Weeks SEM Users Meeting

Weeks SEM Users MeetingOctober 22, 2010

TopicsIntroductionsOperationBSE detector broken/replacedNew sample height procedureFilaments and heating issuesUndersaturate filament, butUse bias >0 to tweak tip for nice filament imageUse lower current for better images (up to point) But then for BSE, use higher Gain Setting (4 vs 3)Tip: Measurement toolCaution: Reversed mouse modeInnovation award: beer cap sample holderSEM Research User Report: NorikoQuestions for Hitachi Engineer Don GramerSuggestions for future meetings

New Sample Height Procedure

Filament Lifetime 2006-2010

5/1/2007 235 hrsNormal: long life and then someone overheated and it failed explainable

Not Normal Behavior!8/28/2010 40.1 hrs!

06/07/2010 42 hrsWire is ~100 micron diameter before useGetting weird thinning at tip. And very weird thinning on legs!

Use low filamentTweak gun biasUse not too high, not too low probe current (30? 40?)Now can use vy short stage WDFor low current, bump up BSE Gain to 4

Measurement Tool

But how to (1) remove measurement & (2) turn off green box??

Recently some users found that the Mouse mode movement tool took them the opposite direction.Should move the left point to the rightbut it went the opposite way.

Please Do NOT play with this.NO

If Mouse Mode NOT set for stage, set it HERE

Use only vacuum-appropriate sticky substrates to hold material while the epoxy is settinguse only correct epoxyNo problem with the specimen holders..but.

SEM Research User Report