Hall sensors widely dominates the field of magnetic
sensing and they are basically producing information in terms of voltage with
respect to applied field. The produced output depends on several parameters
such as carrier mobility, carrier concentration, thickness and device
geometries. In brief materials with higher mobility and less thickness provides
better candidates for such purposes. Looking at those parameters, gold-based
Hall devices may not be thought of as the best candidate for magnetic field
sensing, however, this does not suggest that it cannot be used for biosensing
purposes. Gold presents an advantage of potential label-free biosensing device
development since it can easily be functionalized for biosensing purposes. In
this study, the feasibility of gold-based Hall devices was investigated through
different fabrication techniques with and without adding separate layers
including materials such as copper, nickel and chromium. The characterization
has revealed that devices with smaller dimensions produces better output. The
results showed that using gold to fabricate Hall sensors has merit for potential
label-free biosensing purposes by designing a suitable geometry and following relevant
microfabrication techniques.
Primary Language | English |
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Subjects | Electrical Engineering |
Journal Section | Research Article |
Authors | |
Publication Date | June 1, 2020 |
Published in Issue | Year 2020 |
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