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Virtual and augmented reality (VR and AR), often combined under the term 'extended reality (XR)', are increasingly losing their niche status and entering the mass market. Think of the metaverse, gaming, applications in industry and innovative areas of telemedicine. But most augmented reality applications have one thing in common: they tend to focus primarily or exclusively on the visual sense. 'The sense of touch is usually left out of the equation, even though it plays a very crucial role in how we experience the world,' explained Professor Jürgen Steimle, who heads the Saarland University research group on human-computer interaction at the Saarland Informatics Campus. According to Steimle, integrating tactile feedback into virtual worlds would help to make the user experience far more immersive.
(...) One result of this work is the project 'Tacttoo', a portmanteau word that combines the words 'tactile' and 'tattoo' and neatly describes what has been developed in the project: a super-thin electronic foil only 35 micrometres (= thousandths of a millimetre) thick that can be applied to the skin like a temporary tattoo and that can stimulate the sense of touch electrically without the need for any moving parts. And because the foil is feel-through thin, objects can still be perceived and felt as before. This opens up a whole new range of potential applications. Like a number of other methods, Tacttoo can be used to create a completely new haptic experience for purely digital objects (albeit one that is much more realistic thanks to the higher resolution possible), but it can also be used to enhance interaction with real objects by including other sensory impressions. (...) In the ERC-funded project 'Feel-XR: Feel-through Haptic Feedback for Augmented and Virtual Reality', Steimle and his team are focusing on technology transfer aspects and will be identifying new areas of application as well as refining existing ones. 'Through a combination of market analyses, application development and collaboration with industrial partners, we want to explore the commercial potential of this technology in order to see Tacttoos being used in practice,' said Steimle. The European Union has established Proof of Concept Grants specifically for this purpose. These grants are only awarded to scientists who have already received a higher level of EU funding from which they have developed basic technologies with high commercial and social innovation potential. The funding volume is €150,000 over 18 months. (...) Full story here
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