Results 221 to 230 of about 165,150,859 (278)

Piecewise Acoustic Source Imaging with Unknown Speed of Sound Using a Level-Set Method. [PDF]

Commun Appl Math Comput
Huang G, Qian J, Yang Y.
europepmc   +1 more source

A Compact and Fast Single‐Spike TTFS Encoder With Ultralow Operating Voltage for Efficient Neuromorphic Fourier Transform

Advanced Science, EarlyView.
A Pt/TaOx/V single‐spike TTFS encoder achieves ultralow‐voltage (∼0.35 V), high‐speed (∼100 ns) operation with simplified circuitry. Integrating bipolar nonuniform temporal encoding with a spiking‐DFT neuron model enables a neuromorphic FFT framework. Device‐calibrated simulations demonstrate high spectral fidelity across multitone, speech, and chirp ...
Yang Wu, Qi Wei, Junfeng Zhang, Lirou Su, Ning Mao, Beibei Huang, Jiaying Chen, Dian Huang, Shengzhong Feng, Yishu Zhang, Shuai Zhong   +10 more
wiley   +1 more source

Hybrid Spring‐Coupled Broadband Energy Harvester Integrated with CuSCN Functionalized Triboelectric Vibration Sensor for Self‐Sustainable Vehicular IoTs

Advanced Science, EarlyView.
A self‐sustainable vehicular vibration and indoor environment monitoring IoT platform is developed which integrates a hybrid spring‐coupled broadband energy harvester with a machine learning‐assisted PAN‐CuSCN nanofiber triboelectric vibration sensor for subtle‐to‐wide‐range vibration detection and road/speed classification.
Trilochan Bhatta, Gagan Bahadur Pradhan, Shital Sharma, MoonSeong Jo, Aklesh Teli, Hochan Chang, Jae Yeong Park   +6 more
wiley   +1 more source

Investigation of a method to estimate the average speed of sound using phase variances of element signals for ultrasound compound imaging. [PDF]

J Med Ultrason (2001)
Nagaoka R, Omura M, Hasegawa H.
europepmc   +1 more source

Developing a Novel Method for Estimating the Speed of Sound in Biodiesel Known as Grey Wolf Optimizer Support Vector Machine Algorithm.

Biomed Res Int, 2021
Lv Z, Hu M, Yang Y, Makhdoumi J.
europepmc   +1 more source

Habitat‐Specific Design Strategies for Untethered Soft Robots

Advanced Science, EarlyView.
Habitat shapes the design of untethered soft robots. Across land, water, air, and living tissues, environmental constraints govern viable combinations of compliant structures, actuation mechanisms, and energy delivery. This review connects these constraints with robotic performance and identifies design principles for advancing adaptable, durable, and ...
Siyang Li, Zhikun Miao, Tuck‐Whye Wong, Tiefeng Li   +3 more
wiley   +1 more source

Pseudo‐Haptic Feedback: Multi‐Modal Approaches to Stiffness Perception and User Experience

Advanced Science, EarlyView.
Can visual deformation substitute for physical haptic feedback? In immersive VR, deformation‐based pseudo‐haptics enables stiffness discrimination comparable to wearable force feedback, while their combination yields the highest performance and presence without increasing workload.
Mehmet Ege Cansev, Xiaodong Sun, Gionata Salvietti, Domenico Prattichizzo, Philipp Beckerle   +4 more
wiley   +1 more source

Estimation error in speed of sound caused by rotation of measured cross-section from short-axis plane of blood vessels: a preliminary study. [PDF]

J Med Ultrason (2001)
Mori S, Onoda K, Arakawa M, Kanai H.
europepmc   +1 more source

Mechanism of Direct Acoustic Construction and Gradient Properties Tuning

Advanced Science, EarlyView.
Directed acoustic construction enables omnidirectional gradient tuning of fingerprint‐inspired microstructures. By investigating the DAC mechanisms, diamond particles are found to enhance acoustic physical, mechanical, and chemical effects, promoting acoustic curing and broadening the range of gradient property tuning.
Dandan Wu, Lijuan Zheng, Guang Yao, Zijun Liu, Liyan Luo, Cile Liang, Chengyong Wang   +6 more
wiley   +1 more source

Interfacial Polarization Dynamics of Nitrile Dipoles in Organic Synaptic Transistors for Acoustic Reservoir Computing

Advanced Science, EarlyView.
Interfacial nitrile dipoles unlock tunable memory in organic synaptic transistors through competing polarization and relaxation. Their finite time dynamics are directly harnessed for acoustic reservoir computing, delivering 97.17% spoken digit recognition, reliable speech emotion and snoring recognition, and an ultralow event energy of only 50 aJ ...
Yutian Liu, Jiale Huang, Haoran Fang, Jichen Zhao, Fan Ye, Bo Huang, Ruibin Liang, Jintao Xu, Fanqi Wang, Mingjun Huang, Zhiming Lin, Shuguang Zhang, Linfeng Lan, Junbiao Peng   +13 more
wiley   +1 more source