<s>
George	O
Heilmeier	O
proposed	O
the	O
dynamic	O
scattering	O
effect	O
which	O
causes	O
a	O
strong	O
scattering	O
of	O
light	O
when	O
the	O
electric	O
field	O
applied	O
to	O
a	O
special	O
liquid	B-Device
crystal	I-Device
mixture	O
exceeds	O
a	O
threshold	O
value	O
.	O
</s>
<s>
a	O
liquid	B-Device
crystal	I-Device
with	O
negative	O
dielectric	O
anisotropy	O
(	O
aligns	O
the	O
LC	O
long	O
axis	O
perpendicular	O
to	O
the	O
electric	O
field	O
)	O
,	O
</s>
