Braille provides an invaluable tactile reading system for the visually impaired. However, current braille keyboards and technology are external mechanical devices limited by their large form factor, high expense long refresh rates. A magnetic touchpad in which dots formed through a ferrofluid medium is potential device that could promise to replace providing higher rates, lower cost give easy i...

1 Problem In 1896, Birkeland reported [1, 2, 3, 4] studies of a Crookes tube when a strong, straight electromagnet was placed outside and to the left, as in the figures below.

We are currently constructing a prototype quadrupole electromagnet for the proposed Induction Linac Systems Experiment (ILSE) at LBL. ILSE will address many physics and engineering issues relevant to the design of a heavyion fusion driver accelerator. The pulsed electromagnet has two layers of current windings and will produce a field gradient exceeding 25 T/m at a repetition rate of 1 Hz stead...

BACKGROUND: High infection rate of grain harvest, produced in Russia annually, by causative agents fungal and bacterial diseases, causing significant quantitative losses decreasing storage quality, revealed low efficiency operation chemical treatment, nowadays widely used production for disinfection seeds. Therefore, development electrophysical methods, which are environmentally friendly effect...

An arrangement is described for performing magneto-optical Kerr effect (MOKE) spectroscopy in polar geometry with a conventional C-frame or H-frame type electromagnet. It uses an additional mirror which eliminates the need for an electromagnet pole piece with an axial hole and allows for easy switching between polar MOKE geometry and longitudinal or transverse MOKE geometries. A theoretical ana...

Research on Maglev (Magnetic Levitation) train is currently being conducted in Korea, concerning Urban Transit (110 km/h of maximum speed), semi-high-speed (200 km/h of maximum speed), and high-speed (550 km/h of maximum speed) trains. This paper presents a research study on the levitation and guidance systems for the Korean semi-high-speed maglev train. A levitation electromagnet was designed,...

In the mid-low speed Maglev train, levitation force produced by end electromagnets is influenced train due to eddy current effect, especially front-end at high speed. this paper, effect of calculated an analytical method, which validated Finite Element method (FEM). To compensate a decrease force, two improved structures electromagnet modules are designed and compared. One permanent magnet comp...

The electromagnet pneumatic proportional servo valve is widely used in industrial automation, medical equipment, scientific composition detectors, and other fields that require precise adjustment of high-pressure air flow due to its simple working structure, large output power, frequency response, good control performance. However, the pressure small, making it vulnerable impact external enviro...