Our Team


Pieter Desmet
Desmet introduced cognitive emotion theory to the domain of design research, and is board member of the International Design and Emotion Society. Desmet was recently awarded a five year personal grant for research that aims to understand the nuances of positive emotions in human-product interactions.
Anna_Pohlmeyer Anna Pohlmeyer
Anna Pohlmeyer’s background is in psychology (Humboldt University Berlin). Furthermore, she completed her PhD research in engineering design at TU Berlin and the University of Luxembourg. Her thesis focused on early phases of product development in the design of human-technology interaction. Prior to her doctoral studies, she worked at MIT AgeLab on ideas and technologies that can improve quality of life across the lifespan. As assistant professor at TU Delft, she investigates theoretical and empirical aspects of design-mediated well-being.

Doctoral candidates

Steven Fokkinga
Fokkinga introduced the possibility of involving negative emotion in product interaction, thus unlocking a whole new range of potentially enjoyable product experiences for designers. Fokkinga was recently granted a four year PhD-fund to explore and formalize these insights into an approach that will lead to richer, more meaningful product-user experiences.
yoon Jay Yoon
Jay Yoon is a PhD candidate at Industrial Design Engineering of TU Delft. He has a background in industrial design and computer science. His research focuses on emotion-driven design, mainly concerning how understanding nuances of positive emotions can contribute to a design process. He has been developing design tools and techniques aiming to assist designers to be aware of differentiated aspects between distinct positive emotion types. He is currently working on identifying the opportunities to work with the awareness of nuances of positive emotions.
Personal webpage
Deger Ozkaramanli
Deeply inspired by people’s contradictions, I aim to develop new ways with which designers can tackle potential conflicts between virtuous and tempting goals. In this way, design can inform, seduce, or persuade people to choose a course of action that balances choices between virtues and temptations, contributing to their wellbeing
Mafalda Casais
Mafalda has a background in illustration, graphic design and industrial design (MSc). Her PhD research at TU Delft focuses on the symbolic value of household products, its influence on personal values, behaviour and self-expression and its contribution to subjective well-being of the user.
Wan Jou She (Lavender)
Young, passionate, humorous, lovely and empathic.That’s all you should know about this researcher. Wan Jou, who’d prefer to be called Lavender, has a deep interest in human relationships and subjective well-being. With the graphic design and English literature background, Lavender’s PhD research deals with various types of relationship loss such as separation, death and breakup. In this study she explores design directions that can nudge and facilitate individuals’ loss coping processes and provide a meaningful and constructive ways of coping with loss.
Profile picture DIOPD website (cropped ID studiolab) Boudewijn Boon
Doctoral candidate at the TU Delft, Faculty of Industrial Design Engineering
Boudewijn is interested in how design can play a role in shaping the ways people live their lives. During his master thesis (MSc Industrial Ecology) and his work as a research assistant for Pieter Desmet, this interest was reflected in his research on how design can facilitate ‘the good life within ecological means’. As a PhD candidate he is currently exploring how design can engage children with cancer in physical play and thereby stimulate their physical development.


Juan Carlos Ortiz Nicolás
Doctoral candidate at the Imperial College London
PhD student researching user experience in the Department of Mechanical Engineering at Imperial College London. He is interested in understanding how consumers experience positive encounters with products. Juan Carlos was granted a three-year PhD-fund to explore and develop tools based on an emotion and user experience innovation approach.
Hans Ruitenberg
Interaction Designer at ICEMOBILE
Hans has worked on the domain of positive emotion and well-being from a design perspective. In his thesis ‘Design for Subjective Well-Being’, he developed designs to answer the question: ‘Can strategies for subjective well-being be translated into or supported by tangible designs that inspire and persuade people to adopt these strategies into their daily lives?’ Together with the DIOPD he has set up a pilot project for Tinytask; the product-service that resulted from his thesis.
Maria Sääksjärvi
Associate Professor at the TU Delft, Faculty of Industrial Design Engineering
Maria Sääksjärvi is Associate Professor at the Department of Product Innovation Management at Delft University of Technology, The Netherlands. She holds a Ph.D. in Marketing. Prior to her academic career, she worked at Accenture as a management consultant. Her research interests lie in the areas of innovations, emotional well-being, and high technology. She has published 18 journal articles in journals such as Journal of the Academy of Marketing Science, Psychology & Marketing, Journal of Interactive Marketing, PLOS One, among others.
Simon Jimenez Simon Jimenez
Simon completed the master’s programme ‘Integrated Product Design’ at the faculty of Industrial Design Engineering at the TU Delft. During his studies, he became especially interested in human behaviour and user-centered design theories and methodologies. In his graduation project, ‘Positive Design in Office Environments’, he demonstrated how design methodology of experience and positive design can be applied in an office setting to stimulate small moments of happiness. In collaboration with Anna Pohlmeyer and Pieter Desmet, he currently co-edits the ‘Positive Design Reference Guide’.
Ilaria Scarpellini
Ilaria recently graduated at IDE in Integrated Product Design & Design for Interaction. Since 2011 she has been actively involved with the DIOPD. She collaborated to the research “Positive emotions in human-product interactions” and “Measuring product meaning”. She also developed the “Emotion Rainbow”, to support designers that are willing to include positive emotional aspects in their projects. During her graduation project, she investigated the implications of the Reversal Theory in the design process and developed the sensitizing tool “Carousel of Feelings”. At the moment she is research and education assistant for the DIOPD.


