12 februari 2025
Docentföreläsning i Materialvetenskap (Materials Science - på engelska)
Föreläsare: PhD Nara Kim
Tid: 10:15-11:00
Lokal: K1, Kåkenhus, Campus Norrköping
Titel: Exploring the Structure-Property Relationship in PEDOT:PSS for Enhanced Electrical and Mechanical Properties
Abstract (finns endast på engelska): Conducting polymers (CPs), polymers that can conduct electrical current like metals, are one of the most significant scientific discoveries in 20th century as it was recognized with the 2000 Nobel Prize in Chemistry. In addition to the mechanical and processing advantages of polymers, CPs possess intriguing features over inorganic conductors: i) thin film of doped CPs is almost transparent in the visible region, making it suitable as a transparent electrode in optoelectronic devices and touchscreens; ii) a strong coupling between ionic and electronic charge carriers in CPs enables the electrochemical modulation of color and conductivity, which is the operation principle of electrochemical displays/windows and electrochemical transistors/switches, respectively; iii) the coupling between ion exchange and charge accumulation at the CP-electrolyte interfaces also enables their applications in various bioelectronic devices and electrochemical energy storage devices; and iv) owing to low thermal conductivity and bipolaron band structure, CPs are considered as promising thermoelectric materials. In all applications of CPs, electrical conductivity is a critical factor that defines the device performances, while mechanical deformability recently becomes important for the expansion of their applications toward wearables and implantable devices. In this lecture, I will share my research journey focused on enhancing the electrical and mechanical properties of the widely studied CP, PEDOT:PSS. By exploring the structure-property relationship, I aim to highlight how these improvements have led to the development of highly conductive and stretchable PEDOT:PSS. I will also discuss its application in various transparent, flexible, and stretchable electronic devices, including solar cells, light-emitting devices, neural electrodes, organic electrochemical transistors, thermoelectric devices, and batteries.
15 januari 2025
Docentföreläsning i Tillämpad fysik
Ämne: Understanding the electrochemistry of conjugated polymers to boost the development of their applications
Föreläsare: Jose Martinez Gil, universitetslektor på IFM
Tid: Onsdag 15 januari kl. 15:15-16:00
Lokal: Jordan/Fermi, Fysikhuset, Campus Valla
Abstract:
Understanding the basic principles of any kind of materials is key to develop working and reliable devices by using such materials. Most of the devices nowadays are constructed using materials which composition is constant while working, that is, they do not change their composition during their function. That is also the case of conjugated (or conducting) polymers. There, applications such as flexible and softer electronics, or solar energy conversion emerge and are being already in use nowadays. However, they also can change their composition reversibly through electrochemical reactions. Such changes in the composition originate changes in their properties (such as volume, colour, porosity, surface properties,…) that can be adjusted on demand, giving the possibility to develop devices based on these changes. This results in a paradigm change where materials without a constant composition are used in devices, posing new challenges and many unknowns for their use in applications for the real-life, outside research labs. Thus, even though the fundamental working principles have been stablished, it is still needed to understand all their behaviours in full, which will be very helpful for the development of present and new applications. Examples of applications and how the basic working principles affect their development will be presented, ending with the discussion of future possibilities.
19 december 2024
Docentföreläsning i Medicinteknisk vetenskap
Ämne: Emulation and biofabrication of human tissues and disease models
Föreläsare: Pierfrancesco Pagella, universitetslektor på IFM
Tid: Torsdag 19 december kl. 10:15-11:00
Lokal: Nobel/BL32, B-huset, Campus Valla
Abstract:
A central goal of bioengineering is the generation of in vitro emulation systems of human organs. These systems, spanning from spheroids to organoids to organ-on-chip systems, are increasingly being used to recreate human- and patient-specific features and conditions, to develop innovative approaches for regenerative medicine, and to complement or substitute animal models in drug development and fundamental biomedical research. Yet, most of these models are overly simplistic and far from their “real” counterparts. Indeed, the emulation of organs and their functions requires the combination of several complex elements, such as organ-specific cellular complexity, realistic extracellular matrix, perfusable vasculature, innervation, immune cells, and in vivo-like 3D topography, just to name a few. Despite the impressive advances, no approach so far could deliver in one solution a bioengineered organ that contains all the fundamental functional units of a real organ. To truly push the boundaries of this field, the integration of all the fundamental components of human organs within these models emerges as a critical scientific challenge that must be addressed. This task requires the integration of multiple research fields and approaches, from developmental and stem cell biology to genomics, tissue engineering, and materials science.
In my docent lecture, after an accessible introduction to the field, I will discuss the approaches and challenges in the generation of complex human bioengineered organs, with a particular emphasis on oral tissues and disease models, guided by examples taken from my research path. I will further discuss current and future approaches that we are pursuing to tackle this fundamental challenge.
