Engineer Project

Colin Yee

Mattos Drive, Fremont CA, ***** Contact Info: 510-***-****; ***********@*****.***

4467

Summary of Qualifications

• Engineering experience with materials process development and characterization.

• Analytical problem solver with keen sense of project ownership and interdisciplinary collaboration skills

• Experience characterizing and analyzing process integration of PMOS transistors utilizing SEM, EDX, AFM.

• Knowledge of design and processing of micro/nanoscale devices: transistors, solar cells, microfluidic channels, and

optical mirror torsional actuator.

• Extensive knowledge and practice with the process development of photoluminescent semiconductor PbS

nanocrystals.

Project Experience

PMOS Transistor Fabrication & Characterization 1/14 4/14

Fabricated a PMOS transistor from a Si n type {100} device wafer utilizing microfabrication processing techniques:

photolithography, wet etchants methods, thermal diffusion, dopant implantation and spin coating techniques.

• Thin film and junction depth measurements using spectral reflectometer and a Profilometer.

• Analysis of metrology data between masking steps to determined reliability of the process techniques.

• Characterization of device performance using parameter analyzers and probe station.

Senior Project: Near IR Quantum Dot Synthesis 09/13 6/14

Developed an environmentally benign method for synthesizing lead (II) sulfide nanocrystals, which are to be used for future

research at Cal Poly for quantum dot solar cells and biological imaging.

• This project was established from personal outside research while generally senior projects are determined by the

administration.

• Developed a synthetic procedure for the fabrication of PbS nanocrystals with a excitation wavelength of 918nm.

• Characterization of nanocrystal surface morphology, viscoelasticity, and crystal structure by SEM, AFM, XRD.

• Statistical analysis of nanocrystal optical and electrical properties over varied reaction parameters (time, temperature,

pH, atmosphere, reagents) in order to optimize nanocrystal emission and excitation wavelengths.

Materials Testing Experience

Composite Panel Fabrication and Mechanical Testing 03/13 06/13

Fabrication of 3”x4”carbon fiber cross ply epoxy reinforced panel following steps: carbon epoxy prepreg laminate preparation,

debulking and lay up procedures, vacuum and autoclave cure procedure for T700/LC 930.

• Specimen cutting preparation according to ASTM flexure and short beam shear (SBS) testing methods.

• Conducted three point flexure and SBS tests to determine the composites panels’ modulus of rupture and possible

interlaminar shear stress.

• Impact testing of carbon fiber reinforced epoxy weave and unidirectional panels to determines the damage

resistance of multidirectional polymer matrix composite laminated plates.

Metallurgical Experience

• Used Differential Scanning Calorimetry (DSC) to detect phase transitions in Bismuth Tin alloys.

• Used the XRD to examine the crystal structure and molecular structure of cold worked and annealed

metallurgical samples.

• Conducted heat treatments: precipitation hardening of Al alloys, normalizing and annealing of Fe C alloys

Product Design Experience

Light Measurement System 09/12 11/12 Designed

and fabricated a LED spectral measurement system: fiber optic cable, LED drive circuit, cast aluminum alloy LED housing, two

Acrylonitrile butadiene styrene (ABS) rapid prototype 3D printed LED housing components.

• Fabricated an Al A356 alloy cast housing components to hold the LEDs and two ABS components in Solidworks.

• Evaluated the spectral emission profiles of red, green, and blue LEDs to determine if their performances matched the

color standard value for CRT displays with precision of 0.001 and 0.005 reproducibility.

• Conducted functional requirements, performance goals, quality function deployment, testing methodology, bill of

materials, statistical data analysis and interpretation design testing.

Medical Implant Design

Research and developed a new design for an intraocular lens (IOL) in order to reduce edge glare created from internal reflection of

light rays within the acrylic lens.

• Programmed a photo cell drive circuit with an Arduino open source electronic prototyping platform which recorded

light intensities.

• Conducted a DOE: identification of user and patient needs, FDA functional and performance standard specifications,

design testing, statistical analysis and interpretation of experimental data.

• Material and process selection considering optimal properties, cost analysis, material selection, shaping selection,

and process selection.

Research Experience

Nanorod Polymer Composite Characterization

• Conducted Atomic Force Microscopy imaging to study the structural alignment and phase distribution of ZnO nanorods.

• Used Scanning Electron Microscopy to confirm flocculation of nanorods was consistent with AFM results

Microfluidic Nanocrystal Synthesis 01/13 06/14

• Assisted a senior project that developed a technique to synthesize quantum dots using micro fluidic channels.

• Analyzed the distribution of CdSe quantum dot sizes with respect to changing temperatures, flow rates and time.

• Fabricated micro fluidic channel, designed in Solidworks, out of PDMA.

Education

California Polytechnic State University 09/09 06/14

B.S. Materials Engineering,

Areas of specific study:

Industrial Engineering Design and Manufacturing

Microfabrication Processes

Electric Circuit Theory

Fabricating Micro/Nano Scale

Devices Transport Phenomenon

Composite Materials Engineering Statistics

Materials Characterization

Organic Chemistry

Heat Transfer

Semiconductor Materials

Thermodynamics

Technical Writing

Key Skills

Metallurgical Testing: Metallography, optical microscopy, hardness testing, sample preparation, tensile testing, failure analysis.

Technical: Experience with characterization equipment SEM, EDX, AFM, Profilometer, XRD, STM, spectral reflectometer.

Computer: Profiecient using: Microsoft Excel, Word, PowerPoint, OceanOptics, and SolidWorks.

Leadership/Involvement

• Materials Engineering Student Society • (MESS) MicroSystems Technology Group (MST)

• Cal Poly Rugby Team (09 11)

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