2012
DOI: 10.1017/s1431927611012669
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Possibility of Scanning Electron Microscope Observation and Energy Dispersive X-Ray Analysis in Microscale Region of Insulating Samples Using Diluted Ionic Liquid

Abstract: AbstractThe possibility of scanning electron microscope (SEM) observation and energy dispersive X-ray (EDX) spectrometry analysis in microscale regions of insulating samples using diluted ionic liquid was investigated. It is possible to obtain clear secondary electron images of insulating samples such as a rock and mineral at 5,000 times magnification by dropping 10 μL of 1 wt% of 1-ethyl-3-methylimidazolium acetate (EMI-CH3COO) diluted with ethanol onto th… Show more

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Cited by 10 publications
(4 citation statements)
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“…At room temperature, ionic liquids are molten salts, they have high electronic conductivity, and extremely low vapor pressure [96,97]. Recently, they have been used in SEM as a substitute for metal coating [98]. An IL covering keeps the biofilm hydrated under high vacuum SEM conditions (IL resists evaporation), so the Eps is preserved, thus avoiding dehydration steps and critical point drying procedures.…”
Section: Comparing Conventional Sem and Vp-sem On S Mutans Samplesmentioning
confidence: 99%
“…At room temperature, ionic liquids are molten salts, they have high electronic conductivity, and extremely low vapor pressure [96,97]. Recently, they have been used in SEM as a substitute for metal coating [98]. An IL covering keeps the biofilm hydrated under high vacuum SEM conditions (IL resists evaporation), so the Eps is preserved, thus avoiding dehydration steps and critical point drying procedures.…”
Section: Comparing Conventional Sem and Vp-sem On S Mutans Samplesmentioning
confidence: 99%
“…Ionic liquids are, at room temperature, molten salts with high electronic conductivity and irrelevant vapor pressure [46,47]. These properties allow their use in SEM as a substitute for metal coating [48,49]. We covered biofilm samples with IL, to maintain them wet during the SEM investigation.…”
Section: Sem Protocolsmentioning
confidence: 99%
“…Its very low vapor pressure makes BMI‐BF4 a good candidate for use under high vacuum, as it does not evaporate at very low pressure. Contrary to the procedure described by Imashuku et al (), the fractured and one cross‐section specimens were completely immersed in a dilute solution of ∼0.4 mg/cm 3 of BMI‐BF4 in ethanol for 10 min in a small vial. The specimen was then removed from the vial and left to dry on a Kim Wipe towel.…”
Section: Methodsmentioning
confidence: 99%
“…In the materials science field, Imashuku et al () applied IL to dry rocks using a dilute solution of EMI‐BF4 in ethanol dropped around the blocks of different minerals to make a contact between the specimen and the carbon tape used to support the specimen. They reported reduced charging and Duane‐Hunt limit, which is a measure of charging based on the x‐ray energy spectrum, closer to the incident beam energy.…”
Section: Introductionmentioning
confidence: 99%