Microrobotic devices have been widely investigated as promising alternatives to convent biomedical technologies. By utilizing magnetic materials, microrobotic devices can be wirelessly manipulated by external magnetic fields without the use of additional power transfer units or batteries. Thus, the overall structures of the microrobotic devices can be effectively minimized to be applied for the human body. To manipulate the devices, various methods such as a magnetic force-based pulling method, cilia-like beating method, and helical propulsion method have been proposed. Conventional helical microrobotic devices have generally been manufactured by using three-dimensional (3D) printing technologies. These technologies are useful when manufacturing spatially complex structures such as the helical structures. However, due to the limitations of the extrusion and lamination processes, microrobotic devices can be constructed with low degree of precision and can have poor surface roughness under the 3D printing technologies. This may cause undesirable damages to the human body tissues. Furthermore, 3D printing requires long processing time due to post-processing to remove unwanted body parts. To improve surface quality and shorten processing time, this research uses laser machining technology. Before directly applying laser machining to fabricate helical microrobotic devices, laser ablation characteristics on Acrylonitrile Butadiene Styrene (ABS), which is a common material used for 3D printing, are investigated.

1.
B. J.
Nelson
,
I. K.
Kaliakatsos
and
J. J.
Abbott
,
Annual Review of Biomedical Engineering
12
(
1
),
55
85
(
2010
).
2.
M.
Sitti
,
H.
Ceylan
,
W.
Hu
,
J.
Giltinan
,
M.
Turan
,
S.
Yim
and
E.
Diller
,
Proceedings of the IEEE
103
(
2
),
205
224
(
2015
).
3.
S.
Kim
,
C.
Laschi
and
B.
Trimmer
,
Trends in Biotechnology
31
(
5
),
287
294
(
2013
).
4.
S. M.
Jeon
,
G. H.
Jang
,
H. C.
Choi
,
S. H.
Park
and
J. O.
Park
,
Journal of Applied Physics
111
(
7
),
07E702
(
2012
).
5.
S. M.
Jeon
,
G. H.
Jang
and
W. S.
Lee
,
IEEE Transactions on Magnetics
50
(
11
),
1
4
(
2014
).
6.
S.
Yim
,
K.
Goyal
and
M.
Sitti
,
IEEE/ASME Transactions on Mechatronics
18
(
4
),
1413
1418
(
2013
).
7.
S.
Fusco
,
F.
Ullrich
,
J.
Pokki
,
G.
Chatzipirpiridis
,
B
.
ÖOuml;zkale
,
K. M.
Sivaraman
,
O.
Ergeneman
,
S.
Pané
and
B. J.
Nelson
,
Expert opinion on drug delivery
11
(
11
),
1815
1826
(
2014
).
8.
S.
Jeon
,
G.
Jang
,
H.
Choi
and
S.
Park
,
IEEE Transactions on Magnetics
46
(
6
),
1943
1946
(
2010
).
9.
K. E.
Peyer
,
S.
Tottori
,
F.
Qiu
,
L.
Zhang
and
B. J.
Nelson
,
Chemistry – A European Journal
19
(
1
),
28
38
(
2013
).
10.
K. E.
Peyer
,
L.
Zhang
and
B. J.
Nelson
,
Nanoscale
5
(
4
),
1259
1272
(
2013
).
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