Published Research

Our methods are validated in peer-reviewed journals. The science behind the instruments.

Sunscreen sensory attribute prediction via textural, rheological and tribological tests — journal paper header
Sensory2026
International Journal of Cosmetic Science -- Vol. 48, Issue 1, pp. 97-109

Sunscreen sensory attribute prediction via textural, rheological and tribological tests

This study aims to find the quick ways to predict sensorial attributes of sunscreens using instrumental measurements. We specifically focus on the attributes most relevant to consumer ‘liking’ and the easiest measurements to implement in industrial labs for product development. Of the latter, we consider three types of measurements: emulative ‘textural’ tests typically performed with a texture analyser as well as rheological and tribological measurements.

Günel Nabiyeva, Baran Teoman, Andrei Potanin, Gennady Y. Gor
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Flow of a two-dimensional liquid foam: Impact of surfactant type and boundary conditions — journal paper header
Foam2025
Journal of Non-Newtonian Fluid Mechanics -- Vol. 339-340, Article 105417

Flow of a two-dimensional liquid foam: Impact of surfactant type and boundary conditions

In this study, we experimentally investigate the rheological and flow behavior of two-dimensional (2D) monodisperse aqueous foams, sheared between parallel plates using a custom-made rheo-optical apparatus with smooth and roughened walls. The foams were prepared using two commercially available detergents — Foam 1 and Foam 2 — while maintaining similar bubble sizes and liquid fractions.

Farshad Nazari, Andrei Potanin, Hadi Mohammadigoushki
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Psychophysical and Rheological Investigation of Toothpaste Tube Squeezability: A People-Centric Approach — journal paper header
Sensory2024
Journal of Texture Studies -- Vol. 55, Issue 6

Psychophysical and Rheological Investigation of Toothpaste Tube Squeezability: A People-Centric Approach

In this work, toothpaste tube squeezability was tested by three different methods: assessment by a human panel, a tactile glove, and several purely instrumental tests. The panelists characterized squeezability in terms of the acceptability of the product. The tactile glove was utilized to determine the maximum grip forces ( G F ) applied by the same panelists during their assessment.

Baran Teoman, Mark Vandeven, Jonathan Esposito, Cajetan Dogo-Isonagie, Andrei Potanin
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Effect of Orifice Shape and Dip Tube Clearance on the Discharge Hydrodynamics and Residual Heel Volume in a Dispensing Bottle — journal paper header
Dispensing & Discharge2023
Fluids -- Vol. 8, Issue 7, Article 190

Effect of Orifice Shape and Dip Tube Clearance on the Discharge Hydrodynamics and Residual Heel Volume in a Dispensing Bottle

In this work, the roles of the orifice shape and off-bottom clearance of the dip tube on the discharge flow rate of a complex fluid from a dispensing bottle and on the resulting residual “heel” volume left in the bottle were investigated. Particle Image Velocimetry (PIV) was used to monitor the discharge rate and the heel. The dip tube clearance and the orifice shape both affected the formation of the heel.

Baran Teoman, Andrei Potanin, Piero M. Armenante
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“Gloppiness” Phenomena and a Computer Vision Method to Quantify It — journal paper header
Dispensing & Discharge2023
Gels -- Vol. 9, Issue 7, Article 532

“Gloppiness” Phenomena and a Computer Vision Method to Quantify It

In this study, we present a rapid, cost-effective Python-driven computer vision approach to quantify the prevalent “gloppiness” phenomenon observed in complex fluids and gels. We discovered that rheology measurements obtained from commercial shear rheometers do show some hints, but do not exhibit a strong correlation with the extent of “gloppiness”.

Shijian Wu, Mark Mintel, Baran Teoman, Stephanie Jensen, Andrei Potanin
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The discharge of complex fluids through an orifice: A review — journal paper header
Dispensing & Discharge2022
Chemical Engineering Research and Design -- Vol. 179, pp. 346-364

The discharge of complex fluids through an orifice: A review

The discharge of fluids with complex rheological properties from industrial tanks, pipes, dispensers, or packaging containers through an orifice is a complex process often encountered in industry, which, if not properly characterized, can result in slow discharge and significant residual fluid left in the container. The discharge is strongly affected by the orifice geometry and fluid rheology.

Baran Teoman, Andrei Potanin, Piero M. Armenante
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Prediction of Tactile Sensory Attributes of Facial Moisturizers by Rheology and Tribology — journal paper header
Sensory2021
Biotribology -- Vol. 28, Article 100201

Prediction of Tactile Sensory Attributes of Facial Moisturizers by Rheology and Tribology

Twenty-three commercial samples of facial moisturizers were tested using rheological and tribological mea surements and further compared to sensorial attributes as rated by descriptive panels. The correlation between panel ratings and mechanical properties of these products were studied and reported herein.

Jonghun Lee, Joey Lu, Andrei Potanin, Christine Boyke
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Two step yielding in soft materials — journal paper header
Rheology2020
Advances in Colloid and Interface Science -- Vol. 282, Article 102179

Two step yielding in soft materials

A review is presented on the topic of two-step yielding observed in complex fluids that cover a broad variety of materials ranging from colloidal gels, attractive glasses, emulsions, suspensions, and several commercial pastelike materials. The common features in various systems displaying two-step yielding behavior are the presence of two characteristic forces between the inter

Amit Ahuja, Andrei Potanin, Yogesh M. Joshi
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Rheological measurements for prediction of pumping and squeezing pressures of toothpaste — journal paper header
Rheology2018
Journal of Non-Newtonian Fluid Mechanics -- Vol. 258, pp. 1-9

Rheological measurements for prediction of pumping and squeezing pressures of toothpaste

Methods of non-Newtonian fluid mechanics are applied to predict processability and use of toothpaste, specifically its pumpability through long pipes and squeezability from tubes. The goal is to define procedures which would allow estimating pumping pressure and squeezing force from the data obtained on conventional rotational rheometers which are critical for product development and quality control.

Amit Ahuja, Giannina Luisi, Andrei Potanin
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Thixotropy and rheopexy of aggregated dispersions with wetting polymer — journal paper header
Rheology2004
Journal of Rheology -- Vol. 48, Issue 6, pp. 1279-1293

Thixotropy and rheopexy of aggregated dispersions with wetting polymer

Different types of thixotropy of aggregated dispersions of magnetic metal, nonmagnetic iron oxide and carbon black particles in organic solvents with a polymer containing pendant wetting groups are studied. Thixotropic behavior depends on the type of aggregation which determines the type of structural recovery in and after shear. Metal particles form denser aggregates combined into flocs or networks recoverable in or after shear, which results in positive

Andrei Potanin
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Our instruments produce time-series friction and spreadability curves, sample metadata, and a clear path from measurement to sensory correlation -- the kind of output a technical buyer expects to evaluate.

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