Siyi Cheng

Graduate Student

Education

Ph.D. Exchange Research Program with Huazhong University of Science and Technology
M.S. Control Science and Engineering, Beijing University of Chemical Technology, 2014
B.S. Measurement and Control Technology and Instrumentation, Beijing University of Chemical Technology, 2010

Current Research

Title: “Electrochemical sensors based on wearable carbon textiles”

Abstract: Wearable sensors have attracted considerable interest owing to their tremendous promise for applications in various fields, such as clinical diagnosis, environmental pollution monitoring and food quality assessment, due to their practical advantages of operation convenience, low cost and in situ analysis mode. Among different sensing methods, electrochemical sensing is very popular due to its high efficiency and accuracy. Sensing materials are essential for the detection of analytes.

Based on the sensing materials, there are two kinds of electrochemical biosensors, enzymatic and non-enzymatic sensors. Compared with enzymatic sensors, non-enzymatic sensors show enhanced stability, simplicity, reproducibility, and cost effectiveness. Among a variety of electrode materials, carbon textile is flexible, conductive and stable in corrosive conditions. Furthermore, it provides large surface area, high porosity and a three dimensional structure, which are crucial for nanostructure-based electrochemical devices. It is also inexpensive and biocompatible among carbon-based materials. However, proper surface functionalization is needed to achieve good selectivity for the detection of specific analytes. Herein, we are developing wearable non-enzymatic electrochemical sensors for the detection of different biomarkers in human fluid.

Completed Research

Title: “Scalable Synthesis of Core-Vest Nanoparticles Assisted by Surface Plasmons”

Abstract: Compared with single-component nanocrystals, core-shell nanocrystals show better performance in various areas, such as energy harvesting and storage, catalysis, sensing and functionalized targeted cell therapy. The solution-based fabrication process is the most common strategy for synthesizing core-shell structures. However, the complex and difficult-to-scale fabrication procedures severely reduce their practical applications. Besides, the thermodynamically driven process of the fabrication of core-shell nanostructures possesses several constraints on their size and geometry, the most prominent being the high degree of uniformity in their shape. If energy (or matter) could be channeled with super-resolution, more complex architectures would become possible, such as partial cladding of complex nanoparticles with nontrivial shapes.

In this project, we exploit the plasmonic activity of the nanoparticle itself to help channel light into a nonuniform heatmap over the particle with sub-particle resolution. We show that surface plasmons which result from the coupling of light with the free electrons in a metal, can be harnessed to achieve a variety of pre-programmed designer core- shell nanostructures. By localizing the energy carried by far-field radiation onto nanometer-sized regions, surface plasmon effectively create hot blueprints that drive self- assembly of composite structures. Herein, several kinds of core-shell nanostructures are fabricated assisted by surface plasmon to illustrate the concept, and several possible applications of these complex nanomaterials are discussed.

