Patent ID: 11906869
Assignee: ELSTAR DYNAMICS PATENTS B.V.
Field: nan (nan)
Classification: CPC nan | IPC G

Claim 30:
31. A method of operating an optical modulator, the method comprising:
providing an optical modulator, wherein the optical modulator comprises:
at least first and second substrates, wherein the first and second substrates are optically transparent,
four or more electrodes, wherein at least two electrodes are provided at an internal side of the first substrate, and at least two electrodes are provided at an internal side of the second substrate,
a fluid provided in between the substrates, the fluid comprising nanoparticles and/or microparticles, wherein the particles are electrically charged or chargeable, and wherein the particles are adapted to absorb and/or reflect light,
wherein the at least four electrodes comprise an electrically conducting material with a resistivity of less than 100 nΩm at 273 K;

switching the optical modulator to an on-state, comprising:
applying a positive potential to an electrode on the first substrate, and applying a negative potential to an electrode on the second substrate, causing particles to flow to the vicinity of the electrode of the first substrate, and to substantially align with the electrode on the first substrate.