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在声子晶体的研究基础上,南京大学的陆延青、朱永元、闵乃本等提出了“离子型声子晶体”的概念,发展了相应的理论,对其长波光学性质进行深入研究,其结果已引起国内外同行的注目。美国 Science,1999,284:1822专门作了报道。声子晶体是一种弹性系数受到人工周期性调制的超晶格材料。声波在声子晶体中传播时,与电子在实际晶格和光波在光子晶体中传播一样,会形成能带
Based on the study of phononic crystals, the concepts of “ionic phononic crystals” were proposed by Lu Yanqing, Zhu Yongyuan and Min Naiben at Nanjing University. Corresponding theories were developed and their long-wave optical properties were further studied. The results Aroused the attention of domestic and foreign counterparts. American Science, 1999,284: 1822 made a special report. Phononic crystals are a type of superlattice material whose spring constant is artificially modulated periodically. When a sound wave propagates in a phononic crystal, it will form an energy band just like an electron will travel in the actual crystal lattice and light wave in a photonic crystal