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美国科学家最近开发出利用红外线在微型芯片上移动微小粒子的新方法。这一方法将来有可能用于制造微型生物传感器和其他精密纳米器件。多年来,科学家一直在利用“光镊”技术研究和操控微小生物结构甚至单个原子。所谓“光镊”是一种经过超精确对焦的光束,又被称为“无形的机械手”。由于光束中的单个光子在撞击粒子时能产生微小的作用力,
American scientists recently developed a new method of using infrared light to move tiny particles on a microchip. This method may in the future be used to make microbiosensors and other precision nanodevices. Over the years, scientists have been using “optical tweezers ” technology to study and control the micro-biological structure or even a single atom. The so-called “optical tweezers” is a super-precise focused beam, also known as “invisible robot ”. Since a single photon in the beam can produce a slight force when it hits the particle,