Ray S, Behari J
Biomater Med Devices Artif Organs. 1986;14(3-4):153-65. doi: 10.3109/10731198609117540.
Dielectric permittivity and conductivity of bone in different physiological conditions and collagen, a major component of bone are measured in the frequency range 400-1300 MHz using a Network analyzer. The dielectric dispersion observed in each cases are explained in terms of the relaxation of 'bound water' in this frequency range. The relaxation frequency as well as distribution parameter are computed in each case, under certain simplifying conditions, hydration as well as static dielectric permittivity of bound water attached with bone in different physiological conditions and collagen are also calculated. The effect of ultraviolet light irradiation on the dielectric properties of bone in this frequency range is also examined. The change in dielectric properties due to radiation is attributed to the breakage of hydrogen bonds in the ring structure. A consistent physical model in line with other data is presented.
使用网络分析仪在400 - 1300兆赫的频率范围内测量不同生理条件下骨骼以及骨骼的主要成分胶原蛋白的介电常数和电导率。在每种情况下观察到的介电色散是根据该频率范围内“结合水”的弛豫来解释的。在某些简化条件下，计算每种情况下的弛豫频率以及分布参数，还计算了不同生理条件下附着在骨骼和胶原蛋白上的结合水的水合作用以及静态介电常数。还研究了紫外线照射对该频率范围内骨骼介电特性的影响。辐射引起的介电特性变化归因于环状结构中氢键的断裂。提出了一个与其他数据一致的物理模型。
