2 results about "Pyroelectric crystal" patented technology

A method for producing a neutrons includes triggering a raising or a lowering of a temperature of a pyroelectric crystal of less than about 40° C. to produce a voltage of negative polarity of at least −100 keV on a surface of a deuterated or tritiated target coupled thereto. A deuterium ion source is pulsed to produce a deuterium ion beam. The accelerating of the deuterium ion beam is achieved by accelerating voltage of the pyroelectric crystal toward the deuterated or tritiated target to produce neutrons. Furthermore, the pyroelectric crystal, the deuterated or tritiated target, and the deuterium ion source are coupled to a common support. The method also includes throwing the common support housing the pyroelectric crystal, the deuterated or tritiated target, and the deuterium ion source near an unknown threat for identification thereof.

The invention discloses a surface-mounted production method of a pyroelectric sensor, and relates to the technical field of sensor manufacturing, and the surface-mounted production method comprises the following steps: manufacturing a PCB bottom plate, and carrying out the backflow installation of a pyroelectric conditioning chip; dispensing a conductive adhesive material on the PCB bottom plate, fixing the supporting column, and drying and curing; dispensing a conductive adhesive material on the top of the support column, fixing the pyroelectric crystal, and drying and curing the pyroelectric crystal; dispensing conductive silver paste on the edge of the PCB bottom plate, attaching a PCB enclosure, drying and curing; and mounting an optical filter on the PCB enclosure, pouring an adhesive around the optical filter, and drying and curing the optical filter. The pyroelectric sensor produced or manufactured by using the patch type production method has the characteristics of low cost, high reliability and excellent electromagnetic shielding performance, and the production method also has the characteristic of high process compatibility.