Abstract
We have fabricated micron-sized NiFe ring-shaped sensors that show localized detection of the radial component of the dipolar fringing field from a single, partially magnetized, micron-sized NiFe sphere. Specifically, the anisotropic magnetoresistance response to this fringing field is strongly peaked when the sphere is directly above the center of the ring and rapidly decreases to zero when the sphere is outside the ring. Such a device is a model system for a proposed biosensor array architecture that could operate similarly to high-density random access computer memory.
Keywords
MagnetoresistanceRing (chemistry)BiosensorCondensed matter physicsMaterials scienceAnisotropyDipoleMagnetic fieldField (mathematics)PhysicsNanotechnologyOpticsChemistryQuantum mechanics
Affiliated Institutions
Related Publications
Magnetotransport: An ideal probe of anisotropy energies in epitaxial films (invited)
Magnetotransport measurements provide an ideal probe to determine the various anisotropy energies in epitaxial magnetic films. The extraordinary Hall effect (EHE) can be used to...
Electrical transport properties of thin epitaxially grown iron films
We have determined the components of the magnetoresistance tensor through the fifth order in the magnetization direction cosines for four epitaxially grown iron films with thick...
Magnetic properties of sandwiches and superlattices of fcc Fe(001) grown on Cu(001) substrates
The magnetic properties of Cu/Fe epitaxial sandwiches and superlattices have been measured using Brillouin light scattering and ferromagnetic resonance. All of the samples are p...
Fabrication of Large-Area Patterned Nanostructures for Optical Applications by Nanoskiving
Cost-effective and convenient methods for fabrication of patterned metallic nanostructures over the large (mm2) areas required for applications in photonics are much needed. In ...
Biomedical Applications of Layer‐by‐Layer Assembly: From Biomimetics to Tissue Engineering
Abstract The design of advanced, nanostructured materials at the molecular level is of tremendous interest for the scientific and engineering communities because of the broad ap...
Publication Info
- Year
- 2002
- Type
- article
- Volume
- 81
- Issue
- 12
- Pages
- 2211-2213
- Citations
- 374
- Access
- Closed
External Links
Social Impact
Altmetric
PlumX Metrics
Social media, news, blog, policy document mentions
Citation Metrics
374
OpenAlex
Cite This
M. M. Miller,
G. A. Prinz,
Shuo Cheng
et al.
(2002).
Detection of a micron-sized magnetic sphere using a ring-shaped anisotropic magnetoresistance-based sensor: A model for a magnetoresistance-based biosensor.
Applied Physics Letters
, 81
(12)
, 2211-2213.
https://doi.org/10.1063/1.1507832
Identifiers
- DOI
- 10.1063/1.1507832