Nanophotonic Malaria Diagnostic Lab

Optical LSPR & Hemozoin Biosensing Simulation • Tanzanian Research by Amos Kiyumbi

Microfluidic Nanophotonic Sensor Chamber Flow: Active (15 μL/min)

Near-Field Plasmon: Evanescent Field Active

Parasitemia: 250 parasites/μL

Laser Wavelength: 635 nm (Red)

Nanoparticle Array

Magneto-Optical Hemozoin Alignment Cross-Polarization Filter

LSPR Extinction & Resonance Shift Δλ: +8.42 nm

Refractive Index: n = 1.354

Plasmon Shift (Δλ)

+8.42 nm

Signal-to-Noise (SNR)

26.4 dB

Limit of Detection

4.2 p/μL

Diagnostic Call

POSITIVE

Low-Resource Technology Benchmark: Nanophotonics vs Standard Methods Point-of-Care Clinic Assessment

Diagnostic Modality	Limit of Detection (LOD)	Time-to-Result	Cost / Test (USD)	Power & Cold-Chain Requirements	Field Deployment Status
Nanophotonic LSPR Sensor (Simulated)	~4 - 10 parasites/μL	2.5 minutes	$0.18	Low (USB/Battery, Ambient 45°C)	Field Ready (Point-of-Care)
Giemsa Thick-Smear Microscopy	~50 - 100 parasites/μL	45 - 60 minutes	$1.80 - $3.50	Grid Electricity + Trained Microscopist	Standard Lab Reference
Lateral-Flow Rapid Antigen Test (RDT)	~200 - 800 parasites/μL	15 - 20 minutes	$1.20 - $2.40	Degrades >30°C (Needs Cold Chain)	Widespread, Misses Asymptomatic

Model integrates Dr. Amos Kiyumbi's localized plasmonic resonance (LSPR) extinction shifts, magnetic dipole torque on β-hematin biocrystals, and optical cross-polarization extinction.