Agrawal Vipin, Pandey Vikash, Mitra Dhrubaditya
Nordita, KTH Royal Institute of Technology and Stockholm University, Hannes Alfvéns väg 12, 106 91 Stockholm, Sweden.
Department of Physics, Stockholm University, AlbaNova University Centre, Fysikum, 106 91 Stockholm, Sweden.
Phys Rev E. 2023 Sep;108(3):L032601. doi: 10.1103/PhysRevE.108.L032601.
We study the buckling of pressurized spherical shells by Monte Carlo simulations in which the detailed balance is explicitly broken-thereby driving the shell to be active, out of thermal equilibrium. Such a shell typically has either higher (active) or lower (sedate) fluctuations compared to one in thermal equilibrium depending on how the detailed balance is broken. We show that, for the same set of elastic parameters, a shell that is not buckled in thermal equilibrium can be buckled if turned active. Similarly a shell that is buckled in thermal equilibrium can unbuckle if sedated. Based on this result, we suggest that it is possible to experimentally design microscopic elastic shells whose buckling can be optically controlled.
我们通过蒙特卡罗模拟研究了受压球壳的屈曲问题，在该模拟中，细致平衡被明确打破——从而驱使球壳处于活跃状态，脱离热平衡。与处于热平衡状态的球壳相比，这样的球壳通常具有更高（活跃）或更低（平静）的涨落，这取决于细致平衡是如何被打破的。我们表明，对于同一组弹性参数，在热平衡状态下未屈曲的球壳如果变为活跃状态就可能发生屈曲。类似地，在热平衡状态下屈曲的球壳如果变为平静状态就可能不再屈曲。基于这一结果，我们认为有可能通过实验设计出其屈曲可通过光学手段控制的微观弹性球壳。
