Self-selection in size and structure in argon clusters formed on amorphous carbon

Neon in carbon nanopores: wetting, growth mechanisms, and cluster structures

“…Thus, in line with our previous observations [7][8][9], the discrete character of micro-and mesopores presumably induces the found self-selection in cluster sizes. The distribution functions exhibit for all objects under study absolute prevalence of MTPs, i.e., clusters with the five-fold symmetry.…”

“…The highly reproducible discrete distribution functions characterize our method as a good application to the pore medium description. Finally we should conclude that the method suggested in this and our previous similar works [7][8][9] can also be used in the analysis of a wide group of objects, which obey the growth mechanisms typical of confined geometry.…”

“…The so-called schwartzites [5,6] formed by negatively curved graphitic sheets are permitted by interconnected channels and can be considered as a porous matrix, which may be filled with different substances under certain conditions. Clusters grown inside pores obey the growth mechanisms typical of confined geometry and demonstrate the absolute prevalence of structures with the five-fold symmetry [7][8][9]. Such structures were earlier observed in essentially different experiments [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] with the only one common feature, i.e., the limited number of interacting atoms during growth.…”

“…Diffractograms ( Fig. 1) were analyzed using simulations, which were made in a similar way as described pre- viously [7][8][9], i.e., on the basis of the assumption of a wide variety of possible structures and sizes of clusters (Fig. 2).…”

“…The superposition of diffracted intensities I calc from different clusters k with their relative weights w k , i.e., I calc = Sw k I calc,k , was compared with the experimental intensities I exp using the reliability factor R in the form R = = S|I exp -I calc |/S(I exp + I calc ), where the summation was taken over approximately 300-400 points along the experimental and calculated diffraction patterns with the equidistant step of~0.015 C -1 in s = 4p sin(q)/l (q is the diffraction angle and l is the wavelength of electrons). The values w k were involved in the total analysis as nearly independent variables [7][8][9]. The total Sw k of all relative weights is equal to 1.…”