Research of nanostructures on graphite with application of the scanning tunnel microscope

In paper the features of use of pyrolitic graphite as a substrate for nanoobjects are described. Methods of sedimentation of nanostructures are considered, supportive applications for handling of a sample are provided. The spin-coating method allows to create homogeneous thin films on flat surfaces. Substrate with the covered material rotates with a high speed to distribute this material under the influence of centrifugal force. All liquid accumulates at edges of a substrate, and in the central region there is a thin film of substance. The the speed of rotation of a substrate is higher, the film is thinner. Rotation continues until all solvent evaporates. The method of ultrasonic handling approaches in cases if particles for a research gather in conglomerates (such as, carbon nanotubes), at the same time ultrasound interferes with collection of particles in similar conglomerates during evaporation of the solvent. The method of impact of local infrared heating allows to fix reliably particles on a substrate, for example it may be carbon nanotubes on pyrolitic graphite. The radiant energy applied in this method allows to warm the sample quickly that gives the chance to fast evaporate solvent if it is necessary. It is reasonable to apply a method of electrochemical sedimentation of particles to form the nanoparticle films with controlled thickness, and also to study the dynamics of forming such films using electrochemical STM. Use of pyrolitic graphite for studies of nanotubes is also considered. Solution with nanotubes within after ultrasonic handling is applied on a substrate of pyrolitic graphite, then there is an evaporation of a sample and fast thermal annealing in the electrical vacuum furnace. It allows to remove the rest of organic substances and water and it is reliable to fix the nanotubes on a surface. Thus, the sample research methodology is offered, results of the study which confirmed the prospects of use of the pyrolitic graphite as a substrate for a research of nanostructures are given.