Coursework

coursework

Lab reports, analysis code, and problem sets from my physics degree at NUS. The experimental work is up top; lecture-course assignments are below.

Experimental Work

Scanning Hall probe microscopy: Hall cross sensor and superconducting vortex lattice maps

hall effect in semiconductors

Measured Hall voltage and magnetoresistance across temperature to extract carrier type, mobility, and the intrinsic transition; includes uncertainty analysis.

Report Analysis Code

raman spectroscopy

Characterised carbon allotropes via D/G band ratios, estimated graphene layer count, and identified an unknown semiconductor wafer from its 521 cm⁻¹ mode.

Report Slides Analysis Code DLC Analysis

$Electron diffraction pattern from a silicon crystal (bulk spots and surface reconstruction)$

x-ray diffraction analysis

Used Bragg peaks to determine lattice constants and identify an unknown crystal; report documents calibration limits.

Report Analysis Code

Show more experiments

magnetic moment in helmholtz field

Calibrated Helmholtz field constant and tested scaling laws; corrected a model assumption during analysis.

Report Slides Analysis Code

Emission line spectra of the elements arranged as a periodic table

x-ray fluorescence analysis

Qualitative elemental identification of unknowns and quantitative brass composition via Gaussian deconvolution of overlapping K-lines.

Report Analysis Code

paschen curve & gas discharge

Mapped breakdown voltage vs. electrode gap at three pressures; extracted the second Townsend coefficient and identified the avalanche-to-streamer transition.

Report Analysis Code

$Laue diffraction pattern grid$

laue diffraction & x-ray crystallography

Indexed Laue back-reflection patterns and determined lattice parameters; combined with powder XRD for crystal identification.

Report Analysis Code

propagation of laser light (pll)

Measured Gaussian beam parameters and beam quality; report focuses on fitting and measurement limits.

Report

Fluorescence emission spectra of BSA and lysozyme

fluorescence spectroscopy: protein unfolding

Tracked acid denaturation of BSA and lysozyme via intrinsic Trp/Tyr fluorescence; observed emission shifts and intensity changes tied to tertiary structure loss.

Report Analysis Code

circular dichroism: protein secondary structure

Monitored α-helical content of BSA and lysozyme under acid denaturation using far-UV CD; lysozyme's disulfide bonds preserved its secondary structure.

Report Analysis Code