<s>
A	O
holographic	B-Algorithm
sensor	I-Algorithm
is	O
a	O
device	O
that	O
comprises	O
a	O
hologram	B-Algorithm
embedded	O
in	O
a	O
smart	O
material	O
that	O
detects	O
certain	O
molecules	O
or	O
metabolites	O
.	O
</s>
<s>
This	O
detection	O
is	O
usually	O
a	O
chemical	O
interaction	O
that	O
is	O
transduced	O
as	O
a	O
change	O
in	O
one	O
of	O
the	O
properties	O
of	O
the	O
holographic	B-Algorithm
reflection	O
(	O
as	O
in	O
the	O
Bragg	B-Device
reflector	I-Device
)	O
,	O
either	O
refractive	O
index	O
or	O
spacing	O
between	O
the	O
holographic	B-Algorithm
fringes	O
.	O
</s>
<s>
A	O
holographic	B-Algorithm
sensor	I-Algorithm
aims	O
to	O
integrate	O
the	O
sensor	O
component	O
,	O
the	O
transducer	O
and	O
the	O
display	O
in	O
one	O
device	O
for	O
fast	O
reading	O
of	O
molecular	O
concentrations	O
based	O
in	O
colorful	O
reflections	O
or	O
wavelengths	O
.	O
</s>
<s>
Certain	O
molecules	O
that	O
mimic	O
biomolecule	O
active	O
sites	O
or	O
binding	O
sites	O
can	O
be	O
incorporated	O
into	O
the	O
polymer	O
that	O
forms	O
the	O
holographic	B-Algorithm
film	O
in	O
order	O
to	O
make	O
the	O
holographic	B-Algorithm
sensors	I-Algorithm
selective	O
and/or	O
sensitive	O
to	O
certain	O
medical	O
important	O
molecules	O
like	O
glucose	O
,	O
etc	O
.	O
</s>
<s>
The	O
holographic	B-Algorithm
sensors	I-Algorithm
can	O
be	O
read	O
from	O
a	O
fair	O
distance	O
because	O
the	O
transducer	O
element	O
is	O
light	O
that	O
has	O
been	O
refracted	O
and	O
reflected	O
by	O
the	O
holographic	B-Algorithm
grating	O
embedded	O
in	O
the	O
sensor	O
.	O
</s>
<s>
Some	O
of	O
the	O
metabolites	O
detected	O
by	O
a	O
holographic	B-Algorithm
sensor	I-Algorithm
are	O
:	O
</s>
