PhD Position on ‘Particle Sizing of Agro-Food Products from Scattering Properties
University of Leuven, Division of Mechatronics, Biostatistics and Sensors (MeBioS)




The MeBioS group performs groundbreaking research on innovative sensor technologies and the associated data analysis methods to understand and control the quality of products and ongoing processes. The research on sensors mainly focusses on optical sensor systems (spectroscopy, hyperspectral imaging, thermography, smart cameras,…). While the data research involves the optimal design of experiments, chemometrics, process monitoring and control, as well as artificial intelligence and deep learning.



Particle sizeis highly important for the quality of a great diversity of products, both from a producer’s and a consumer’s point of view. In food products, the particle size distribution determines quality parameters like viscosity and creaminess, while the mouthfeel, the flavor and the further processing are affected as well. The importance of this parameter demands a correct and objective measurement method. Measurement techniques using laser light diffraction, dynamic light scattering and even ultrasound extinction are already commercially available. However, these techniques are often very expensive and adequate particle sizing typically requires that the samples are diluted.

In this research project, particle size distributions will be extracted from scattering properties obtained through non-destructive optical measurement techniques, like diffuse spectroscopy in the Vis-NIR range. The scattering properties typically provide information on the present particles and their shape/size. Recently, it has been shown that iterative inversion of microscale light propagation models based on Mie theory allows to estimate the parameters of a particle size distribution from measured scattering coefficient spectra. However, a monomodal distribution of spherical scatterers in independent scattering regime was assumed. For many agro-food products, these assumptions don’t always hold. Therefore, this research project will focus on a more general estimation of particle size distributions from scattering information, including adaptations for non-spherical particles, multimodal distributions and the effects of dependent scattering.


To perform this research, the MeBioS Biophotonics group is looking for a highly motivated PhD candidate. Do you hold a master in (bioscience)engineering, materials science or physics? Do you have a creative, critical, analytical and innovative mindset? Do you have excellent oral and written communication skills in English? Then you may be the perfect candidate to join our team.  Experience with modelling techniques or optical measurement techniques is a plus.


  • We offer a full-time PhD position for 1 year. After positive evaluation, the contract can be extended to 4 years.  
  • Excellent guidance by our young, dynamic and multidisciplinary team
  • State of the art research infrastructure.
  • A challenging job in a young, dynamic environment.
  • High level scientific training at a top-ranked university.
  • Being part of a world-class research group.
  • Remuneration according to the KU Leuven salary scales (


For more information please contact Mr. Robbe Van Beers, tel.: +32 16 37 71 32, mail: or Prof. dr. ir. Wouter Saeys, tel.: +32 16 32 85 27, mail:

You can apply for this job no later than October 06, 2019 via the online application tool

KU Leuven seeks to foster an environment where all talents can flourish, regardless of gender, age, cultural background, nationality or impairments. If you have any questions relating to accessibility or support, please contact us at

If you apply for this position please say you saw it on Engineeroxy


All Jobs


Harvard University Academic Positions

Kuwait University Current Faculty Openings

Osaka University Academic Opportunities

Purdue University Job Postings for Faculty Positions

Texas Tech University Faculty Openings

Tsinghua University Job Postings

University of Cambridge Job Openings

University of Geneva Faculty Opportunities

University of New South Wales Job Openings

University of Nottingham Research Positions

University of Oslo Academic Jobs

University of Saskatchewan Faculty Positions

University of Southampton Research Vacancies

University of Tokyo Current Academic Vacancies

University of Toronto Open Faculty Positions

University of Zurich Job Postings