32 results about "Oersted" patented technology

A Q-Chip MEMS magnetic device comprises a thin-film electronic circuit for implantation in the Track-2 area of a magnetic stripe on the back of a credit card. The Q-Chip MEMS magnetic device periodically self-generates new sub-sets of magnetic data that are to be read in combination with other magnetic data that is permanently recorded in the surrounding surface of the magnetic stripe. A collocated battery and microcontroller provide operating power and new data for magnetic bit updates. A swipe sensor triggers such updates by sensing electrical contact with a legacy card reader. Several thin-film coils of wire are wound end-to-end around a common, flat, ferrous core. These are driven by the microcontroller. In one instance, such core comprises “hard” magnetic material with a coercivity of 200-300 Oersteds. Magnetic data written from the corresponding adjacent coils will persist for later readings by a legacy card reader. In another instance, the core comprises “soft” magnetic material with a coercivity of about one Oersted. A media stripe of “hard” magnetic film material overlays respective coils to receive magnetic data transfers. Magnetic data written from the corresponding adjacent coils will persist in the overlaying hard media for later readings by a legacy card reader. In a data input mode, the thin-film coils can be used as readers to provide updates and new programming to the microcontroller.

The invention relates to a composite reaction method for low-carbon olefin. A raw material of the low-carbon olefin is fed into a magnetic stabilized bed reactor and subjected to contact reaction with magnetic strong acid resin, the reaction temperature is between 50 and 110 DEG C, the reaction pressure is 0.1 to 0.3MPa, the liquid volume airspeed is 0.5 to 100 h<-1>, and the magnetic field intensity of the magnetic stabilized bed reactor is 10 to 1,500 oersteds. The method uses the magnetic strong acid resin to catalyze the low-carbon olefin to carry out composite reaction in the magnetic stabilized bed reactor, improves the effects of mass transfer and heat transfer of a reaction system greatly, and reduces energy consumption. In actual operation, the method can load and unload a catalyst at any time and carry out ex-situ regeneration without stopping running of the device.

The present invention discloses a method utilizing a femtosecond laser non-mask method to prepare a magnetic sensitive microstructure unit. The method comprises the following steps: (1) manufacturing a magnetic membrane in precipitation mode according to the sequence of a substrate, a buffer layer, a magnetic layer and a protective layer; and (2) using femtosecond laser as a light source, accurately controlling the position of a sample platform through a computer, conducting non-mask irradiation of the magnetic membrane to obtain the magnetic sensitive microstructure unit. Parameters of the femtosecond laser includes that single pulse energy is 5-50 mu joules, the pulse width is 90-150 femtoseconds, the wavelength is 800 nanometers, the pulse frequency is 10-100 hertzes, the movement speed of the sample table is 60-500 micrometers per minute, and an induced magnetic field of 0-500 oersteds is applied along the direction which is paralleled to or perpendicular to the membrane surface of the magnetic membrane during irradiation according to requirements. The method is simple, efficient and controllable, and is without prefabrication of masks.