低加速电压条件或老扫描电镜测试分辨率设定为小探针电流时信噪比可能会差,此标准样品金颗粒尺寸30nm至500nm,更大的金颗粒图像会带来更好的对比度,便于测试金颗粒之间的间隙。选购时请说明电镜品牌和型号,以选择合适的样品托。
Low Voltage Resolution Test Specimen, Gold on Carbon 4 particle sizes range from 30nm to 500nm When operating at low accelerating voltages or using older instruments, difficulties may be experienced in imaging the standard gold on carbon resolution specimens. This may be due to inferior resolution at low voltage or poor signal to noise ratio when operating at high scanning rates with small spot sizes. The larger gold islands give high contrast while retaining small gaps for resolution measurement. This makes the specimen easier to use at non-optimal operating conditions. 6mm dia. x 2mm.