Engineering Proceedings, Volume 109, Issue 1

A multimodal sensor was developed to record dissolved oxygen, L*a*b* colour, temperature, and pH. This work builds on an existing model that correlates blood oxygen saturation with L*a*b* colour values. An L*a*b* colour sensor was constructed from an...

This research focuses on developing innovative nanoparticle-based drug delivery systems to enhance therapeutic efficacy while minimizing adverse effects. We engineered biocompatible polymeric nanoparticles capable of encapsulating various therapeutic...

This work introduces a general solution for printing wavelength-selective bulk-heterojunction photosensitive organic field effect transistors (PS-OFETs) by addressing electrode thickness variation and the feasibility of color selectivity in detecting...

Melanin is one of the key light absorbers in skin and is responsible for the colour of the skin. This study evaluates the responsivity of different skin tones to white light within the visible spectral range of 300–700 nm on 12 participants. Th...

Electronic quick response (e-QR) codes provide access to real-time sensor data using smartphone readers and internet connectivity. Printed electronics and hybrid integration on flexible substrates is a promising solution for wide-scale and low-cost d...

Recent investigations into C-reactive protein (CRP) dynamics have shown that by evaluating the change in CRP level in a patient over time, it is possible to distinguish between bacterial and viral infections more accurately thereby guiding antimicrob...

Digital holographic microscopes provide a microscopy solution with a resolution in the low-micrometre range that offers similar performance to optical microscopy, but as a relatively low-cost alternative. The most significant cost saving is due to th...

This paper presents an innovative and low-cost approach to the dispensing of multiple liquids on a microfluidic chip with the aim of dispensing liquids in a controlled sequence. The project focused on the design and development of a microfluidic liqu...

Tuberculous meningitis (TBM) is a severe illness that is predominantly observed in countries with a high burden of tuberculosis. It is primarily found in infants and human immunodeficiency virus (HIV)-infected adults, and, if left untreated, causes i...

The prevalence of (TDF)-induced Acute Kidney Injury (AKI) in Africa is a concern, given the widespread use of Tenofovir disoproxil fumarate (TDF) for Human Immunodeficiency Virus (HIV) therapy. Current tests used to detect AKI are based on increased...

This study investigates the use of impedance spectroscopy for fingerprinting aqueous salt solutions. By analysing solutions containing Sodium Nitrate (${\mathrm{NaNO}}_3$), Sodium Sulphate (${\mathrm{Na}}_2{\mathrm{SO}}_4$), and their mixtures, we explore how impedance data can potentially...

Optical spectroscopy is a versatile analytical technique with a diverse range of applications. Point-of-need systems are required to be affordable, miniaturized instruments that are easy to use. This paper proposes using an array of LEDs to create pa...

A rapid screening method to identify suitable candidate inks for printed electronics applications is necessary. Herein, we investigate the in-plane thermoelectric properties of PEDOT:PSS for energy harvesting applications on human skin using silver n...

Aptasensors are biosensors that rely on an aptamer’s ability to selectively bind targets. To produce a signal indicative of successful binding, aptamers are frequently modified with reporter agents. However, modification of aptamers with specif...

The extraction of DNA from biological samples precedes many research and commercial applications. This study compares surface treatments of cellulose (a low-cost binding matrix) to enhance binding and elution of DNA to paper-based dipsticks. Cellulos...

Carbon nanotubes have shown great promise in drug delivery systems as they can easily penetrate the cell membrane. Herein, carbon nanotubes functionalized with polyethylene glycol and folic acid were used to improve target specificity in breast and c...

Several approaches to producing lab-on-chip (LOC) devices have been developed in the last 20 years, including laser cutting of acrylic sheets and laminating them with adhesive films. While this route allows for rapid manufacture of devices, it cannot...

We present a simple, rapid and low-cost multi-layer mold fabrication method for production of polydimethylsiloxane (PDMS) lab-on-chip (LOC) devices. The new approach offers resource-strained researchers access to microfluidic lab-on-chip fabrication...

In submitting conference proceedings to Engineering Proceedings, the Volume Editors of the proceedings would like to certify to the publisher that all papers published in this volume have been subjected to peer review by the designated expert referee...

The Micro Manufacturing Convergence Conference 2024 (MMC 2024) is hosted by Stellenbosch University’s Department of Electrical and Electronic Engineering, in partnership with the Department of Science and Innovation (DSI) and the Nano-Micro Man...