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        My name is Wan-Yu Chang , studying in the ultrafast optical semiconductor laboratory affiliated with Professor Hye-Young Ahn in Optoelectronic Engineering, National Yang-Ming Chiao-Tung University. In addition to learning professional knowledge in the field of semiconductors, I also actively enrich my related knowledge in the field of electronics. In addition, I also participated in many extracurricular activities in my spare time, to train my leadership skills and team communication skills and build up the ability of independent thinking, judgment, and analysis, so that I can have a deeper understanding of work or practice in the future. A good foundation has been established in a wider field.


Master's degree
Hsinchu , TW
Mobile : +886 910261716

 Email : [email protected]


semiconductor physics

material physics

geometric optics

optical system

silicon photonics

Programming skills






language ability

English Listening: Moderate Speaking: Moderate Reading: Proficient Writing: Moderate

TOEIC :810


National Yang Ming Chiao Tung University,Dept. of Photonics — Master's Degree,2020/3 ~present

Dissertation on the study of carrier dynamics of material(TiN/p-GaN),focusing on discovering the hot-electron decay time after excite the material and unique properties between hot-hole  whether transfer to another material. Two temperature Mode is used in the process to discover the most ideal results.

National Tsing Hua University,Dept. of Physics — Bachelor's Degree 2015/9-2019/6

Learning experience

#Ultrafast hot-hole injection modifies hot electron dynamics in TiN/p-GaN heterostructures with Physics 

#applications of epsilon-near-zero materials.

The measurement method is to use the Pump-Probe optical path designed by myself to measure the physical properties, to detect the behavior of the carriers after excitation, and though Terahertz Time-Domain Spectroscopy method analyzes electrical properties. At the wavelength where its dielectric constant tends to zero, it can excite stronger changes, so that the carrier decay time can reduce to 1ps, which can be applied to electronic components for making optical switches (>100GHz). It is supplemented by Python, Matlab and LabVIEW to predict the theoretical value of material properties (including two temperature mode and the use of DMD to strengthen the transparent conductive electrode) and the operating machine.

 Another project is to further characterize the TiN/p-type GaN heterostructure, and to study the effect of TiN when holes moving to p-type GaN under specific circumstances.

Participation Program

Novel materials research with remarkable linear and nonlinear properties

Application of Thermal Radiation Dynamic Manipulation of Electric Field Tunable Titanium Nitride Metasurface Structures

Research on Ultrafast Optical and Nonlinear Properties of Hot Carriers in Refractory Metals 

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