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Education

• University of California, Los Angeles, CA, USA Sep. 2019 - Mar. 2023   
  Ph.D., Advisor: Xiaoyu (Rayne) Zheng
  
• Virginia Tech, Blacksburg, VA, USA (Transfered to UCLA) Jul. 2018 - Sep. 2019   
  Ph.D. student, Mechanical Engineering
  
• University of Florida, Gainesville, FL, USA Aug. 2016 - Jun. 2018   
  M.Sc., Mechanical Engineering
  

Experience/Projects

1. Research engineer Aug. 2023 – Present   
   Atomic Semi, Inc. (www.atomicsemi.com)
   
   
   
2. Postdoctoral researcher Apr. 2023 – Jul. 2023   
   AMML, UC Berkeley
   
   • Prototyped a 3D printing system using a DMD chip and NIR laser at 805nm wavelength to enable precise PDMS printing.
   • Developed a multi-material DLP system with a printing scale of 40x40mm for antenna development, expanding the capabilities of the printing technology.
   • Engineered a cutting-edge carbon fiber reinforced polymer tailored for self-sensing applications.
   
   
3. Graduate research assistant Jul. 2018 – Apr. 2023   
   AMML (Virginia Tech, UCLA, and UC Berkeley)
   
   • Designed and prototyped a 5-axis direct ink writing platform for fiber alignment.
   • Developed a continuous 3D printing system using oil as interface.
   • Proposed and built a scanning projection optical system to achieve large-scale high-resolution 3D printing, resulting in the fabrication of sample features from tens of micrometers to hundreds of millimeters.
   • Invented a methodology to manufacture ultra-lightweight (94% weight reduction) antennas.
   • Developed and optimized a multi-material 3D printing process for piezo composite, magnetic composite, ceramics, hydrogels, polymers, etc.
   • Proposed and integrated a tape-casting system into a projection stereolithography system for printing highly concentrated (up to 25 wt%) carbon fiber composites.
   • Please refer to this [portfolio document] for project details.
   
   
4. Co-Founded XAYAV Inc.: Commercialization of a desktop LCD 3D printer Apr. 2017 - May. 2018   
   XAYAV Inc. (www.xayav.com), Gainesville, FL, USA
   
   • Designed and prototyped a desktop LCD 3D printer by milling, lathe, CNC, hand tools, etc.
   • Finalized the manufacturing processes of the printer, including metal machining, sheet metal forming, die casting, acrylic molding, PCB manufacturing, silk screen printing, etc.
   • Investigated and visited suppliers (Shenzhen, China) for production; managed supply chain to balance inventories and distribution.
   • Successfully sold hundreds of printers in the USA.
   Photos: [Packaging design], [Manufacuture at Shenzhen], [Assemblying], [Model V], [First printer we saled]
   
   
5. Project: Development of various 3D printers Sep. 2016 - Mar. 2017   
   XAYAV Technology Team, Gainesville, FL, USA
   
   • Designed various types of 3D printers (FDM, SLS, DLP, and LCD 3D printers).
   • Prototyped 3D printers by milling, lathe, CNC, hand tools, etc.
   Photos: [Cutter], [LCD printer prototype], [3D printed demo1], [3D printed demo2], [3D printed demo3]
   
   

Publications

1. Charge-programmable photopolymers for 3D electronics via additive manufacturing [pdf][doi]
   Zhen Wang, Junbo Wang, Zhenpeng Xu, Ryan Hensleigh, Haotian Lu, Mack Sowers, Marcus A. Worsley, Yahya Rahmat-Samii, Xiaoyu (Rayne) Zheng
   In: Advanced Functional Materials, Jan 2024
   


2. Supramolecular assembly of blue and green halide perovskites with near-unity photoluminescence [pdf][doi]
   Cheng Zhu, Jianbo Jin, Zhen Wang, Zhenpeng Xu, Maria C. Folgueras, Yuxin Jiang, Can B. Uzundal, Han K. D. Le, Feng Wang, Xiaoyu (Rayne) Zheng, Peidong Yang
   In: Science, Jan 2024
   


3. Additive manufacturing of self‐sensing carbon fiber composites [pdf][doi]
   Zhenpeng Xu, Haotian Lu, Qiyi Chen, Seokpum Kim, Vlastimil Kunc, Xiaoyu (Rayne) Zheng
   In: Advanced Engineering Materials, Oct 2023
   


