Zhanhui Sun's research while affiliated with Tsinghua University and other places

Publications (9)

Article
Full-text available
Acoustic emission (AE) monitoring has become an optional technology to quantify slope deformation. However, there are still challenges in developing generic AE interpretation strategies. Dynamics and kinematics models are two physical methods for analysing slope stability, which appear to improve the interpretability of AE monitoring data. The aim...
Conference Paper
Resources and energy are indispensable elements of a modern society and is of sustained interest to resources security management authorities worldwide. The stability of resource supply, demand and price are directly related to every aspect of social life and economic development. In this paper, the design of a risk monitoring and prediction system...
Conference Paper
Full-text available
Rapid emergency resource supply is one of the most issue in effective emergency response and management for crisis and disasters. To support the reasonable emergency resource supply under emergency conditions, emergency material scheduling should take full consideration of time cost, economic cost and the priorities of the resources demand. In this...
Article
In this paper, we report the synthesis and surface-enhanced Raman scattering (SERS) applications of gold nanoshuttles (GNSs). We used the conventional cylindrical gold nanorods (GNRs) with rounded ends as the starting materials, which evolved into the overgrowth, fabricating the GNSs with sharp ends. Compared with the GNRs, the GNSs have much stron...
Conference Paper
Public transport is an indispensable element of a modern society and is of sustained interest to emergency management authorities worldwide. In this paper, the design of an emergency management system for public road transport networks is presented. The system utilizes internet of things (IoT) technologies for monitoring traffics and critical trans...
Article
We report an efficient paper-based surface enhanced Raman scattering (SERS) substrate platform based on a filter paper loaded with Au porous nanospheres (Au PNSs). The Au PNSs with high electric near-field intensity enhancement were synthesized through a seed-mediated growth method. From the transmission electron microscopy (TEM) images, it can be...

Citations

... The previous study (Deng et al., 2019) showed that the amplitude, root-mean-square and average signal level values of the guided wave signals are not closely related to the deformation and velocity during slope instability. At the same time, the ring down count rate is responsive to the evolutionary process of slope instability. ...
... Optimal routing in transportation networks serves an essential role in multiple fields including emergency response and service industry [1]. Travel times on a road network are often stochastic due to unforeseeable incidents such as accidents, congestion, and pedestrian movement patterns [2]. ...
... After processing the gathered data which is converted into GIS-supported formats, users can be informed through their smart mobile devices whether there is an empty parking lot at the parking and if so, the system will display GIS images of empty parking lots and the navigation to them. An emergency management system is proposed in [67] in order to manage public road transport networks that use IoT as a means of observing traffics and road infrastructures. In this research, GIS is also exploited to enhance situational awareness and perform some emergency operations. ...
... Surface enhanced raman scattering (SERS), an extension of Raman spectroscopy, can enhance the Raman signal of analyte by using metal nanoparticles, especially gold nanoparticles (AuNPs) and silver nanoparticles. 21 Upon laser irradiation, the area between two close AuNPs exhibits the particular strong signal enhancement and is defined as 'hotspots.' 18 22 23 24 25 Therefore, development of new sensor to detect salivary biomarkers in liquid environment is very necessary. ...
... [6][7][8][9][10][11] To address both issues, a variety of nanotextured structures, predominantly having a large surface-to-volume ratio and generating dense hot spots (tipped structures, nanostructures with inner porosity, intra-gap structures or selfassembly superstructures, etc.) were fabricated and tested as versatile SERS substrates. [12][13][14][15][16][17][18][19][20][21][22][23] Specifically, porous materials, nanostructures, and nanoparticles, routinely reaching uniform SERS enhancement sufficient to overcome the single-molecule detection limit independently of excitation/ detection conditions, are of growing interest. [24][25][26] Several papers reported the fabrication of such sponge-like structures, using dealloying of the two-component template via its dissolving in a corrosive environment. ...