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High performance magnesium anode in paper-based microfluidic battery, powering
on-chip fluorescence assay
#MMPMID25332741
Koo Y
; Sankar J
; Yun Y
Biomicrofluidics
2014[Sep]; 8
(5
): 054104
PMID25332741
show ga
A high power density and long-lasting stable/disposable magnesium battery anode
was explored for a paper-based fluidic battery to power on-chip functions of
various Point of Care (POC) devices. The single galvanic cell with magnesium foil
anode and silver foil cathode in Origami cellulose chip provided open circuit
potential, 2.2?V, and power density, 3.0 mW/cm(2). A paper-based fluidic galvanic
cell was operated with one drop of water (80 ?l) and continued to run until it
was dry. To prove the concept about powering on-chip POC devices, two-serial
galvanic cells are developed and incorporated with a UV-light emitting diode
(??=?365?nm) and fluorescence assay for alkaline phosphatase reaction. Further,
detection using smart phones was performed for quantitative measurement of
fluorescent density. To conclude, a magnesium-based fluidic battery paper chip
was extremely low-cost, required minute sample volumes, was easy to dispose of,
light weight, easy to stack, store and transport, easy to fabricate, scalable,
and has faster analysis times.