Apparatus and methods for passing a focused laser beam through a thin ferrofluid cell creates a spatial distribution in the refractive index of the ferrofluid and generates a diffraction ring patterns. Using a pair of perpendicularly placed ferrofluid cells, two sets of diffraction ring patterns can be produced on two viewing screens. Deformations in the diffraction patterns due to an acceleration can be viewed on the screens, providing a ferrofluid accelerometer. By applying an electric or a magnetic field on a thin ferrofluid sample, the light passing through the sample can be modulated by the field, providing a light modulator. The apparatus and method has applications for detecting acceleration information within a gyroscope and for use in toys.
Application Serial Number
Assignee at Issuance
College of Sciences
Assignee at Filing
Nonprovisional Application Record
Luo, Weili; Du, Tengda; and Huang, Jie, "Ferrofluid 3-D Gyroscope and Light Modulator." (2001). UCF Patents. 188.