It is an object of the present invention to provide a solution to problems associated with the use of microarray technology for the analysis DNA. A control element is in electrical communication with the movable display device and the solar power light. 2% to about 6% % by weight of silica abrasive having an average particle size of about 50 nm or less, and an amine in an amount sufficient to adjust the pH of the composition to between about 2. As a result, the SiSi1-yGey interface can have its structural disorder eased and can be kept definite and planar.