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Weeks SEM Users Meeting October 22, 2010

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Weeks SEM Users Meeting. October 22, 2010. Topics. Introductions Operation BSE detector broken/replaced New sample height procedure Filaments and heating issues Undersaturate filament, but Use bias >0 to tweak tip for nice filament image Use lower current for better images (up to point) - PowerPoint PPT Presentation

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  • 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