Abstract: A shadow moiré system (herein ‘system’) includes a glass grating that is disposed above a sample in an oven top and glass lid assembly of an oven such that the glass grating is vertically adjustable. Further, the system includes shadow moiré optics that is disposed above the glass grating. Furthermore, the system includes a vertical motion assembly that is disposed in an oven bottom assembly of the oven along with a sample support to vertically move the sample support and the sample disposed thereon. Additionally, the shadow moiré system includes a top heater assembly that is disposed in the oven top and glass lid assembly above the glass grating and a bottom heater that are separately controllable to generate and apply heat to the sample to observe any changes in flatness in a surface of the sample with temperature change.

Abstract: A system can use light to analyze a sample dimensionally, for example via shadow moiré analysis. The system can apply convection to heat the sample during analysis. A platform of the system can support the sample during convection-based heating. The system can include nozzles that are arranged circumferentially about the platform. The nozzles can have openings oriented towards the platform to emit heated air towards the sample, to heat the sample. Members such as fins or posts within each nozzle can diffuse or spread the emitted air.