4. One-step method for the fabrication of pure and metal-decorated densified CNT films for effective electromagnetic interference shielding [pdf][doi]
   Fan Yang, Shengcun Ma, Chia Miang Khor, Yiming Su, Zahra Barani, Zhenpeng Xu, Arthur Boyko, Arpita Iddya, Naama Segev-Mark, Xiaoyu Zheng, Fariborz Kargar, Alexander A. Balandin, Guy Ramon, Igor De Rosa, Eric Hoek, David Jassby
   In: Carbon, Oct 2023
   


5. Rapid inverse design of metamaterials based on prescribed mechanical behavior through machine learning [pdf][doi]
   Chan Soo Ha, Desheng Yao, Zhenpeng Xu, Chenang Liu, Han Liu, Daniel Elkins, Matthew Kile, Vikram Deshpande, Zhenyu Kong, Mathieu Bauchy, Xiaoyu Zheng
   In: Nature Communications, Sep 2023
   


6. Materials design for charge-programmed additive manufacturing of antennas [pdf][doi]
   Zhen Wang, Zhenpeng Xu, Junbo Wang, Yahya Rahmat-Samii, Xiaoyu Zheng
   In: IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Jul 2023
   


7. An overview of novel antennas manufactured via charge-programmed multi-material 3D printing [pdf][doi]
   Junbo Wang, Zhenpeng Xu, Zhen Wang, Xiaoyu Zheng, Yahya Rahmat-Samii
   In: IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Jul 2023
   


8. Development of a low-cost lightweight advanced k-band horn antenna with charge-programmed deposition 3D printing [pdf][doi]
   Junbo Wang, Zhenpeng Xu, Zhen Wang, Xiaoyu Zheng, Yahya Rahmat-Samii
   In: IEEE Antennas and Wireless Propagation Letters, Apr 2023
   


9. On the elastodynamic properties of octet truss-based architected metamaterials [pdf][doi]
   Mourad Oudich, Edward Huang, Hyeonu Heo, Zhenpeng Xu, Huachen Cui, Nikhil JRK Gerard, Xiaoyu Zheng, Yahya Rahmat-Samii
   In: Applied Physics Letters, Apr 2023
   


10. Fully 3D-printed lightweight combination of a circularly polarized transmitarray and a feed horn [pdf][doi]
    Junbo Wang, Ryan Hensleigh, Zhenpeng Xu, Zhen Wang, Xiaoyu Zheng, Yahya Rahmat-Samii
    In: IEEE AP-S/URSI 2022, July 2022
    


11. Design and printing of proprioceptive three-dimensional architected robotic metamaterials [pdf][doi]
    Huachen Cui, Desheng Yao, Ryan Hensleigh, Haotian Lu, Ariel Calderon, Zhenpeng Xu, Sheyda Davaria, Zhen Wang, Patrick Mercier, Pablo Tarazaga, Xiaoyu Zheng
    In: Science, June 2022
    News: UCLA Samueli Newsroom, Video


12. The coupled strength and toughness of interconnected and interpenetrating multi-material gyroids [pdf][doi]
    Padmeya P. Indurkar, Angkur Shaikeea, Zhenpeng Xu, Huachen Cui, Xiaoyu Zheng, Vikram Deshpande
    In: MRS Bulletin, Apr 2022
    


13. Ultra-lightweight transmitarray antenna enabled by charge-programmed three-dimensional multi-Material printing [pdf][doi]
    Junbo Wang, Ryan Hensleigh, Zhenpeng Xu, Anastasios Papathanasopoulos, Xiaoyu Zheng, Yahya Rahmat-Samii
    In: NRSM-URSI 2022, Dec 2021
    


14. Vat photopolymerization of fly-like, complex micro-architectures with dissolvable supports [pdf][doi]
    Zhenpeng Xu, Ryan Hensleigh, Nikhil JRK Gerard, Huachen Cui, Mourad Oudich, Wentao Chen, Yun Jing, Xiaoyu Zheng
    In: Additive Manufacturing, Sep 2021
    


