Low energy ion scattering (LEIS). A practical introduction to its theory, instrumentation, and applications

Cushman, Cody V.; Brüner, Philipp; Zakel, Julia; Major, George H.; Lunt, Barry M.; Smith, Nicholas J.; Grehl, Thomas; Linford, Matthew R.

doi:10.1039/c6ay00765a

Cited by 85 publications

(59 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…27,28 The low energy does not allow ions to penetrate too deep into the surface and they mostly collide with atoms on the outermost surface. In LEIS analyses of the corroded ISG samples, sample surfaces were first cleaned by sputtering with a 0.5 keV Ar + beam before being probed by the primary ion beam.…”

Section: Compositional Analysis Of Topmost Surface With Low Energy mentioning

confidence: 99%

“…27,28 The fractured surface that has never been touched with any physical objects or chemicals could be assumed to be the most pristine surface that one can prepare. 27,28 The fractured surface that has never been touched with any physical objects or chemicals could be assumed to be the most pristine surface that one can prepare.…”

Section: Leis Analysis Of the Topmost Layer Of Pristine Isg Surfacesmentioning

confidence: 99%

“…26 It is also possible that the negative charge at the fracture surface is the driving force for the migration of alkali cations to the surface. 27,28 The area of Zr peak obtained from fittings was normalized to the area of O peak and given in Figure 2B. 30,31 Surface enrichment of Ca on ISG surface upon fracturing in vacuum was also examined.…”

Section: Leis Analysis Of the Topmost Layer Of Pristine Isg Surfacesmentioning

confidence: 99%

See 2 more Smart Citations

Dissolution of silica component of glass network at early stage of corrosion in initially silica‐saturated solution

et al. 2019

View full text Add to dashboard Cite

Corrosion of glass in silica‐saturated solution has been performed with the assumption that dissolution of silicate species from the glass network would not occur. Using surface‐sensitive analytical techniques, we report experimental evidence suggesting the dissolution of silicate network species from a model nuclear waste glass, called international simple glass (ISG), in an aqueous solution initially saturated with soluble silica species. Results from low energy ion scattering and X‐ray photoelectron spectroscopy reveal a complete depletion of mobile element species (B, Na) from the ISG surface and an enrichment of Zr on the outmost surface. In support of spectroscopic analyses, results from topographic imaging with atomic force microscopy show a stochastic dissolution of glass surface resulting in a higher surface roughness with increasing corrosion time in aqueous solution. This study shows that a true equilibrium between soluble silica species in the solution phase and silicate species in the glass network could not be warranted by performing corrosion experiments in the solution where dissolved silica species are initially equilibrated with amorphous silica in the presence of KOH. The leaching of mobile species (B, Na) could affect the saturation level of aqueous solution and induce further dissolution of the glass surface.

show abstract

Section: Compositional Analysis Of Topmost Surface With Low Energy mentioning

confidence: 99%

Section: Leis Analysis Of the Topmost Layer Of Pristine Isg Surfacesmentioning

confidence: 99%

Section: Leis Analysis Of the Topmost Layer Of Pristine Isg Surfacesmentioning

confidence: 99%

See 1 more Smart Citation

Dissolution of silica component of glass network at early stage of corrosion in initially silica‐saturated solution

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Low-energy ion scattering (LEIS) spectroscopy, also called ion scattering spectroscopy (ISS) can be used to more accurately validate the purity of the catalyst surface since it only probes the top layer of atoms on the sample surface. 42 However, because LEIS is a line-of-sight technique it can be difficult to obtain quantitative information about the relative abundance of constituent elements due to their nonequivalent coverage by adventitious adsorbates, such as ambient oxygen. Despite this, ISS is a very useful analytical technique because of its enhanced sensitivity for detecting impurities on an electrode surface.…”

Section: Iii: Impact Of Impurities On Electrocatalytic Activitymentioning

confidence: 99%

Standards and Protocols for Data Acquisition and Reporting for Studies of the Electrochemical Reduction of Carbon Dioxide

et al. 2018

View full text Add to dashboard Cite

Objective evaluation of the performance of electrocatalysts for CO 2 reduction has been complicated by a lack of standardized methods for measuring and reporting activity data. In this perspective, we advocate that standardizing these practices can aid in advancing research efforts toward the development of efficient and selective CO 2 reduction electrocatalysts. Using information taken from experimental studies, we identify variables that influence the measured performance of CO 2 reduction electrocatalysts and propose procedures to improve the accuracy and reproducibility of reported data. We recommend that catalysts be measured under conditions which do not introduce artifacts from impurities, either from the electrolyte or counter electrode, and advocate the acquisition of data measured in the absence of mass transport effects.Furthermore, measured rates of electrochemical reactions should be normalized to both the geometric electrode area as well as the electrochemically active surface area to facilitate the comparison of reported catalysts with those previously known. We demonstrate that when these factors are accounted for, the CO 2 reduction activity of Ag and Cu measured in different laboratories exhibit little difference. Adoption of the recommendations presented in this perspective would greatly facilitate the identification of superior catalysts for CO 2 reduction arising solely from changes in their composition and pretreatment.

show abstract

“…This analyzer has been incorporated into an advanced commercial LEIS equipment released in 2008 by ION-TOF GmbH. 278 The so-called high-sensitivity low-energy ion scattering (HS-LEIS), 279 under the commercial name of Qtac 100 , which requires very low ion fluency for the measurement, enables the "static" analysis with negligible damage from the probing ions, and has resulted in better detection limits for the surface elements. For instance, the detection limit for the surface coverage for lighter elements (from Li to O) is ≥ 1% and for heavier elements (from K-U) is between 500 to 10 ppm.…”

Section: High-sensitivity Leis Setupmentioning

confidence: 99%

Growth and thermal oxidation of Ru and ZrO2 thin films as oxidation protective layers

Ribera¹

View full text Add to dashboard Cite

Low energy ion scattering (LEIS). A practical introduction to its theory, instrumentation, and applications

Cited by 85 publications

References 53 publications

Dissolution of silica component of glass network at early stage of corrosion in initially silica‐saturated solution

Dissolution of silica component of glass network at early stage of corrosion in initially silica‐saturated solution

Standards and Protocols for Data Acquisition and Reporting for Studies of the Electrochemical Reduction of Carbon Dioxide

Growth and thermal oxidation of Ru and ZrO2 thin films as oxidation protective layers

Contact Info

Product

Resources

About