2 research outputs found
A Design Kit for Mobile Device-Based Interaction Techniques
Beside designing the graphical interface of mobile applications, mobile phones and their built-in sensors enable various possibilities to engage with digital content in a physical, device-based manner that move beyond the screen content. So-called mobile device-based interactions are characterized by device movements and positions as well as user actions in real space. So far, there is only little guidance available for novice designers and developers to ideate and design new solutions for specic individual or collaborative use cases. Hence, the potential for designing mobile-based interactions is seldom fully exploited. To address this issue, we propose a design kit for mobile device-based interaction techniques following a morphological approach. Overall, the kit comprises seven dimensions with several elements that can be easily combined with each other to form an interaction technique by selecting at least one entry of each dimension. The design kit can be used to support designers in exploring novel mobile interaction techniques to specic interaction problems in the ideation phase of the design process but also in the analysis of existing device-based interaction solutions
Ultrahigh ionic exclusion through carbon nanomembranes
The collective âsingleâfileâ motion of water molecules through natural and artificial nanoconduits inspires the development of highâperformance membranes for water separation. However, a material that contains a large number of pores combining rapid water flow with superior ion rejection is still highly desirable. Here, a 1.2 nm thick carbon nanomembrane (CNM) made from crossâlinking of terphenylthiol (TPT) selfâassembled monolayers is reported to possess these properties. Utilizing their extremely high pore density of 1 subânm channel nmâ2, TPT CNMs let water molecules rapidly pass, while the translocation of ions, including protons, is efficiently hindered. Their membrane resistance reaches â104 Ω cm2 in 1 m Clâ solutions, comparable to lipid bilayers of a cell membrane. Consequently, a single CNM channel yields an â108 higher resistance than pores in lipid membrane channels and carbon nanotubes. The ultrahigh ionic exclusion by CNMs is likely dominated by a steric hindrance mechanism, coupled with electrostatic repulsion and entrance effects. The operation of TPT CNM membrane composites in forward osmosis is also demonstrated. These observations highlight the potential of utilizing CNMs for water purification and opens up a simple avenue to creating 2D membranes through molecular selfâassembly for highly selective and fast separations