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Quartz has been attracted attention as a nonlinear optical material without spontaneous polarization. Supposing that twinning of quartz crystal could be achieved effectively rather by impressing bending stress, we studied on making a periodically inverted structure to generate VUV lights by quasi-phase matching. We fabricated experimentally the inverted structure locally by impressing the stress for the AT-cut quartz substrate that was heated. Moreover, the stress distribution was calculated when the bending stress was impressed to the substrate with the rectangle structure, and then the condition for the polarization inversion was also calculated.