Hardware Reference
In-Depth Information
Fig. 5.6
Conflicts of droplet
routing. Mixing operations
M
3
and M
5
in Fig.
3.10
cannot be executed
concurrently
...
...
R
1
R
3
R
4
Droplet
R
5
Transportation direction of the
designated droplet
Fig. 5.7
The placement of
reservoirs that can reduce
conflicts of droplet routing
Mixing region for operations in
Subtree
M
7
...
...
R
4
R
7
R
1
R
2
R
6
...
R
5
R
3
The conflicts of droplet routing can be reduced by changing the configuration of
reservoir allocation. Assume that the outputs of reservoirs R
1
R
7
are placed as
shown in Fig.
5.7
, the degree of parallelism for operation execution will increase.
As shown in Fig.
3.10
, the operations in the subtree with root node M
9
(which is
written as
Subtree
M
9
) only involves droplets dispensed from reservoirs R
1
and R
4
.
Therefore all the operations of
Subtree
M
9
can be performed on the electrodes that
are directly connected with the output ports of R
1
and R
4
, as shown in Fig.
5.7
.As
there is no output port of other reservoir placed in this region, droplets dispensing
from R
1
and R
4
can be mixed without conflicts of droplet routing.
Similarly, operations in
Subtree
M
8
,
Subtree
M
13
,and
Subtree
M
14
can be performed
in the regions listed in Table
5.1
, where the set of electrodes that directly connects
the output ports of reservoirs R
i
, R
j
; :::; R
k
is written as
Region
.R
i
;R
j
;:::;R
k
/.
Hence all the mixing operations in the mixing tree can be performed “locally”, and
no conflict of droplet routing occurs.