Santiago Santiago De Francisco
Santiago studied Industrial Design at Universidad de los Andes in Bogotá, Colombia. After a couple of years working as a concept and product designer, he decided to start the Design for Interaction (DfI) master program at TU Delft. During his working experience he became interested in the importance of people’s behaviors and how those behaviors could be translated into objects, products and services with powerful meanings. Currently he has started a research project about the act of saving, using a piggy bank product as a starting point. This research aims to understand the importance of saving as an experience and its relation to happiness. As part of his graduation project plan, Santiago wants to take this knowledge about the act of saving and implement it in a larger scale.
our team-Iris ploum Iris Ploum
Iris did her bachelor programme at IDE in Delft and continued with the master Design for Interaction. Starting with this master, she became interested in how design can contribute to people’s happiness. She has always been fascinated by how people think and behave, especially in a social context. In 2012 she participated with four other Design for Interaction students, from TU Delft, to the Microsoft Design Expo. The team designed a social elevator, called Lift Life. Currently Iris is graduating on the topic Gratitude. She is collaborating with Creatuals, a company that designs creative rituals and supervised by Anna Pohlmeyer and Pieter Desmet. With a new coffee / tea ritual, Iris aims to make people more aware of the good things in their lives, to become more grateful and happy.
our-team-lotte Lotte Jacobse
Master student ‘Design for Interaction’
After completing her bachelor degree in Delft, Lotte really found her interest as a designer within the master ‘Design for Interaction’. Using design to initiate meaningful user-product and user-user interactions that result in new and valuable experiences, is where products can make an actual difference. For her graduation she is working together with Spuni and DIOPD. The project challenge is to create a product that contributes to the happiness of early parents and their infants, by initiating a meaningful experience.
ourteam-Jens Jens Claus
Jens completed his Bachelor degree at IDE and continued with the Master Design for Interaction where he became very interested in the role possessions can have in people’s lives. The courses Design for Emotion & Subjective Well-Being and Design for Happiness sparked his interest on how people can find deeper meaning in user-product interaction. His passion gradually shifted from designing towards research. After a research internship at a user experience consultancy, he started his research thesis on Experience Enablers.
ourtem-Maik Maik de Rooij
Maik is currently graduating from his master’s degree ‘Design for Interaction’ at the faculty of Industrial Design Engineering in Delft. During his bachelor at the same faculty, he became interested in how design can have a positive impact on the lives of people. As a designer, Maik loves to dive into a new context to explore design opportunities. His graduation project is about designing a product that supports psychiatric adolescents in coping with a psychological crisis. He is working together with Karakter, an institution for child and adolescent psychiatry in several places in the Netherlands.

Honorary members

jaya_cumar Jaya Kumar
Jaya Kumar is former president of PepsiCo’s global nutrition group. He is currently senior vice-president for strategy in Asia of Mondelez International (an American multinational confectionery, food and beverage conglomerate), heading the Southeast Asia division.
Eapen George Eapen George
Eapen George is the former V.P. R&D for Innovation at PepsiCo. Eapen is passionate about creating brands and products in the pursuit of positive emotions. He understands that with the right story, we can create powerful sensory signatures for core brands. With his new company, Round Feather, he is currently setting up a global network of like-minded people to undertake projects around the world that apply the principles of positive design.
Beatrijs Voorneman
Beatrijs Voorneman works on the domain of positive emotions and well being from a design perspective. In her Master thesis ‘Improving the welfare of pigs’ she discovered a new field within this domain: design for animal welfare. In 2011 and 2012, Beatrijs was project manager of the DIOPD.