%Fig2_c
figure
scatter(X1,Y1,'LineWidth',2);
hold on
plot(X2,Y2,'LineWidth',2);
set(gca,'fontsize',12);
set(gca, 'TickDir', 'out')
% xlabel('Thickness [nm]');
% ylabel('Frequency [1/m/W]');
ylim([5.7 6.8])
xlim([200 400])
box on
set (gcf, 'Position', [596,546,560,270]);