论文部分内容阅读
可指方向的手表 数字手表不久将可同时用作指方向,即使多云天气也罢。英国不莱毛斯西南理工学院的研究人员已研制出一种电子传感器,可检测到地磁场的强度和方向。现在正进一步进行微型化,以便最后可装配在1cm见方的芯片上,装进手表内。 该传感器使用一种磁阻材料,即一种其电阻受磁场影响的镍铁混合材料。磁场影响材料原子中电子的自旋,而这又影响到原子疏散带电的运动电子的行为,因而也就影响到材料的电阻。上述研究人员用此材料在玻璃载体上印制线条,每条约50μm宽及1.5mm长。线条末端被连在一起以形成两条公开的平行S形曲线图形的
Watches that can point in the direction Digital watches will soon be used simultaneously as a direction, even in cloudy weather. Researchers at Southwestern Polytechnical Institute in Notre Dame, UK, have developed an electronic sensor that detects the intensity and direction of geomagnetic fields. Now further miniaturization, so that the final can be assembled in 1cm square chip, into the watch. The sensor uses a magnetoresistive material, a ferro-nickel material whose resistance is affected by a magnetic field. The magnetic field affects the spin of the electrons in the material atoms, which in turn affects the behavior of the moving electrons that the atom evacuates and charges, thereby affecting the resistance of the material. The researchers used this material to print lines on a glass carrier, each about 50 μm wide and 1.5 mm long. The ends of the lines are joined together to form two open parallel S-curve patterns