Point-of-care diagnostic devices, micrototal analysis (μTAS) systems, lab-on-a-chip development, and biomedical research rely heavily upon microfluidic management and innovative micropump design. Here, we describe the design and prototype deployment of a magnetic shape memory (MSM) micropump capable of submicroliter per minute flow rates. The pump contains no valves or moving parts in the fluid channel and is capable of bidirectional fluid transport. This pump was employed as the mechanism to deliver small intracranial dosages of ketamine and tetrodotoxin (TTX) at 0.33 μl/min during in vivo electrophysiological recordings in anesthetized rats, performing to required specifications.

References

1.
Chin
,
C. D.
,
Linder
,
V.
, and
Sia
,
S. K.
,
2012
, “
Commercialization of Microfluidic Point-of-Care Diagnostic Devices
,”
Lab Chip
,
12
(
12
), pp.
2118
2134
.
2.
Iverson
,
B. D.
, and
Garimella
,
S. V.
,
2008
, “
Recent Advances in Microscale Pumping Technologies: A Review and Evaluation
,”
Microfluid. Nanofluid.
,
5
(
2
), pp.
145
174
.
3.
Sackmann
,
E. K.
,
Fulton
,
A. L.
, and
Beebe
,
D. J.
,
2014
, “
The Present and Future Role of Microfluidics in Biomedical Research
,”
Nature
,
507
(
7491
), pp.
181
189
.
4.
Rios
,
A.
,
Zougagh
,
M.
, and
Avila
,
M.
,
2012
, “
Miniaturization Through Lab-on-a-Chip: Utopia or Reality for Routine Laboratories? A Review
,”
Anal. Chim. Acta
,
740
, pp.
1
11
.
5.
Laser
,
D. J.
, and
Santiago
,
J. G.
,
2004
, “
A Review of Micropumps
,”
J. Micromech. Microeng.
,
14
(
6
), pp.
R35
R64
.
6.
Jani
,
J. M.
,
Leary
,
M.
,
Subic
,
A.
, and
Gibson
,
M. A.
,
2014
, “
A Review of Shape Memory Alloy Research, Applications and Opportunities
,”
Mater. Des.
,
56
, pp.
1078
1113
.
7.
Ullakko
,
K.
,
Wendell
,
L.
,
Smith
,
A.
,
Müllner
,
P.
, and
Hampikian
,
G.
,
2012
, “
A Magnetic Shape Memory Micropump: Contact-Free, and Compatible With PCR and Human DNA Profiling
,”
Smart Mater. Struct.
,
21
(
11
), p.
115020
.
8.
Smith
,
A. R.
,
Saren
,
A.
,
Järvinen
,
J.
, and
Ullakko
,
K.
,
2015
, “
Characterization of a High-Resolution Solid-State Micropump That Can Be Integrated Into Microfluidic Systems
,”
Microfluid. Nanofluid.
,
18
(
5–6
), pp.
1255
1263
.
9.
Geipel
,
A.
,
2008
, “
Novel Two-Stage Peristaltic Micropump Optimized for Automated Drug Delivery and Integration Into Polymer Microfluidic Systems
,” Doctoral dissertation, University of Freiburg, Freiburg im Breisgau, Germany.
10.
Ryu
,
K. S.
,
Shaikh
,
K.
,
Goluch
,
E.
,
Fan
,
Z.
, and
Liu
,
C.
,
2004
, “
Micro Magnetic Stir-Bar Mixer Integrated With Parylene Microfluidic Channels
,”
Lab Chip
,
4
(
6
), pp.
608
613
.
11.
Kellis
,
D.
,
Smith
,
A.
,
Ullakko
,
K.
, and
Mullner
,
P.
,
2012
, “
Oriented Single Crystals of Ni-Mn-Ga With Very Low Switching Field
,”
J. Cryst. Growth
,
359
, pp.
64
68
.
12.
Webster
,
P. J.
,
Ziebeck
,
K. R. A.
,
Town
,
S. L.
, and
Peak
,
M. S.
,
1984
, “
Magnetic Order and Phase-Transformation in Ni2MnGa
,”
Philos. Mag. B
,
49
(
3
), pp.
295
310
.
13.
Wiig
,
H.
, and
Reed
,
R. K.
,
1983
, “
Rat Brain Interstitial Fluid Pressure Measured With Micropipettes
,”
Am. J. Physiol.
,
244
(
2
), pp.
H239
H246
.http://ajpheart.physiology.org/content/244/2/H239
14.
Csicsvari
,
J.
,
Jamieson
,
B.
,
Wise
,
K. D.
, and
Buzsáki
,
G.
,
2003
, “
Mechanisms of Gamma Oscillations in the Hippocampus of the Behaving Rat
,”
Neuron
,
37
(
2
), pp.
311
322
.
15.
Colgin
,
L. L.
,
2016
, “
Rhythms of the Hippocampal Network
,”
Nat. Rev. Neurosci.
,
17
(
4
), pp.
239
249
.
16.
Smith
,
A. R.
,
Tellinen
,
J.
, and
Ullakko
,
K.
,
2014
, “
Rapid Actuation and Response of Ni–Mn–Ga to Magnetic-Field-Induced Stress
,”
Acta Mater.
,
80
, pp.
373
379
.
17.
Dunand
,
D. C.
, and
Mullner
,
P.
,
2011
, “
Size Effects on Magnetic Actuation in Ni-Mn-Ga Shape-Memory Alloys
,”
Adv. Mater.
,
23
(
2
), pp.
216
232
.
18.
Chernenko
,
V. A.
,
Anton
,
R. L.
,
Kohl
,
M.
,
Barandiaran
,
J. M.
,
Ohtsuka
,
M.
,
Orue
,
I.
, and
Besseghini
,
S.
,
2006
, “
Structural and Magnetic Characterization of Martensitic Ni-Mn-Ga Thin Films Deposited on Mo Foil
,”
Acta Mater.
,
54
(
20
), pp.
5461
5467
.
19.
Kohl
,
M.
,
Agarwal
,
A.
,
Chernenko
,
V. A.
,
Ohtsuka
,
M.
, and
Seemann
,
K.
,
2006
, “
Shape Memory Effect and Magnetostriction in Polycrystalline Ni-Mn-Ga Thin Film Microactuators
,”
Mater. Sci. Eng. A
,
438–440
, pp.
940
943
.
You do not currently have access to this content.