Low-frequency(LF)wireless communications play a crucial role in ensuring antiinterference,long-range,and efficient communication across various environments.However,in conventional LF communication systems,their anten...Low-frequency(LF)wireless communications play a crucial role in ensuring antiinterference,long-range,and efficient communication across various environments.However,in conventional LF communication systems,their antenna size is required to be inversely proportional to the frequency,so that their mobility and flexibility are greatly limited.Here we introduce a novel prototype of LF receiving antennas based on optically levitated nanoparticles,which overcomes the size-frequency limitation to reduce the antenna size to the hundred-nanometer scale.These charged particles are extremely sensitive to external electric field as mechanical resonators,and their resonant frequencies are adjustable.The effectiveness of these antennas was experimentally demonstrated by using the frequency shift keying(2FSK)modulation scheme.The experimental results indicate a correlation between error rate and factors such as transmission rate,signal strength,and vacuum degree with a signal strength of approximately 0.1V/m and a bit error rate below 0.1%.We extend the application of levitated particle mechanical resonators as an entirely new type of compact LF antennas,which may be utilized in long-distance communications in extreme environments.展开更多
基金supported by National Key Research and Development Program of China(2022YFB3203402)Major Project of Natural Science Foundation of Zhejiang Province(LD22F050002)+2 种基金Major Scientific Research Project of Zhejiang Lab(2019MB0AD01)institute-initiated Research Project of Zhejiang Lab(2024SSYS0014)National Natural Science Foundation of China(62005248).
文摘Low-frequency(LF)wireless communications play a crucial role in ensuring antiinterference,long-range,and efficient communication across various environments.However,in conventional LF communication systems,their antenna size is required to be inversely proportional to the frequency,so that their mobility and flexibility are greatly limited.Here we introduce a novel prototype of LF receiving antennas based on optically levitated nanoparticles,which overcomes the size-frequency limitation to reduce the antenna size to the hundred-nanometer scale.These charged particles are extremely sensitive to external electric field as mechanical resonators,and their resonant frequencies are adjustable.The effectiveness of these antennas was experimentally demonstrated by using the frequency shift keying(2FSK)modulation scheme.The experimental results indicate a correlation between error rate and factors such as transmission rate,signal strength,and vacuum degree with a signal strength of approximately 0.1V/m and a bit error rate below 0.1%.We extend the application of levitated particle mechanical resonators as an entirely new type of compact LF antennas,which may be utilized in long-distance communications in extreme environments.
