jan Swenson as supervisor. I received my Masters degree in Chemical Engineering at Chalmers in 1996 and spent many years in different industrial companies before returning to Chalmers in 2016 for research. I study very small (< 1 micrometer) and long-lived gas bubbles in water, known as nanobubbles or ultrafine bubbles. In particular I am interested in how it is possible for ultrafine bubbles to become stable and remain for hours and even days in water. How to differentiate between particles and gas bubbles in solution is another important question. Methods I use to detect bubbles include Nanoparticle Tracking analysis (NTA), Dynamic Light Scattering (DLS) and Digital Holographic Microscopy (DHM). Nano- and microbubbles occur naturally in water in small concentrations and play a crucial role in cavitation and boiling. Artificially generated ultrafine bubbles can find use in ultrasonic imaging, flotation in water treatment and mining industry, aeration of water, disinfection, cleaning, and much more. This is a field of rapidly increasing industrial innovation activity.

Image of Fredrik Eklund

Showing 6 publications


Fast and Accurate Nanoparticle Characterization Using Deep-Learning-Enhanced Off-Axis Holography

Benjamin Midtvedt, Erik Olsén, Fredrik Eklund et al
ACS Nano. Vol. 15 (2), p. 2240-2250
Journal article

Differentiating bulk nanobubbles from nanodroplets and nanoparticles

Fredrik Eklund, Muidh Alheshibri, Jan Swenson
Current Opinion in Colloid and Interface Science. Vol. 53
Review article

Submicron gas bubbles in water

Fredrik Eklund
Doctoral thesis

Size and Refractive Index Determination of Subwavelength Particles and Air Bubbles by Holographic Nanoparticle Tracking Analysis

Daniel Midtvedt, Fredrik Eklund, Erik Olsén et al
Analytical Chemistry. Vol. 92 (2), p. 1908-1915
Journal article

Stable Air Nanobubbles in Water: the Importance of Organic Contaminants

Fredrik Eklund, Jan Swenson
Langmuir. Vol. 34 (37), p. 11003-11009
Journal article

Download publication list

You can download this list to your computer.

Filter and download publication list

As logged in user (Chalmers employee) you find more export functions in MyResearch.

You may also import these directly to Zotero or Mendeley by using a browser plugin. These are found herer:

Zotero Connector
Mendeley Web Importer

There are no projects.
There might be more projects where Fredrik Eklund participates, but you have to be logged in as a Chalmers employee to see them.