Publications

  1. Siyi Cheng, Xiang Gao, Steven DelaCruz, Chen Chen, Zirong Tang, Tielin Shi, Carlo Carraro, Roya Maboudian. “In-situ formation of metal-organic framework derived CuO polyhedrons on carbon cloth for highly sensitive non-enzymatic glucose sensing.” Journal of Materials Chemistry B. 2019.
  2. Siyi Cheng, Steven DelaCruz, Chen Chen, Zirong Tang, Tielin Shi, Carlo Carraro, Roya Maboudian. “Hierarchical Co3O4/CuO nanorod array supported on carbon cloth for highly sensitive non-enzymatic glucose biosensing.” Sensors and Actuators B: Chemical (2019): 126860.
  3. Xiang Gao, Steven Delacruz, Siyi Cheng, David W. Gardner, Chenhui Zhu, Yuhui Xie, Carlo Carraro, Roya Maboudian, “Surface functionalization of carbon cloth with cobalt-porphyrin-based metal organic framework for enhanced electrochemical sensing”, Carbon, 2019, 148, 64-71.
  4. Chen Chen, Siyi Cheng, Tielin Shi, Yan Zhong, Yuanyuan Huang, Junjie Li, Guanglan Liao, and Zirong Tang, “Size Distribution Control of Copper Nanoparticles and Oxides: Effect of Wet-Chemical Redox Cycling.” Inorganic chemistry 58, no. 4 (2019): 2533-2542.
  5. Yan Zhong, Tielin Shi, Yuanyuan Huang, Siyi Cheng, Chen Chen, Guanglan Liao, and Zirong Tang, “Three-dimensional MoS2/Graphene Aerogel as Binder-free Electrode for Li-ion Battery.” Nanoscale research letters 14, no. 1 (2019): 85.
  6. Yuanyuan Huang, Liwei Lin, Tielin Shi, Siyi Cheng, Yan Zhong, Chen Chen, and Zirong Tang, “Graphene quantum dots-induced morphological changes in CuCo2S4 nanocomposites for supercapacitor electrodes with enhanced performance.” Applied Surface Science 463 (2019): 498-503.
  7. Yan Zhong, Tielin Shi, Yuanyuan Huang, Siyi Cheng, Guanglan Liao, and Zirong Tang, “One-step synthesis of porous carbon derived from starch for all-carbon binder-free high-rate supercapacitor.” Electrochimica Acta 269 (2018): 676-685.
  8. Junjie Li, Tielin Shi, Chen Feng, Qi Liang, Xing Yu, Jinhu Fan, Siyi Cheng, Guanglan Liao, and Zirong Tang. “The novel Cu nanoaggregates formed by 5 nm Cu nanoparticles with high sintering performance at low temperature.” Materials Letters 216 (2018): 20-23.
  9. Yuanyuan Huang, Tielin Shi, Yan Zhong, Siyi Cheng, Shulan Jiang, Chen Chen, Guanglan Liao, and Zirong Tang, “Graphene-quantum-dots induced NiCo2S4 with hierarchical-like hollow nanostructure for supercapacitors with enhanced electrochemical performance.” Electrochimica Acta 269 (2018): 45-54.
  10. Siyi Cheng, Tielin Shi, Chen Chen, Yan Zhong, Yuanyuan Huang, Xiangxu Tao, Junjie Li, Guanglan Liao, and Zirong Tang. “Construction of porous CuCo2S4 nanorod arrays via anion exchange for high-performance asymmetric supercapacitor.” Scientific reports 7, no. 1 (2017): 6681.
  11. Siyi Cheng, Tielin Shi, Yuanyuan Huang, Xiangxu Tao, Junjie Li, Chaoliang Cheng, Guanglan Liao, and Zirong Tang. “Rational design of nickel cobalt sulfide/oxide core-shell nanocolumn arrays for high-performance flexible all-solid-state asymmetric supercapacitors.” Ceramics International 43, no. 2 (2017): 2155-2164.
  12. Junjie Li, Xing Yu, Tielin Shi, Chaoliang Cheng, Jinhu Fan, Siyi Cheng, Tianxiang Li, Guanglan Liao, and Zirong Tang. “Depressing of CuCu bonding temperature by composting Cu nanoparticle paste with Ag nanoparticles.” Journal of Alloys and Compounds 709(2017):700-707.
  13. Li, Junjie, Xing Yu, Tielin Shi, Chaoliang Cheng, Jinhu Fan, Siyi Cheng, Guanglan Liao, and Zirong Tang. “Low-Temperature and Low-Pressure Cu–Cu Bonding by Highly Sinterable Cu Nanoparticle Paste.” Nanoscale research letters 12, no. 1(2017):255.
  14. Yan Zhong, Yan, Tielin Shi, Zhiyong Liu, Yuanyuan Huang, Siyi Cheng, Chaoliang Cheng, Xiaoping Li, Guanglan Liao, and Zirong Tang. “Scalable Fabrication of Flexible Solid‐State Asymmetric Supercapacitors with a Wide Operation Voltage utilizing Printable Carbon Film Electrodes.” Energy Technology 5, no. 5 (2017): 656-664.
  15. Chaoliang Cheng, Junjie Li, Tielin Shi, Xing Yu, Jinhu Fan, Guanglan Liao, Xiaoping Li, Siyi Cheng, Yan Zhong, and Zirong Tang. “A novel method of synthesizing antioxidative copper nanoparticles for high performance conductive ink.” Journal of Materials Science: Materials in Electronics 28, no. 18 (2017): 13556-13564.
  16. Shulan Jiang, Siyi Cheng, Yuanyuan Huang, Tielin Shi, and Zirong Tang. “High performance wire-shaped supercapacitive electrodes based onactivated carbon fibers core/manganese dioxide shell structures.” Ceramics International 43, no. 10 (2017): 7916-7921.
  17. Yuanyuan Huang, Tielin Shi, Shulan Jiang, Siyi Cheng, Xiangxu Tao, Yan Zhong, Guanglan Liao, and Zirong Tang. “Enhanced cycling stability of NiCo2S4@ NiO core-shell nanowire arrays for all-solid-state asymmetric supercapacitors.” Scientific reports 6 (2016): 38620.
  18. Yan Zhong, Tielin Shi, Zhiyong Liu, Siyi Cheng, Yuanyuan Huang, Xiangxu Tao, Guanglan Liao, and Zirong Tang. “Ultrasensitive non-enzymatic glucose sensors based on different copper oxide nanostructures by in-situ growth.” Sensors and Actuators B: Chemical 236 (2016): 326-333.
  19. Hu Long, Anna Harley-Trochimczyk, Siyi Cheng, Hao Hu, Won Seok Chi, Ameya Rao, Carlo Carraro, Tielin Shi, Zirong Tang, and Roya Maboudian. “Nanowire-assembled hierarchical ZnCo2O4 microstructure integrated with a low-power microheater for highly sensitive formaldehyde detection.” ACS applied materials & interfaces 8, no. 46 (2016): 31764-31771.
  20. Siyi Cheng, Tielin Shi, Xiangxu Tao, Yan Zhong, Yuanyuan Huang, Junjie Li, Guanglan Liao, and Zirong Tang. “In-situ oxidized copper-based hybrid film on carbon cloth as flexible anode for high performance lithium-ion batteries.” Electrochimica Acta 212 (2016): 492-499.
  21. Shulan Jiang, Tielin Shi, Xiaobin Zhan, Shuang Xi, Hu Long, Bo Gong, Junjie Li, Siyi Cheng, Yuanyuan Huang, and Zirong Tang. “Scalable fabrication of carbon-based MEMS/NEMS and their applications: a review.” Journal of Micromechanics and Microengineering 25, no. 11 (2015): 113001.

Presentations

  1. Siyi Cheng, Ying Li, Carlo Carraro, Roya Maboudian, “Non-enzymatic Electrochemical Sensors Based on Wearable Carbon Textile” Berkeley Sensors and Actuators Conference, March 2019 and September 2018 (Poster)
  2. Siyi Cheng, David Gardner, Marcus Worsley, Carlo Carraro, Roya Maboudian, “Two-dimensional materials-based aerogel on low-power microheater platform for gas sensing application” Berkeley Sensors and Actuators Conference, September 2018 (Poster)
  3. Siyi Cheng, Sinem Ortaboy, Hu Long, Carlo Carraro, and Roya Maboudian, “Non-Enzymatic Electrochemical Sensors Based on Wearable Carbon Textile”, Sensors Expo & Conference, June 2018, speaker.

Contact

siyic@berkeley.edu