摘要：Light trapping is a constant pursuit in photonics because of its importance in science and *** mechanisms have been explored,including the use of mirrors made of materials or structures that forbid outgoing waves,and bound states in the continuum that are mirror-less but based on *** we report a compound method,combining lateral mirrors and bound states in the continuum in a cooperative way,to achieve a class of on-chip optical cavities that have high quality factors and small modal ***,light is trapped in the transverse direction by the photonic band gap of the lateral hetero-structure and confined in the vertical direction by the constellation of multiple bound states in the *** a result,unlike most bound states in the continuum found in photonic crystal slabs that are de-localized Bloch modes,we achieve light-trapping in all three dimensions and experimentally demonstrate quality factors as high as Q=1.09×10^(6)and modal volumes as low as V=17.74(λ_(0)/n)^(3)in the telecommunication *** further prove the robustness of our method through the statistical study of multiple fabricated *** work provides a new method of light trapping,which can find potential applications in photonic integration,nonlinear optics and quantum computing.

摘要：目的:探讨以认知-行为模型为理论基础设计的团体心理干预对于缓解大学生手机依赖问题的治疗效果。方法:采用便利取样的方式选择某大学存在手机依赖困扰的45名大学生,随机分为实验组(n=15)、安慰剂组(n=15)和对照组(n=15),对实验组进行基于认知-行为模型的手机依赖心理干预,安慰剂组接受与手机依赖主题无关的团体心理干预,对照组则正常生活,不参加任何心理辅导或咨询活动。3组被试均使用手机依赖指数量表(MPAI)中文版作为测评工具,同时结合个体的日均手机使用时长来共同探究干预前后各组实验数据的差异。结果:在前测中,各组的MPAI得分与日均手机使用时长均不存在显著差异(MPAI前测:F=0.79,P>0.05;日均手机使用时长前测:F=1.51,P>0.05)。但在后测中,实验组的MPAI得分与日均手机使用时长均得到了显著的改善(P<0.001),且都显著低于安慰剂组、对照组(P<0.01)。干预后1个月追踪测量显示,实验组各项数据依然显著低于其他两组,且与前测存在显著差异(P<0.001)。结论:基于认知-行为模型的团体心理干预能够有效缓解大学生的手机依赖水平,帮助其尽早摆脱对手机的过度使用,回归并保持健康的身心状态与生活方式。