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This is a feasibility study of the design and construction of a metal detector system using a fiber-optic Mach–Zehnder interferometer and a sensor employing a novel polymeric magnetostrictive material. This ferromagnetic polymeric metal detector system is small and easy to fabricate, offering relatively high sensitivity and resistance to the radio frequency interference common in most electromagnetic metal detectors. The metal detection is achieved by disrupting the magnetic flux density that encompasses the magnetostrictive sensor. This article discusses the magnetic properties of the ferromagnetic polymers and the results of detecting metal objects of different shapes and geometries. [ABSTRACT FROM AUTHOR]

This paper presents a new metal detector using a fiberoptic magnetostriction sensor. The metal sensor uses a fiber-optic Mach-Zehnder interferometer with a newly developed ferromagnetic polymer as the magnetostrictive sensing material. This polymeric magnetostrictive fiberoptic metal sensor is simple to fabricate, small in size, and resistant to RF interference (which is common in typical electromagnetic type metal detectors). Metal detection is based on disruption of the magnetic flux density across the magnetostriction sensor. In this paper, characteristics of the material being sensed and magnetic properties of the ferromagnetic polymers will be discussed.

The purpose this paper is the development a novel polymeric fiber-optic magnetostrictive metal detector, using a fiber-optic Mach-Zehnder interferometer and polymeric magnetostrictive material. Metal detection is based on the strain-induced optical path length change steming from the ferromagnetic material introduced in the magnetic field. Varied optical phase shifts resulted largely from different metal objects. In this paper, the preliminary results on the different metal material detection will be discussed.

Our research team has developed a MEMS based on a 2D micro image display device that can potentially overcome the size reduction limits while maintaining the high image resolution and field of view obtained by mirror based display systems. The basic design of the optical scanner includes a micro-fabricated polymer based cantilever waveguide that is electromechanically deflected by a 2D piezoelectric actuator. From the distal tip of the cantilever waveguide, a light beam is emitted and the direction of propagation is displaced along two orthogonal directions. The waveforms for the X-Y actuators and the LED light modulation are controlled using a field programmable gate array (FPGA). In this paper we will extend our display development by reporting more recent integration of components including actuators and light sources with a controller. Here we will describe the design, fabrication of the latest polymeric waveguide cantilever beam steering device driven by 2-D piezoelectric actuator using aerosol deposited PZT thick film actuators. The mechanical and optical design for the microresonating scanner will be discussed. In addition, the mechanical and optical performance of the 2-D scanner will be presented.