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oCVD
Reactor Insert

A crucible insert for an oxidative chemical vapor deposition (oCVD) reactor, reverse-engineered from physical lab hardware, modeled in SolidWorks, and visualized as a full machine render in Rhino3D.

AMED Lab, SDSU
SolidWorks + Rhino3D
Research
01 Overview

This project was part of research in the Advanced Manufacturing for Energy Devices (AMED) Lab at San Diego State University, led by Dr. Meysam Heydari Gharahcheshmeh. The lab develops conducting and semiconducting polymer films using chemical vapor deposition methods, including oxidative chemical vapor deposition (oCVD).

In oCVD, the crucible holds a solid oxidant powder that is heated by resistive coils inside the reactor until it sublimates into a vapor. That vapor reacts with a monomer vapor on a temperature-controlled substrate to grow a thin conducting polymer film. My role was to model this crucible insert and then produce a clean visualization of the full machine.

Rendered oCVD reactor with crucible insert
Final Rhino3D render of the full oCVD reactor, with the crucible insert positioned inside the chamber
02 Measuring the Hardware

Rather than working from a drawing, I measured the existing crucible hardware directly in the lab using digital calipers. Those measurements, including the body diameter shown here at 53.27 mm, became the dimensional basis for the CAD model, so the digital part matched the real component.

Measuring the crucible hardware with digital calipers
Measuring the physical crucible hardware with digital calipers, reading 53.27 mm across the body
03 Reference and Modeling

I also referenced a commercial evaporation-source design to inform the internal geometry, in particular the layered structure of an outer shell, an internal heater cage, and a ceramic crucible cup. Working from the measurements and that reference, I modeled the crucible in SolidWorks as a multi-part assembly: a base cup, an internal mesh heater insert, and a top cap. The exploded view shows how the pieces stack together.

Commercial evaporation source reference
Commercial evaporation-source design used as an external reference for the internal geometry
SolidWorks exploded view of the crucible assembly
SolidWorks exploded view: base cup, internal mesh heater insert, and top cap
04 Visualization in Rhino3D

I modeled the crucible and its components in SolidWorks. The surrounding machine geometry already existed, so my work in Rhino3D was the full visual treatment: assigning every material and color across the chamber, fittings, and crucible, and tuning the lighting to produce a clean, readable hero image of the complete oCVD reactor.

05 Motivation

My motivation was to support the lab's research with work that bridges hands-on measurement and digital design: turning a real piece of lab hardware into an accurate CAD model, and then into a presentation-quality visualization that communicates how the oCVD system is put together.