超顺磁磁铁矿磁接收器磁学模型

The magnetic model of the superparamagnetic magnetite magnetoreception

摘要:

生物磁铁矿磁接收器理论模型包括单畴磁铁矿磁接收器模型和超顺磁磁铁矿磁接收器模型；蜜蜂体内存在典型的超顺磁磁铁矿颗粒，本文以蜜蜂为例，从磁学理论角度出发，定性的探讨了超顺磁磁铁矿磁接收器的磁学模型和工作机制:在外磁场作用下，每个超顺磁颗粒会受到力的作用，同时伴随着尺寸沿着一定方向的收缩和扩张，超顺磁颗粒把力以及扩张收缩作用传递给外面的生物膜及生物骨架(埋藏在神经系统中)从而产生相应的神经信号，而多个超顺磁颗粒磁接收系统的存在会放大和加强信号的产生。

Abstract:

The model of biomagnetite magnetoreceptions include the model of single-domain magnetite magnetoreception and the model of superparamagnetic magnetite magnetoreception. In honeybees, there are many typical superparamagnetic magnetites, so in this paper, the magnetic model and working mechanism of the superparamagnetic magnetite magnetoreception are discussed qualitatively from the point of view of theory of magnetism taking the example of honeybees. In the outer magnetic field, each superparamagnetic magnetite can be act on with the size extend or contract along different directions. Superparamagnetic magnetites transmit the force and change of size to the outer biomembrane and eukaryotic cytoskeleton which embedding in the nervous system, so a nerve signal can be produced. The signals can be magnified because many superparamagnetic magnetites exist.