ANALYSIS OF PHOTOGRAPHIC-EMULSIONS FOR ELECTRON-MICROSCOPY OF TWO-DIMENSIONAL CRYSTALLINE SPECIMENS
ANALYSIS OF PHOTOGRAPHIC-EMULSIONS FOR ELECTRON-MICROSCOPY OF TWO-DIMENSIONAL CRYSTALLINE SPECIMENS
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DOI：
10.1016/0304-3991(82)90262-5
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发表时间：
1982-01-01
期刊：
影响因子：
2.2
通讯作者：
GRANO, DA
中科院分区：
文献类型：
--
作者：
DOWNING, KH;GRANO, DA
记录在照相介质上的图像受到几个参数的影响，这些参数是所使用的特定乳液的特征。通过了解速度、调制传递函数以及乳液噪声功率谱的曝光依赖性，可以预测乳液对二维晶体样本图像质量的影响。针对 EM 中使用的几种照相乳剂测量了这些参数，并将结果用于预测图像傅里叶变换中的信噪比。没有任何一种乳液能够在所有条件下提供最佳效果。数据以考虑乳液和记录条件之间相互作用的形式呈现，从而优化记录过程。
Images recorded on photographic media are affected by several parameters which are characteristic of the particular emulsion used. The influence of the emulsion on the quality of the image of a 2-dimensional crystalline specimen can be predicted with a knowledge of the speed, the modulation transfer function, and the exposure dependence of the noise power spectrum of the emulsion. These parameters were measured for several photographic emulsions used in EM, and the results were used to predict signal-to-noise ratios in the Fourier transforms of images. No single emulsion provides the best results under all conditions. The data are presented in a form which accounts for the interplay between the emulsion and the recording conditions, allowing optimization of the recording process.