Abstract Since the discovery of graphene, two-dimensional (2D) materials have been widely applied to field-effect transistors due their great potential in optoelectronics, photodetectors, intelligent sensors, and neuromorphic devices. By integrating a 2D transistor with triboelectric nanogenerator (TENG) into tribotronic transistor, induced can readily regulate charge carrier transport characte...

Ultrasound (US) imaging is recommended for early detection of developmental dysplasia of the hip (DDH), which includes a spectrum of hip joint abnormalities in infants. However, the currently standard 2-dimensional (2D) US-based approach to measuring the dysplasia metric (DM), namely the α angle, suffers from high within-hip variability with standard deviations typically ranging between 3◦ − 7◦...

The Doppler effect has well-established applications in astronomy, medicine, radar and metrology. Recently, a number of experimental demonstrations of the inverse Doppler effect have begun to appear. However, the inverse Doppler effect has never been observed on an electronically reconfigurable system with an external electromagnetic wave source at radio frequencies (RF) in experiment. Here we ...

OBJECTIVES The purpose of this study was to assess the clinical feasibility of three-dimensional (3D) reconstruction of color Doppler signals in patients with mitral regurgitation. BACKGROUND Two-dimensional (2D) color Doppler has limited value in visualizing and quantifying asymmetric mitral regurgitation. Clinical studies on 3D reconstruction of Doppler signals in original color coding have...