However, this proved not to work, due to excessive vibrations. An elegant solution to this problem was found in the form of a pair of tightly-stretched mylar films attached to aluminum rings. The sample is placed in the middle of one of the mylar films, then the other film is placed over it like a sandwich and the two rings bolted together. Van der Waals forces between the sample and the diamond are sufficient to prevent the sample from moving between the mylar sheets while the target is rotated in the goniometer. The fabrication technique described below is capable of producing stretched films whose flatness in the central 1 cm region is better than 20 μrad RMS, and whose fundamental resonance is in the vicinity of 1 kHz. | However, this proved not to work, due to excessive vibrations. An elegant solution to this problem was found in the form of a pair of tightly-stretched mylar films attached to aluminum rings. The sample is placed in the middle of one of the mylar films, then the other film is placed over it like a sandwich and the two rings bolted together. Van der Waals forces between the sample and the diamond are sufficient to prevent the sample from moving between the mylar sheets while the target is rotated in the goniometer. The fabrication technique described below is capable of producing stretched films whose flatness in the central 1 cm region is better than 20 μrad RMS, and whose fundamental resonance is in the vicinity of 1 kHz. |