| 查看: 4902 | 回復(fù): 31 | |||
fe77021金蟲 (小有名氣)
|
[交流]
【請教】請教掃描電鏡調(diào)焦問題 已有28人參與
|
||
SEM資料匯編 |
金蟲 (小有名氣)
|
fe77021, Yes, most of the above comments are helpful. Make sure that you have good conductivity as much as you can. If you are using conductive carbon tape to secure your sample, you can add some silver/carbon paint at the edge of the sample to provide better conductivity. You can even use the 0.5kV on Hitachi s-4800. This is the beauty of the s-4800. Not only that, you can change the beam current. Most of the time Ie=15-20mA are used. However, for your samplle, I will recommend that you can even reduce to 2-5mA to reduce the beam current/heat to avoid overheat/shift your sample. Lower down the working distance (WD) will give you better resolution. One more thing, you can change the pixels of the photo to enhance the image quality (1280 button vs 2560 button). After saying all of these, I would say the most important issues are the alignment and astigmatism control. You might think you already adjusted the stigmators correctly but they are not. After adjusting the focus, you need to go back to adjust the stigmators again, back and forth between the "focus and stigmators-x, y" a few times. If everything is correct, you will suddenly see a focused image since the stigmators are perfect. Give me your e-mail address I can provide you a brief outline of the operating procedures on s-4800. I think it will help you in the long run if you just started to learn how to use the s-4800. Good luck. |
木蟲 (正式寫手)
金蟲 (正式寫手)
鐵桿木蟲 (職業(yè)作家)

銅蟲 (正式寫手)

木蟲 (著名寫手)
|
至尊木蟲 (文壇精英)
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研]
|
2117205181 2026-03-21 | 8/400 |
|
|---|---|---|---|---|
|
[考研] 317求調(diào)劑 +12 | 申子申申 2026-03-19 | 18/900 |
|
|
[考研] 280分求調(diào)劑 一志愿085802 +4 | PUMPT 2026-03-22 | 7/350 |
|
|
[考研] 263求調(diào)劑 +4 | yqdszhdap- 2026-03-22 | 4/200 |
|
|
[考研] 298求調(diào)劑 +6 | 上岸6666@ 2026-03-20 | 6/300 |
|
|
[考研] 311求調(diào)劑 +6 | 冬十三 2026-03-18 | 6/300 |
|
|
[考研] 319求調(diào)劑 +4 | 小力氣珂珂 2026-03-20 | 4/200 |
|
|
[考研] 一志愿北京化工大學(xué)070300 學(xué)碩336求調(diào)劑 +5 | vv迷 2026-03-21 | 8/400 |
|
|
[考研] 求調(diào)劑 +5 | Zhangbod 2026-03-21 | 7/350 |
|
|
[考研] 資源與環(huán)境 調(diào)劑申請(333分) +5 | holy J 2026-03-21 | 5/250 |
|
|
[考研] 材料工程專碩 348分求調(diào)劑 +3 | 冬辭. 2026-03-17 | 5/250 |
|
|
[基金申請]
學(xué)校已經(jīng)提交到NSFC,還能修改嗎?
40+4
|
babangida 2026-03-19 | 9/450 |
|
|
[考研] 083200學(xué)碩321分一志愿暨南大學(xué)求調(diào)劑 +3 | innocenceF 2026-03-17 | 3/150 |
|
|
[考研] 265求調(diào)劑 +9 | 梁梁校校 2026-03-17 | 9/450 |
|
|
[考研] 22408 344分 求調(diào)劑 一志愿 華電計(jì)算機(jī)技術(shù) +4 | solanXXX 2026-03-20 | 4/200 |
|
|
[考研] 一志愿 西北大學(xué) ,070300化學(xué)學(xué)碩,總分287,雙非一本,求調(diào)劑。 +4 | 晨昏線與星海 2026-03-19 | 4/200 |
|
|
[考研] 材料學(xué)碩297已過四六級求調(diào)劑推薦 +11 | adaie 2026-03-19 | 11/550 |
|
|
[考研] 328求調(diào)劑,英語六級551,有科研經(jīng)歷 +4 | 生物工程調(diào)劑 2026-03-16 | 12/600 |
|
|
[考研] 085601專碩,總分342求調(diào)劑,地區(qū)不限 +5 | share_joy 2026-03-16 | 5/250 |
|
|
[考研] 收復(fù)試調(diào)劑生 +4 | 雨后秋荷 2026-03-18 | 4/200 |
|