Browsing by Author "Xu, B."

FEM-based analysis on sensing out-of-plane displacements of low-order Lamb wave modes by CMUTs

Lu, W.; Zhang, S.; Wang, R.; Yang, Y.; Zhang, G.; Zhang, W.; Xu, B.; Yılmaz, Mehmet (AIP Publishing LLC, 2022-11-23)

It is well known that acoustic emission (AE) signals, generated by external impacts or damages such as crack initiation, mainly propagate in the form of Lamb waves in plate-like structures. In this work, MEMS-based resonant ...

High efficiency 1.9 Kw single diode laser bar epitaxially stacked with a tunnel junction

Zhao, Y.; Wang, Z.; Demir, Abdullah; Yang, G.; Ma, S.; Xu, B.; Sun, C.; Li, B.; Qiu, B. (IEEE, 2021-04-21)

We report on the development of a 940-nm diode laser bar based on epitaxially stacked active regions by employing a tunnel junction structure. The tunnel junction and the device parameters were systematically optimized to ...

Shortest unique substring query revisited

Ileri, Atalay Mert; Külekci, M.O.; Xu, B. (Springer, Cham, 2014)

We revisit the problem of finding shortest unique substring (SUS) proposed recently by Pei et al. (ICDE'13). We propose an optimal O(n) time and space algorithm that can find an SUS for every location of a string of size ...

Theoretical and simulation studies on designing a phase-reversal-based broadband CMUT with flat passband and improved noise rejections for SHM

Lu, W.; Zhang, S.; Wang, R.; Xu, B.; Yılmaz, Mehmet; Zhang, W. (Institute of Electrical and Electronics Engineers, 2022-11-15)

In the past two decades, capacitive micromachined ultrasonic transducers (CMUTs) have been greatly explored for applications in structural health monitoring (SHM); however, relevant theories about their broadband sense ...