Results 11 to 20 of about 179,228 (306)

Rhinogrid™: Precision Instrument in Rhinoplasty. [PDF]

Indian J Otolaryngol Head Neck Surg, 2021
Rhinoplasty is a surgery where the result depends on precision in assessment, shaping and placing grafts. The grafts should be accurately measured with the help of precise measuring instruments. There is a need of instruments which allow precise slicing, measuring and re-sizing of the grafts. Other than depending on multiple instruments for slicing and
Parab SR, Khan MM, Rana AK.
europepmc   +3 more sources

Super-resolution orbital angular momentum holography

Nature Communications, 2023
The resolution of orbital angular momentum holography is limited by a fundamental sampling criterion. Here, the authors break the resolution barrier by temporal multiplexing of binary holograms and enhance the resolution and capacity by several times.
Zijian Shi, Zhensong Wan, Ziyu Zhan, Kaige Liu, Qiang Liu, Xing Fu   +5 more
doaj   +1 more source

A wide-field and high-resolution lensless compound eye microsystem for real-time target motion perception

Microsystems & Nanoengineering, 2022
Optical measurement systems suffer from a fundamental tradeoff between the field of view (FOV), the resolution and the update rate. A compound eye has the advantages of a wide FOV, high update rate and high sensitivity to motion, providing inspiration ...
Li Zhang, Haiyang Zhan, Xinyuan Liu, Fei Xing, Zheng You   +4 more
doaj   +1 more source

Toward a documentary standard for performance testing of terrestrial laser scanners used in forensic practice: A statistical procedure to assess change in instrument precision [PDF]

Journal of Forensic Sciences
Bala Muralikrishnan
exaly   +2 more sources

Highly Tunable Cascaded Metasurfaces for Continuous Two‐Dimensional Beam Steering

Advanced Science, 2023
Cascaded metasurfaces can exhibit powerful dynamic light manipulation by mechanically tuning the far‐field interactions in the layers. However, in most current designs, the metasurfaces are separated by gaps smaller than a wavelength to form a total ...
Lingyun Zhang, Li Zhang, Rongbo Xie, Yibo Ni, Xiaoyu Wu, Yuanmu Yang, Fei Xing, Xiaoguang Zhao, Zheng You   +8 more
doaj   +1 more source

A new method of continuous blood pressure monitoring using multichannel sensing signals on the wrist

Microsystems & Nanoengineering, 2023
Hypertension is a worldwide health problem and a primary risk factor for cardiovascular disease. Continuous monitoring of blood pressure has important clinical value for the early diagnosis and prevention of cardiovascular disease.
Liangqi Wang, Shuo Tian, Rong Zhu
doaj   +1 more source

A wearable motion capture device able to detect dynamic motion of human limbs

Nature Communications, 2020
Current wearable motion capture technologies are unable to accurately detect dynamic motion of human limbs due to drift and instability problems. Here, the authors report a wearable motion capture device combining tri-axis velocity sensor and inertial ...
Shiqiang Liu, Junchang Zhang, Yuzhong Zhang, Rong Zhu   +3 more
doaj   +1 more source

Study of a Microfluidic Chip Integrating Single Cell Trap and 3D Stable Rotation Manipulation

Micromachines, 2016
Single cell manipulation technology has been widely applied in biological fields, such as cell injection/enucleation, cell physiological measurement, and cell imaging.
Liang Huang, Long Tu, Xueyong Zeng, Lu Mi, Xuzhou Li, Wenhui Wang   +5 more
doaj   +1 more source

A motion characteristics modeled angular position sensor by nonlinear transfer of differential capacitance for miniaturized scanning mirrors

Microsystems & Nanoengineering, 2023
In this paper, an angular position sensor (APS) designed for a resonant miniaturized scanning mirror (M-SM) is presented. The APS operates based on the principle of differential variable capacitance, significantly expanding the detectable bandwidth from ...
Songtao Liu, Gaofei Zhang, Lingyun Zhang, Junya Wang, Minghao Gong, Zheng You   +5 more
doaj   +1 more source

All-fiber high-speed image detection enabled by deep learning

Nature Communications, 2022
Here, the authors demonstrate high-speed imaging through multimode optical fibers by using the high intermodal dispersion to transform 2D spatial information into 1D temporal pulsed signal streams.
Zhoutian Liu, Lele Wang, Yuan Meng, Tiantian He, Sifeng He, Yousi Yang, Liuyue Wang, Jiading Tian, Dan Li, Ping Yan, Mali Gong, Qiang Liu, Qirong Xiao   +12 more
doaj   +1 more source