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Two new fields are introduced to MEMS/NEMS: a nanogenerator that harvests mechanical energy for powering nanosystems, and strained induced piezotronics for smart MEMS. Fundamentally, due to the polarization of ions in a crystal that has non-central symmetry, such as ZnO, GaN and InN, a piezoelectric potential (piezopotential) is created in the crystal by applying a stress. The principle of harvesting...
Summary form only given. Developing wireless nanodevices and nanosystems is of critical importance for sensing, medical science, environmental/infrastructure monitoring, defense technology and even personal electronics. It is highly desirable for wireless devices to be self-powered without using battery. This is a new initiative in today's energy research for mico/nano-systems in searching for sustainable...
Developing wireless nanodevices and nanosystems are of critical importance for sensing, medical science, defense technology and even personal electronics. Power sources are indispensable for independent, sustainable, maintain-free and continuous operations of implantable biosensors, ultrasensitive chemical and biomolecular sensors, nanorobotics, micro-electromechanical systems, remote and mobile environmental...
A nanoscale semiconducting ZnO based biosensor with integrated microfluidics is designed, fabricated and tested to demonstrate the detection of streptavidin, a commonly used protein. Amperometric (I-t) measurement is utilized to detect the change of conductivity over time. By comparing with the control experiment, the specific binding event between biotin and streptavidin is detected. The data indicates...
Developing novel technologies for wireless nanodevices and nanosystems is of critical importance for in-situ, realtime and implantable biosensing, biomedical monitoring and biodetection. It is highly desired for wireless devices and even required for implanted biomedical devices to be self-powered without the use of a battery. Therefore, it is essential to explore innovative nanotechnologies for converting...
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