Tianfeng Zhou

Mr. Tianfeng Zhou

Mechanical Engineering, Beijing Institute of Technology, Beijing, China

Research Focus & Metrics

Academic Career Length

13Years (2014-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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19 July 2021 in International Journal of Extreme Manufacturing
Verified
Journal Article
Open access
PDF file
TZTianfeng Zhou
Tianfeng Zhou
YHYupeng He
Yupeng He
TWTianxing Wang
Tianxing Wang
Zhanchen ZhuZhanchen Zhu
Zhanchen Zhu
RXRuzhen Xu
Ruzhen Xu
XWXibin Wang
Xibin Wang
Micro/nanostructured components play an important role in micro-optics and optical engineering, tribology and surface engineering, and biological and biomedical engineering, among other fields. Precision glass molding technology is the most efficient method of manufacturing micro/nanostructured glass components, the premise of which is meld manufacturing with complementary micro/nanostructures. Numerous mold manufacturing methods have been developed to fabricate extremely small and high-quality micro/nanostructures to satisfy the demands of functional micro/nanostructured glass components for various applications. Moreover, the service performance of the mold should also be carefully considered. This paper reviews a variety of technologies for manufacturing micro/nanostructured molds. The authors begin with an introduction of the extreme requirements of mold materials. The following section provides a detailed survey of the existing micro/nanostructured mold manufacturing techniques and their corresponding mold materials, including nonmechanical and mechanical methods. This paper concludes with a detailed discussion of the authors recent research on nickel-phosphorus (Ni-P) mold manufacturing and its service performance.

29 May 2018 in Micromachines
Verified
Journal Article
Open access
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TWTao Wang
Tao Wang
JZJing Zhou
Jing Zhou
TZTianfeng Zhou
Tianfeng Zhou
LSLu Song
Lu Song
Compared with polymer-based biochips, such as polydimethylsiloxane (PDMS), glass based chips have drawn much attention due to their high transparency, chemical stability, and good biocompatibility. This paper investigated the glass molding process (GMP) for fabricating microstructures of microfluidic chips. The glass material was D-ZK3. Firstly, a mold with protrusion microstructure was prepared and used to fabricate grooves to evaluate the GMP performance in terms of roughness and height. Next, the molds for fabricating three typical microfluidic chips, for example, diffusion mixer chip, flow focusing chip, and cell counting chip, were prepared and used to mold microfluidic chips. The analysis of mold wear was then conducted by the comparison of mold morphology, before and after the GMP, which indicated that the mold was suitable for GMP. Finally, in order to verify the performance of the molded chips by the GMP, a mixed microfluidic chip was chosen to conduct an actual liquid filling experiment. The study indicated that the fabricating microstructure of glass microfluidic chip could be finished in 12 min with good surface quality, thus, providing a promising method for achieving mass production of glass microfluidic chips in the future.

2 July 2018 in Micromachines
Verified
Journal Article
Open access
PDF file
TZTianfeng Zhou
Tianfeng Zhou
Zhanchen ZhuZhanchen Zhu
Zhanchen Zhu
XLXiaohua Liu
Xiaohua Liu
Zhiqiang LiangZhiqiang Liang
Zhiqiang Liang
XWXibin Wang
Xibin Wang
Chalcogenide glass (ChG) is increasingly demanded in infrared optical systems owing to its excellent infrared optical properties. ChG infrared optics including ChG aspherical and freeform optics are mainly fabricated using the single point diamond turning (SPDT) technique, which is characterized by high cost and low efficiency. This paper presents an overview of the ChG infrared optics fabrication technique through precision glass molding (PGM). It introduces the thermo-mechanical properties of ChG and models the elastic-viscoplasticity constitutive of ChG. The forming accuracy and surface defects of the formed ChG are discussed, and the countermeasures to improve the optics quality are also reviewed. Moreover, the latest advancements in ChG precision molding are detailed, including the aspherical lens molding process, the ChG freeform optics molding process, and some new improvements in PGM.

16 January 2022 in Micromachines
Verified
Journal Article
Open access
PDF file
JWJiang wei
Jiang wei
WZWenxiang Zhao
Wenxiang Zhao
TZTianfeng Zhou
Tianfeng Zhou
LWLiang Wang
Liang Wang
TQTianyang Qiu
Tianyang Qiu
Percutaneous coronary intervention (PCI) with stent implantation is one of the most effective treatments for cardiovascular diseases (CVDs). However, there are still many complications after stent implantation. As a medical device with a complex structure and small size, the manufacture and post-processing technology greatly impact the mechanical and medical performances of stents. In this paper, the development history, material, manufacturing method, and post-processing technology of vascular stents are introduced. In particular, this paper focuses on the existing manufacturing technology and post-processing technology of vascular stents and the impact of these technologies on stent performance is described and discussed. Moreover, the future development of vascular stent manufacturing technology will be prospected and proposed.

1 July 2014 in Materials Science and Engineering: A
Verified
Journal Article
Closed access
LMLiping Ma
Liping Ma
WZWenxiang Zhao
Wenxiang Zhao
ZLZhiqiang Liang
Zhiqiang Liang
XWXibin Wang
Xibin Wang
LXLijing Xie
Lijing Xie
TZTianfeng Zhou
Tianfeng Zhou

26 February 2018 in Micromachines
Verified
Journal Article
Open access
PDF file
PGPeng Gao
Peng Gao
Zhiqiang LiangZhiqiang Liang
Zhiqiang Liang
XWXibin Wang
Xibin Wang
TZTianfeng Zhou
Tianfeng Zhou
JXJiaqing Xie
Jiaqing Xie
WSWenhua Shen
Wenhua Shen
Hot embossing is an efficient technique for manufacturing high-quality micro-lens arrays. The machining quality is significant for hot embossing the micro-lens array mold. This study investigates the effects of micro ball end-milling on the machining quality of AISI H13 tool steel used in the micro-lens array mold. The micro ball end-milling experiments were performed under different machining strategies, and the surface roughness and scallop height of the machined micro-lens array mold are measured. The experimental results showed that a three-dimensional (3D) offset spiral strategy could achieve a higher machining quality in comparison with other strategies assessed in this study. Moreover, the 3D offset spiral strategy is more appropriate for machining the micro-lens array mold. With an increase of the cutting speed and feed rate, the surface roughness of the micro-lens array mold slightly increases, while a small step-over can greatly reduce the surface roughness. In addition, a hot embossing experiment was undertaken, and the obtained results indicated higher-quality production of the micro-lens array mold by the 3D offset spiral strategy.