Haptics: Science, Technology, Applications

This open access book constitutes the proceedings of the 13th International Conference on Human Haptic Sensing and Touch Enabled Computer Applications, EuroHaptics 2022, held in Hamburg, Germany, in May 2022. The 36 regular papers included in this book were carefully reviewed and selected from 129 submissions. They were organized in topical sections as follows: haptic science; haptic technology; and haptic applications

Liquid Crystal Optics for Applications

In this Special Issue, you will find new directions in the research on liquid crystal applications. To be honest, we were surprised to find 10 papers covering a variety of application areas, with no overlap between them. The only important application without a related article was “display”! This was exactly the situation we hoped for. In this Special Issue, you can find 10 articles discussing the applications of LC devices or LC materials. The applications are liquid crystal on silicon (LCOS) for optical communication, laser processing and wireless optical charging, wavelength selective filters, waveguides, smart windows, LCDs for terahertz waves, LC polymers for polarizing grating and LC material for an ink.We believe that this Special Issue will help researchers focusng on optical devices or LC materials to obtain inspiration for new devices using liquid crystals

Multiphysics Modeling And Simulation Process To Develop Thin Piezoelectric Film Sensors To Measure The Vibration Of Structures With Complex Shapes And Boundary Conditions.

Piezoelectricity was discovered in 1880 by Jacques and Pierre Curie. Its application has since been extended to actuators and sensors, widely used in industry, automotive, and aerospace applications. The last two decades have seen intensive research in piezoelectric theory in an effort to effectively capture and control the distinctive coupling of electricity and elasticity. However, due to the complexity of the theory involved, finite element and numerical methods are often used in the process. Limited analytical exact solutions are also found in literature. The objective of this work is to devise a multiphysics modeling and simulation process to develop thin piezoelectric film sensors to measure the vibration of structures with complex shapes and boundary conditions. First, the output charge of generic piezoelectric films, respectively attached to a beam and a plate, is modeled using ANSYS and experimentally verified. Second, the modeling method is extended to a cylindrical shell followed by experimental verifications. Appropriate material properties obtained from past researches were incorporated as required. Finally, shaped sensors for the measurement of specific dynamic characteristics of a beam, plate and cylindrical shell respectively, are developed and experimentally validated. The results show that Multiphysics modeling can be an efficient design tool and be effectively used to simulate complex systems. This tool can be also used to detect or simulate design flaws and errors