Full
Outline
Yb film sensor was fabricated by vacuum evaporation technique, and its performance has been studied under the longitudinal quasi-static loading in the range of 1 GPa. The comparison of two group Yb film sensors, one is unheated treatment and the other is heat treatment at 300 ℃ for 1 h in vacuum, indicates that the piezoresistance coefficient of the heated film is larger than not only the unheated, but also the Yb foils. With the analyses of SEM and electric performance, it is discovered that heat treatment helps to grow crystal, decrease the film resistivity and improve the piezoresistance coefficient. XRD analysis reveals that pressure may promote the growth of Yb crystals. Also, after treatment by pressure (≈1 GPa) Yb film sensors are easy to fabricate and have stable performance, which may have extensive usage in industry.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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