6 december 2024
Docentföreläsning i Materialvetenskap
Ämne: Functionalized Point Defects in Semiconductors: Building a Quantum Computer
Föreläsare: Yuttapoom Puttisong, universitetslektor på IFM
Tid: Fredag 6 december kl. 13:15-14:00
Lokal: Jordan-Fermi, Fysikhuset, Campus Valla
Abstract (Finns bara på engelska):
In this docent lecture, I will talk about the useful aspects of point defects and magnetic impurities in semiconductors. I will go through our current understanding of defect centers in semiconductors, their significance in semiconductor technology, and how we can detect and identify them with electron spin resonant spectroscopy. Then, I will introduce you to the exciting aspects of "defect-by-design" and show how we could construct quantum bits (or qubits, analogous to the classical bits in our computers) using spin-active defect centers. Finally, I will discuss our current research on next-generation spin qubits in halide perovskites and show the exciting new prospects that we aim to contribute to the field of quantum computation.
3 december 2024
Docentföreläsning i Design
Föreläsare: Johan Blomkvist
Tid: 10:30-11:15
Lokal: Alan Turing, E-huset, Campus Valla
Title: Service phantasms: virtual and artificial versions of future service
Abstract:
In my docent lecture I will talk about prototyping in service design. Service design is an interdisciplinary approach to creating and improving services by focusing on user experience and customer needs. By integrating various disciplines such as design, psychology, and systems thinking, service design seeks to develop holistic and user-centered solutions. To understand the practices of service design, with specific emphasis on prototyping, I have been utilizing theories and methods from distributed cognition which argues that cognitive processes are not confined to the individual but are spread across the environment, tools, and other people. Prototypes range from simple artefacts to systems and flows of interaction, and I will show how the format of prototypes and prototyping influences both who can be included, but also whether they are able to contribute in a meaningful way in the shaping of future services. I also discuss developments in the field, conceptualisations of service as a material and introduce the concept of service phantasms as a way of understanding future services.
25 november 2024
Docentföreläsning i Materialvetenskap
Ämne: Robots and Artificial Intelligence – Paths Towards New Functional Materials
Föreläsare: Jesper Jacobsson, universitetslektor, IFM
Tid: Måndag 25 november kl. 13:15-14:00
Lokal: SH63, Studenthuset, Campus Valla
Abstract (Finns bara på engelska):
In this docent lecture, I will give an introduction for how generative artificial intelligence could be used to discover new functional materials. The lecture will also touch upon how we can use robots augmented with machine learning to accelerate the following exploration and development of the materials identified by using generative models.
7 oktober 2024
Docentföreläsning i Visualisering och medieteknik
Ämne: Learning to sample signals: theory, algorithms, and applications
Föreläsare: Ehsan Miandji
Tid: 13:15-14:00
Lokal: K1, Kåkenhus, Campus Norrköping
Sampling is the process of converting a real-world object, i.e. an analogue signal, into a digital object, to be stored and processed by a computer. As such, sampling and reconstruction of signals is at the heart of virtually any field in science and technology.
30 september 2024
Teknisk mekanik
Tid: Måndag 30 september kl. 13:15-14:00
Lokal: A35, A-huset, Campus Valla
Abstract
Varför ska man kopiera de som är bäst inom sin idrottsgren? När man väl har lärt sig deras teknik så har de antagligen redan gått vidare. Vore det inte bättre att öka sin förståelse så att man kan ligga i framkant, istället för i svallvågorna? Med biomekaniska simuleringar som ett komplement till traditionella experimentella metoder finns möjligheten att få veta varför prestationen ökar, inte bara hur man ska göra för att öka sin prestation.
Idrott handlar inte bara om prestation. Idrott handlar även om hälsa. Det kanske är extra viktigt för atleter med funktionsnedsättning? Hur ska en sit-ski se ut för att förbättra prestationen, men samtidigt vara så skonsam som möjligt mot kroppen?
Alla personer är såklart inte atleter. Med biomekaniska simuleringar finns potential för att förbättra patienters livskvalitet. Medicinska implantat kan vara en stor hjälp för att kunna utföra vanliga dagliga aktiviteter såsom gång i trappor och att kunna ställa sig upp ifrån en stol.
I denna föreläsning kommer jag att visa grunderna i flerkroppsmekanik samt hur och varför vi behöver inkludera muskler i modellerna för att öka förståelsen om kroppens mekanik. Jag visar teorin bakom muskeloskelettära simuleringsmodeller som är baserade på Newton-Eulers rörelseekvationer, inversdynamik och statisk optimering. Denna metod tillåter helkroppsmodeller med hundratals muskler och stelkroppssegment av de flesta kroppsdelarna. Några tillämpningar inom idrott, hälsa och medicin presenteras.
