CNU Planar Hall Resistance - Thermal stability & field sensitivity : Indirect exchange coupling, FM/AFM - Increasing active area : Hybrid AMR/PHR sensor - Wearable biochip sensor: Flexible MR substrate -Applications : o Biochip sensors o Single bead magnetometry o Ferrofluid driplet o Magnetic phase transition
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CNU Planar Hall Resistance - KOCWelearning.kocw.net/contents4/document/wcu/2012/Chungnam/... · 2013. 7. 26. · CNU Planar Hall Resistance - Thermal stability & field sensitivity
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CNU Planar Hall Resistance- Thermal stability & field sensitivity :
Base Signal Mag Bacteria_1 Mag Bacteria_2 Mag Bacteria_3 Mag bead Mag bead remove
Vol
tage
(V)
Field (Oe)
-300 -200 -100 0 100 200 300
0.0
0.5
1.0
1.5
2.0
0 50 100 150 200 250 300
1.44
1.46
1.48
1.50
1.52
Vol
tage
(mV
)
Time (sec)
Bacteria spay
Bead drop
Bead wash
2D assay: Bacteria detection
Magnetosomes
2D assays
The voltage change during the repeated drop and washing of bead
-fluidic channel integrated with sensor
Punch card( ~ 1980s)
See poster: p. 71
Nanosized Spin-Crossover Materials
TEM image of 250 ± 40 nm nanoparticles and the corresponding size histogram. (The largest dimension of each nanoparticle was used for the statistics.)
(a) The voltage change associated with change of properties of SCO particles. (b) The diamagnetic/paramagnetic phases are characterised by a lower/higher voltage. (c) The insets show the colour change of the particles: pink in diamagnetic low spin state (d) and white in the paramagnetic high spin phase. (b) Reflectance measurements ( = 550 ±40 nm) (e) of the [Fe(hptrz)3](OTs)2 SCO nanoparticles on the sensor surface.