High-speed cameras explore more details than normal cameras in the time sequence, while the conventional video sampling suffers from the trade-off between temporal and spatial resolutions due to the sensor’s physical limitation. Compressive sensing overcomes this obstacle by combining the sampling and compression procedures together. A single-pixel-based real-time video acquisition is proposed to record dynamic scenes, and a fast nonconvex algorithm for the nonconvex sorted ℓ1 regularization is applied to reconstruct frame differences using few numbers of measurements. Then, an edge-detection-based denoising method is employed to reduce the error in the frame difference image. The experimental results show that the proposed algorithm together with the single-pixel imaging system makes compressive video cameras available.
Mechanical instabilities and piezoresistivity of individual rolled-up SiGe/Si microtubes are investigated using
nanorobotic manipulation. By applying this technique, as-fabricated one-end-fixed SiGe/Si microtubes can be cut and
picked up from the substrate to examine their mechanical and electromechanical properties in a free space. Individual
SiGe/Si microtubes show typical Euler buckling when the uniaxial compressive load is larger than a critical value.
Moreover, experiments show that 1.6-turn rolled-up SiGe/Si microtubes have similar mechanical stability to ideal
seamless tubes though the former ones have a spiral-like cross sectional area instead of an ideal ring. According to the
measured I-V properties, SiGe/Si microtubes show positive piezoresistivity under compressive loads.
Proceedings Volume Editor (1)
This will count as one of your downloads.
You will have access to both the presentation and article (if available).
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.