Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/159126
Title: Create a controllable self-propelled hydrogel swimmer
Authors: Yap, Darren Zhi Han
Keywords: Engineering::Mechanical engineering
Issue Date: 2022
Publisher: Nanyang Technological University
Source: Yap, D. Z. H. (2022). Create a controllable self-propelled hydrogel swimmer. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/159126
Project: B349
Abstract: Hydrogels remain a subject of interest due to their hydrophilic nature that allows for absorption of large volumes of water, non-toxicity, and capability to undergo both swelling and shrinkage to cater for controlled diffusions. When used as a fuel in swimmers, they allow for autonomous propulsions based off the Marangoni effect, which makes them highly useful in potential applications such as wastewater treatments and oil spill cleaning. This study outlines the preparation of triangular PDMS micro-swimmers driven by two different fuels: sodium alginate hydrogel precursor mixed with ethanol and crosslinked alginate hydrogel infused with ethanol. The triangular PDMS swimmers are fabricated with controlled dimensions to ensure they do not break surface tension of the solution, which is paramount for its autonomous propulsion. The swimmers are placed in calcium chloride solution where they swim autonomously and are recorded to analyse their speed and swimming duration for comparison, using a particle tracking program. Our results reveal that the hydrogel precursor-driven swimmers outperform their counterparts during the speed analysis, however there are inconclusive results during the comparison of their swimming durations. Ultimately, with their enormous amenability to customizations which can modify performances based on preferences, these hydrogels serve as promising vehicles for autonomous pollution cleaning.
URI: https://hdl.handle.net/10356/159126
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:MAE Student Reports (FYP/IA/PA/PI)

Files in This Item:
File Description SizeFormat 
Yap Zhi Han Darren Final Year Project Report submission.pdf
  Restricted Access
B349 CREATE A CONTROLLABLE SELF-PROPELLED HYDROGEL SWIMMER2.91 MBAdobe PDFView/Open

Page view(s)

26
Updated on Dec 9, 2022

Download(s)

1
Updated on Dec 9, 2022

Google ScholarTM

Check

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.