Zeqian Tong
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Optical Imaging | Biomedical Instrumentation | Scientific Computing
About Me
Research Interests
Research Interests
I am interested in optical imaging for biomedical applications, with a focus on cerebral blood flow, physiological sensing, and the instruments and software that make these measurements possible. My work spans laser speckle imaging, AFM-IR nanoimaging, and imaging photoplethysmography.
Education: Joint B.Sc. program in Physics, Anhui University and Stony Brook University, 2026.
Contact: zeqian.tong@stonybrook.edu
Research Experience
Time-Gated Speckle Contrast Optical Spectroscopy for Cerebral Blood Flow
Research Aide (full-time) · Stony Brook University · Feb 2026–present
Supervisor: Prof. Ulas Sunar
Primary developer of SCOS automation and analysis tools: automated power-meter/galvo alignment, Python-based NI-DAQ control for camera–galvo synchronization, and MATLAB quality-control and processing workflows. Diagnosed residual-frame ghosting and frame-tag mismatches, coordinated investigation with the camera manufacturer, and independently built a minimal SDK-based program to restore reliable high-speed acquisition.
Nanoimaging Using AFM-IR and s-SNOM
Research Assistant (part-time) · Stony Brook University · Aug 2025–Jun 2026
Supervisors: Prof. Xiaoji Xu and Prof. Mengkun Liu
Calibrated and aligned AFM-IR and s-SNOM systems for near-field imaging. Implemented a cost-effective, high-speed FPGA acquisition workflow on Moku:Go and independently developed Topo2stl, a Python tool for converting measured topography into 3D-printable models.
Development of an iPPG-Based Physiological Monitoring System
Research Intern (full-time, hybrid) · Chinese Academy of Sciences · Apr–Sep 2025
Supervisor: Prof. Liquan Guo
Developed a Python iPPG extraction pipeline and validated it against the laboratory’s MATLAB reference, achieving a Pearson waveform correlation of 0.99. Built a LabVIEW acquisition interface with real-time visualization and automated logging, and integrated and tested it with the experimental hardware.
Featured Research
Tools for Cerebral Blood Flow Imaging
Tools for Cerebral Blood Flow Imaging
A tool set for mapping cerebral blood flow with laser speckle contrast imaging (LSCI). This project connects my interests in biomedical optics, experimental instrumentation, and image analysis.
Selected Engineering Projects
Integrating Sphere
Integrating Sphere
Optical instrumentation
A modular, 3D-printed integrating sphere for low-cost optical measurements.
Moku:Go FFT Tools
Moku:Go FFT Tools
Scientific software
Real-time waveform acquisition, frequency analysis, and dominant-peak detection.
NinjaCap
NinjaCap
Biomedical prototyping
Auxetic structures for optical fiber holder design.
Beyond Research
Beyond Research
I build physical prototypes in my personal workshop, ZonicLab, and enjoy scale modeling with the Long Island Scale Model Society.
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