ESCA (Electron Spectroscopy for Chemical Analysis)
E681655
X-ray photoelectron spectroscopy technique
electron spectroscopy method
surface-sensitive analytical technique
ESCA (Electron Spectroscopy for Chemical Analysis) is a surface-sensitive analytical technique, also known as X-ray photoelectron spectroscopy (XPS), used to determine the elemental composition and chemical states of materials.
All labels observed (1)
| Label | Occurrences |
|---|---|
| ESCA (Electron Spectroscopy for Chemical Analysis) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7685715 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: ESCA (Electron Spectroscopy for Chemical Analysis) Context triple: [Kai Siegbahn, developed, ESCA (Electron Spectroscopy for Chemical Analysis)]
-
A.
Laser Induced Breakdown Spectroscope
Laser Induced Breakdown Spectroscope is a scientific instrument that analyzes the elemental composition of materials by focusing a high-energy laser to create a plasma and studying the emitted light spectrum.
-
B.
XRF
XRF is the IATA airport-style code assigned to Liverpool Lime Street railway station in Liverpool, England.
-
C.
ARPES
ARPES (Angle-Resolved Photoemission Spectroscopy) is an experimental technique used in condensed matter physics to map the electronic band structure and momentum-resolved properties of materials.
-
D.
Mössbauer Spectrometer
The Mössbauer Spectrometer is a highly sensitive instrument that uses gamma-ray resonance absorption to determine the mineralogical and chemical composition of iron-bearing rocks and soils.
-
E.
SARA (Sub-keV Atom Reflecting Analyzer)
SARA (Sub-keV Atom Reflecting Analyzer) is a scientific instrument designed to study low-energy neutral atoms reflected from planetary surfaces, particularly to investigate solar wind interactions with the Moon.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: ESCA (Electron Spectroscopy for Chemical Analysis) Target entity description: ESCA (Electron Spectroscopy for Chemical Analysis) is a surface-sensitive analytical technique, also known as X-ray photoelectron spectroscopy (XPS), used to determine the elemental composition and chemical states of materials.
-
A.
Laser Induced Breakdown Spectroscope
Laser Induced Breakdown Spectroscope is a scientific instrument that analyzes the elemental composition of materials by focusing a high-energy laser to create a plasma and studying the emitted light spectrum.
-
B.
XRF
XRF is the IATA airport-style code assigned to Liverpool Lime Street railway station in Liverpool, England.
-
C.
ARPES
ARPES (Angle-Resolved Photoemission Spectroscopy) is an experimental technique used in condensed matter physics to map the electronic band structure and momentum-resolved properties of materials.
-
D.
Mössbauer Spectrometer
The Mössbauer Spectrometer is a highly sensitive instrument that uses gamma-ray resonance absorption to determine the mineralogical and chemical composition of iron-bearing rocks and soils.
-
E.
SARA (Sub-keV Atom Reflecting Analyzer)
SARA (Sub-keV Atom Reflecting Analyzer) is a scientific instrument designed to study low-energy neutral atoms reflected from planetary surfaces, particularly to investigate solar wind interactions with the Moon.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
X-ray photoelectron spectroscopy technique
ⓘ
electron spectroscopy method ⓘ surface-sensitive analytical technique ⓘ |
| abbreviationFor | Electron Spectroscopy for Chemical Analysis NERFINISHED ⓘ |
| alsoKnownAs | X-ray photoelectron spectroscopy ⓘ |
| analysisMode |
high-resolution core-level scan
ⓘ
survey scan ⓘ |
| basedOnPhysicalEffect | photoelectric effect ⓘ |
| canDetect | all elements except hydrogen and helium ⓘ |
| canDistinguish | different chemical states of the same element ⓘ |
| canMap | lateral distribution of elements on surfaces ⓘ |
| canPerform | depth profiling with ion sputtering ⓘ |
| canQuantify | atomic concentration of elements ⓘ |
| commonlyUsedFor |
adhesion and interface studies
ⓘ
catalyst surface analysis ⓘ characterization of thin films and coatings ⓘ corrosion studies ⓘ polymer surface characterization ⓘ semiconductor device characterization ⓘ surface analysis of solids ⓘ |
| dataOutput |
intensity versus binding energy plot
ⓘ
photoelectron spectrum ⓘ |
| detects | photoelectrons emitted from a sample ⓘ |
| developedBy | Kai Siegbahn NERFINISHED ⓘ |
| developmentPeriod | 1960s ⓘ |
| energyScale | binding energy in electronvolts ⓘ |
| excitationSource |
Al Kα X-rays
ⓘ
Mg Kα X-rays ⓘ monochromatic X-ray source ⓘ |
| fullName | Electron Spectroscopy for Chemical Analysis NERFINISHED ⓘ |
| isSurfaceSensitive | true ⓘ |
| limitation |
limited sensitivity to light elements like hydrogen
ⓘ
requires vacuum-compatible samples ⓘ |
| measures |
binding energies of core-level electrons
ⓘ
chemical states of elements ⓘ elemental composition of material surfaces ⓘ |
| oftenCalibratedUsing | C 1s peak of adventitious carbon ⓘ |
| providesInformationOn |
chemical bonding environment
ⓘ
oxidation states ⓘ surface contamination ⓘ thin film composition ⓘ |
| relatedTechnique |
Auger electron spectroscopy
NERFINISHED
ⓘ
secondary ion mass spectrometry ⓘ ultraviolet photoelectron spectroscopy ⓘ |
| requires | ultra-high vacuum conditions ⓘ |
| requiresCalibrationWith | reference binding energies ⓘ |
| spatialResolution | typically tens of micrometers ⓘ |
| typicalAnalysisDepth | 1–10 nanometers ⓘ |
| typicalPressureRange | 10^-9 to 10^-7 mbar ⓘ |
| usesRadiationType | X-rays ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: ESCA (Electron Spectroscopy for Chemical Analysis) Description of subject: ESCA (Electron Spectroscopy for Chemical Analysis) is a surface-sensitive analytical technique, also known as X-ray photoelectron spectroscopy (XPS), used to determine the elemental composition and chemical states of materials.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.