从便携角度考虑,东西总是越小越好,比如手机,又比如植入人体的各种医用设备等。近年来,此类设备的体积确实在不断缩小,但是其中一个关键部件—天线的体积却不见减小。一直以来,科研工作者都在想法缩小天线的体积。最近,美国东北大学孙年祥教授带领的团队在这一领域做出了突破,其成果发表在《自然》杂志上。天线利用电磁波共振来接收信息,为了产生共振,传统天线的长度必须和它要接收的电磁波的波长 From the portable point of view, things are always smaller and better, such as mobile phones, and for example, the implantation of various medical devices and other human body. The volume of such devices has indeed been shrinking in recent years, but the size of one of the key components, the antenna, has not diminished. All along, researchers are thinking of reducing the size of the antenna. Recently, a team led by Professor Sun Nienxiang of Northeastern University made a breakthrough in this field, the result of which was published in Nature magazine. Antenna utilizes electromagnetic resonance to receive information. In order to generate resonance, the length of the conventional antenna must be equal to the wavelength of the electromagnetic wave it is to receive