Summary
With over a decade of expertise in the field of high-temperature superconductivity (HTS), I have honed my skills in material growth research, characterization techniques, application development, and commercialization. Additionally, I possess full-stack proficiency in developing large-scale equipment. My core competencies include:
- Designing and building flexible and scalable automated systems
- Conducting reel-to-reel inline/offline measurement of long HTS tapes
- Analyzing dynamic electromagnetic characteristics of superconducting coils
- Managing pilot-scale film deposition processes, such as MOCVD and IBAD
I take pride in staying up-to-date with the latest advancements in the HTS field, and I have a proven track record of delivering results within strict deadlines. My experience and skills make me a valuable asset to any organization looking to achieve excellence in the HTS domain.
Education
- Advisor: Dr. Venkat Selvamanickam (former SuperPower CTO)
- Reel-to-reel Characterization towards Feedback Control in Manufacturing Long REBCO High-Temperature Superconducting Tapes
- Advisor: Dr. Zhenghe Han (former Innova Superconductor CEO)
- Studied the fundamental mathematics and physics as well as embedded development as a hobby. Capstone project: Inductance of superconducting coils
Work Experiences
Develop superconducting magnet technologies for reduced-cost fusion next step devices; also support the PPPL magnet program in the development of magnet user facilities for basic research.
Besides academic research, also supported other projects in the group as a full-stack engineer on: Mechanical design and machining; Electrical design and wiring; Electronic design and circuit making; Automation and programming; Data acquisition and post-processing
As the first employee of a startup company, led the development and commercialization of various superconductor characterization tools and superconducting applications
Conducted research on superconductor characterization techniques and superconducting applications
- Implemented a reel-to-reel 77K self-field critical current measurement technique for long HTS tapes
- Invented and realized a passive open magnetic field shielding technique in form of superconducting coil groups (PCT/CN/US patent granted)
In charge of automation in the 1st generation HTS tape (BSCCO/Bi-2223) production line
- Process control and monitoring during heat treatment
- Reel-to-reel tape thickness and width monitoring
Assisted in embedded development on
- Wireless display transmission (WiDi) in collaboration with Lenovo
- Cross-device process migration on ARM platforms in collaboration with Nokia
Research Projects
To prove the extendability of the world-record performance in short REBCO samples to production scale
- Fully designed and implemented the electronic circuit, the electrical wiring, the control strategy and the program framework of the system
- Partially designed the mechanical structures and fully assembled the hardwares
- Successfully manufactured over 50m uniform high-performance single tape
- Reused the developed software framework to support another two MOCVD systems
![[image]](assets/images/mocvd.jpg){kind=link}
To routinely examine the quality of the produced long REBCO tapes by extracting their 2D performance distributions
- Designed and developed a reel-to-reel motion system enabling the REBCO tapes going between room environment and 65K vacuum
- Implemented a reciprocal Hall probe scanner and a rotary Hall probe scanner under low temperature
- Successfully measured the 77K/65K critical current density profile of long REBCO tapes with external magnetic field in range 0-5T
![[image1]](assets/images/5t.png){kind=link}
![[image2]](assets/images/5t1.png){kind=link}
To monitor the REBCO and the dopants lattice qualities inline as a solid feedback source for real-time closed-loop process control
- Integrated a X-ray source and a 2D detector in the Advanced MOCVD System by customized mechanical structures
- Invented a numerical method to automatically detect peak of interest in the 2D XRD exposures and rectify the image with the presence of vibration and curvature
- Reused the developed code to monitor bi-texture quality of buffer templates in an IBAD system by RHEED
- Developed a high precision (>85%) machine learning model to predict the tape performance without post-processing
![[image]](assets/images/xrd1.png){kind=link}
![[animation]](assets/images/xrd.gif){kind=link}
To provide electromechanical properties when developing high-strength REBCO tapes for high-fields applications
- Built a tensile I-V testing and a torsion I-V testing system
- Extracted the 77K self-field critical current performances under various strains/stresses
To understand the dynamic eletromagnetic characteristics of HTS coils to better guide the design of non-DC superconducting applications
- Simulated the current distributions in HTS coils with various dimensions by finite element method (utilizing ANSYS)
- Designed and implemented an automated platform for measuring dynamic eletromagnetic properties, including inductance and AC loss, of HTS conductors
- Discovered and verified the nonlinear behavior of the inductance in HTS coils and revised the inductive voltage and stored energy
Skills & Proficiency
- Organized ELEVATE interactive student sessions in 2020 and 2022 Applied Superconductivity Conference (ASC) conferences
- Led over twenty undergraduate / master / doctoral RAs in research activities
- Collaborated with over six research groups in exploring control strategies
- PLC / microcontrollers / hardware & software embedded development
- Statistical and machine learning-based data analysis
- Python / C++ / C# / Matlab / Julia / Mathematica
- Electromagnetic / mechanical / thermal / general analysis
- Comsol / ANSYS / Python / Julia / in-house code
- CAD (Solidworks / Inventor / FreeCAD)
- Drilling / Milling / Lathe / CNC / 3D printing
- Digital and analog circuit (KiCAD)
- Relational database (MySQL / MariaDB / SQLite)
- Time-series database (InfluxDB)
- HTML5 / CSS3 / PHP / Javascript / Python-Flask
Honors & Awards
(2nd Prize)
(Best Oral Presentation)
Appointments
Publications
Publications including journal papers, conference proceedings and patents.