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This study applies Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data and the Mixture Tuned Matched Filtering (MTMF) algorithm to map the sub-pixel distribution of alteration minerals associated with the Masahim volcano, SE Iran for understanding the spatial relationship between alteration minerals and volcano facies. Investigations of the alteration mineralogy were conducted...
A multi degree-of-freedom system using live skeletal muscles as actuators is presented. Millimeter-scale, optically excitable 3D skeletal muscle strips are created by culturing genetically coded precursory muscle cells that are activated with light: optogenetics. These muscle bio-actuators are networked together to create a distributed actuator system. Unlike traditional mechanical systems where fixed...
Optogenetics is an emerging new technology for controlling live cell function with light. Skeletal muscles are genetically coded to express light-sensitive proteins so that the cell's behavior may be altered by illuminating a targeted portion of the cell. Optogenetic control provides a non-invasive, wireless, and fast control method with high spatiotemporal resolution. This paper presents the technology,...
Functional muscle tissue holds promise as a practical actuator for use in engineering applications. Previously, functional live-cell muscle actuators used for robotics have not scaled greater than about 10 µm, the size of a single monolayer of cells. We present a method to produce larger scale muscle actuators fully integrated into a mechanical structure. We use manufacturing techniques including...
Novel designs of an array of piezoelectric stack actuators using a unique buckling mechanism are presented in this paper. Multiple PZT actuator units with high gain displacement amplification mechanisms are arranged in parallel with spatial phase differences. Having an inherent kinematic singularity, the buckling mechanism provides not only an extremely high gain of displacement amplification, but...
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