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Protection of Platinum Catalyst
Micro-Scale driven Autonomous
Swimmers in the Medium of
Human Serum
1:30 PM 17/11/2016
Pam Liversidge Building F12
Presented By Jacob Humphries 4th Year MEng Candidate
Supervisor: Dr Stephen Ebbens
30/01/2017 © The University of Sheffield
2
Introduction
The Problem
Objective Aims
Scientific
Approach
Significance
of the Project
Conclusion
Contents
What are Autonomous
Swimmers?
30/01/2017 © The University of Sheffield
3
Micron to Nano-Scale devices for small scale
transport problems.
Au Pt
Motor
Pt
30/01/2017 © The University of Sheffield
4
Pt
Pt
Pt
2H2O2
2H2O2
O2
O2
O2
2H2O
2H2O
Peroxide Fuelled Swimmers
2H2O
2H2O2
Ebbens, S, 2016, pers. comm.
The Problem
30/01/2017 © The University of Sheffield
5
Pt
Polystyrene
Mixture Velocity (μm s-1)
3% H202 1800
3% H202 +10% Human
Serum
76
Ebbens, S, 2016, pers. comm.
30/01/2017 © The University of Sheffield
6
Objective Aims of my
Project
• Analyse the effectiveness of porous coatings
such as silica in protecting the platinum catalyst.
• By varying coating thickness, peroxide
concentrations and exploring alternative coating
30/01/2017 © The University of Sheffield
7
Scientific Approach
Pt
Polystyrene
H2O2 H2O2
H2O O2
30/01/2017 © The University of Sheffield
8
The Real World
Significance of the Project
• Microfluidics
• Micron-scale fluid pumps
• Lab on a Chip outside the body
Restrepo-Perez, L. R., 2014. Trappiing self-propelled micromotors with microfabricated chevron and heart shaped chips. Royal Society Of Chemistry, 14, 1515-1518.
Add to MyReferences
Conclusion
• Autonomous Swimmers
• Protection of Platinum using Silica
• Trying to use in Human Serum
• Microfluidics/ Lab on a chip
30/01/2017 © The University of Sheffield
9
To
Discover
And
Understand.

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Podium presentation2.1

  • 1. Protection of Platinum Catalyst Micro-Scale driven Autonomous Swimmers in the Medium of Human Serum 1:30 PM 17/11/2016 Pam Liversidge Building F12 Presented By Jacob Humphries 4th Year MEng Candidate Supervisor: Dr Stephen Ebbens
  • 2. 30/01/2017 © The University of Sheffield 2 Introduction The Problem Objective Aims Scientific Approach Significance of the Project Conclusion Contents
  • 3. What are Autonomous Swimmers? 30/01/2017 © The University of Sheffield 3 Micron to Nano-Scale devices for small scale transport problems. Au Pt Motor Pt
  • 4. 30/01/2017 © The University of Sheffield 4 Pt Pt Pt 2H2O2 2H2O2 O2 O2 O2 2H2O 2H2O Peroxide Fuelled Swimmers 2H2O 2H2O2 Ebbens, S, 2016, pers. comm.
  • 5. The Problem 30/01/2017 © The University of Sheffield 5 Pt Polystyrene Mixture Velocity (μm s-1) 3% H202 1800 3% H202 +10% Human Serum 76 Ebbens, S, 2016, pers. comm.
  • 6. 30/01/2017 © The University of Sheffield 6 Objective Aims of my Project • Analyse the effectiveness of porous coatings such as silica in protecting the platinum catalyst. • By varying coating thickness, peroxide concentrations and exploring alternative coating
  • 7. 30/01/2017 © The University of Sheffield 7 Scientific Approach Pt Polystyrene H2O2 H2O2 H2O O2
  • 8. 30/01/2017 © The University of Sheffield 8 The Real World Significance of the Project • Microfluidics • Micron-scale fluid pumps • Lab on a Chip outside the body Restrepo-Perez, L. R., 2014. Trappiing self-propelled micromotors with microfabricated chevron and heart shaped chips. Royal Society Of Chemistry, 14, 1515-1518. Add to MyReferences
  • 9. Conclusion • Autonomous Swimmers • Protection of Platinum using Silica • Trying to use in Human Serum • Microfluidics/ Lab on a chip 30/01/2017 © The University of Sheffield 9