ROW: Investigation of Self-Affine Surface Fractals through Adsorption Isotherms

分形形成的研究目前以理论和计算机模拟为主。提出了一项实验研究，以证明自仿射分形结构产生的条件，并制备了变分维数的表面。三个沉积参数将改变：沉积速率，衬底温度和沉积材料。分形维数的测量将采用三种实验技术：氮气（77 K）等温线、不同尺寸吸附剂的吸附和小角x射线散射。对He吸附物的超流体起始和界面摩擦进行了进一步的研究。

The investigation of fractal formation is currently dominated by theory and computer simulation. An experimental study is proposed to document those conditions under which self-affine fractal structures result, and to prepare surfaces of varying fractal dimension. Three deposition parameters will be varied: deposition rate, substrate temperature and deposition material. Three experimental techniques for measuring fractal dimension will be carried out: Nitrogen (77 K) isotherms, adsorption by adsorbates of various sizes, and small angle x-ray scattering. Future studies of the superfluid onset of He adsorbates and interfacial friction are planned.