!-----------------------------------------------------------------! ! These graphs illustrate the correlation of the heights and di-! ! ameters of a set of InAs self-organized quantum-dots (QD), grown! ! over GaAs by means of Molecular Beam Epitaxy. ! ! The figure was obtained by means of Atomic Force Microscopy. ! ! The histograms was obtained from the figure by counting and ! ! measuring the height and diameter of each quantum-dot (each ! ! circle). The correlation gives rise to what is known as quantum-! ! dots families. ! ! ! ! Author: Ivan Ramos Pagnossin ! ! Data: December 2003 ! ! Project: Master thesis ! !-----------------------------------------------------------------! size 15 15 set font texcmr ! Graph at the lower left corner. amove 1.5 1.25 begin graph size 6 6 fullsize xaxis min 20 max 80 dticks 10 dsubticks 5 yaxis min 0 max 15 dticks 5 dsubticks 1 xtitle "Diameter (nm)" ytitle "Height (nm)" ! Quantum dots (QD) diameter-height correlation data. data "3um/3um-diameterXheight.dat" d1 marker fcircle msize 0.05 end graph ! Graph at the upper left corner. amove 1.5 7.25 begin graph size 6 6 fullsize xaxis min 20 max 80 dticks 10 dsubticks 5 yaxis min -1 max 12 dticks 5 dsubticks 1 xlabels off x2labels on x2title "Diameter (nm)" ytitle "QDs surface density (10^8 cm^{-2})" ! Quantum-dots (QD) diameter distribution. data "3um/3um-diameter.dat" bar d1 width 0.4 color grey10 fill grey10 end graph ! Graph at the lower right corner. amove 7.5 1.25 begin graph size 6 6 fullsize xaxis min -1 max 12 dticks 5 dsubticks 1 yaxis min 0 max 15 dticks 5 dsubticks 1 ylabels off y2labels on xtitle "QDs surface density (10^8 cm^{-2})" y2title "Height (nm)" ! Quantum-dots (QD) height distribution. data "3um/3um-height.dat" bar d1 horiz width 0.1 color grey10 fill grey10 end graph ! Atomic-force microscopy image at the upper right corner. amove 8.2 7.95 begin name img bitmap "3um/3um.png" 5 5 end name set just cc amove ptx(img.tc) pty(img.tc)+0.3 write "Atomic Force Microscopy image" amove ptx(img.bl) pty(img.bl)-0.3 aline ptx(img.br) pty(img.br)-0.3 arrow both amove ptx(img.bc) pty(img.bc)-0.3 begin box add 0.1 nobox fill white tex "3 $\mathrm{\mu m}$" end box set hei 0.45 amove 7.5 14.7 write "Self-organized InAs quantum-dots (QD) height-diameter correlation"