15. Stiff and strong, lightweight bi-material sandwich plate-lattices with enhanced energy absorption [pdf][doi]
    Meng-Ting Hsieh, Chan Soo Ha, Zhenpeng Xu, Seokpum Kim, H. Felix Wu, Vlastimil Kunc, Xiaoyu Zheng
    In: Journal of Materials Research, Aug 2021
    


16. Three-dimensional trampolinelike behavior in an ultralight elastic metamaterial [pdf][doi]
    Nikhil JRK Gerard, Mourad Oudich, Zhenpeng Xu, Desheng Yao, Huachen Cui, Christina J. Naify, Alec Ikei, Charles A. Rohde, Xiaoyu Zheng, Yun Jing
    In: Physical Review Applied, Aug 2021
    


17. Current challenges and potential directions towards precision microscale additive manufacturing – Part II: Laser based curing [pdf][doi]
    Dipankar Behera, Samira Chizari, Lucas A Shaw, Michael Porter, Ryan Hensleigh, Zhenpeng Xu, Nilabh K Roy, Liam G Connolly, Xiaoyu Zheng, Sourabh Saha, Jonathan B Hopkins, Michael A Cullinan
    In: Precision Engineering, Mar 2021
    


18. Current challenges and potential directions towards precision microscale additive manufacturing–Part IV: Future perspectives [pdf][doi]
    Dipankar Behera, Samira Chizari, Lucas A Shaw, Michael Porter, Ryan Hensleigh, Zhenpeng Xu, Ximeng Zheng, Liam G Connolly, Nilabh K Roy, Robert M Panas, Sourabh K Saha, Xiaoyu Zheng, Jonathan B Hopkins, Shih-Chi Chen, Michael A Cullinan
    In: Precision Engineering, Mar 2021
    


19. A general method to synthesize and sinter bulk ceramics in seconds [pdf][doi]
    Chengwei Wang, Weiwei Ping, Qiang Bai, Huachen Cui, Ryan Hensleigh, Ruiliu Wang, Alexandra H Brozena, Zhenpeng Xu, Jiaqi Dai, Yong Pei, Chaolun Zheng, Glenn Pastel, Jinlong Gao, Xizheng Wang, Howard Wang, Ji-Cheng Zhao, Bao Yang, Xiaoyu Zheng, Jian Luo, Yifei Mo, Bruce Dunn, Liangbing Hu
    In: Science, May 2020
    News: Featured as Front Cover of Science, University of Maryland News, ScholarSet
    


20. Charge-programmed three-dimensional printing for multi-material electronic devices [pdf][doi]
    Ryan Hensleigh, Huachen Cui, Zhenpeng Xu, Jeffrey Massman, Desheng Yao, John Berrigan, Xiaoyu Zheng
    In: Nature Electronics, Apr 2020
    News: UCLA Samueli Newsroom


21. Additive manufacturing of two-phase lightweight, stiff and high damping carbon fiber reinforced polymer microlattices [pdf][doi]
    Zhenpeng Xu, Chan Soo Ha, Ruthvik Kadam, John Lindahl, Seokpum Kim, H Felix Wu, Vlastimil Kunc, Xiaoyu Zheng
    In: Additive Manufacturing, Mar 2020
    

Teaching Experience

• Teaching Assistant, 3D Printing and Materials Design, University of California, Los Angeles (Winter 2021)
• Teaching Assistant, 3D Printing and Materials Design, University of California, Los Angeles (Fall 2020)
• Teaching Assistant, Rapid Prototyping, Virginia Tech (Spring 2019)

Technical Skills

• Characterization tools: Tensile/Compression Tester, Scanning Electron Microscopy, DMA, Laser Vibrometer
• Tools and Technologies: Miller, Lathe, CNC, Mechatronics, Mechanical design, Machining
• CAD software: Autodesk Inventor, SolidWorks, Netfabb, nTopology
• Other software: MATLAB, LabVIEW, Arduino, COMSOL
• Programming languages: C/C++, Python, Java, HTML

Academic Services

• Sub-reviewer, Symposium on Computational Fabrication [SCF'21]
• Reviewer, Journal of Materials Research
• Reviewer, 3D Printing and Additive Manufacturing

Community Services

• During the beginning of the COVID-19 pandemic (Spring 2020), I worked with my advisor and printed over 500 face shields using FDM printers in our lab. The shields were donated to combine LA and local hospitals. Together, we'll get through this!
  Photos: [Face shields], [Thanks note from community]