Peakforce Photothermal-Based Detection of IR Nanoabsorption

An apparatus and method of performing photothermal chemical nanoidentification of a sample includes positioning a tip of a probe at a region of interest of the sample, with the tip-sample separation being less than about 10 nm. Then, IR electromagnetic energy having a selected frequency, ω, is direc...

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Bibliographische Detailangaben
Hauptverfasser:	Su, Chanmin, Andreev, Gregory O
Format:	Patent
Sprache:	eng
Schlagworte:	APPLICATIONS OF SCANNING-PROBE TECHNIQUES, e.g. SCANNING PROBEMICROSCOPY [SPM] INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MANUFACTURE OR TREATMENT OF NANOSTRUCTURES MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES MEASURING NANOTECHNOLOGY PERFORMING OPERATIONS PHYSICS SCANNING-PROBE TECHNIQUES OR APPARATUS SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES TESTING TRANSPORTING
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Beschreibung
Zusammenfassung:	An apparatus and method of performing photothermal chemical nanoidentification of a sample includes positioning a tip of a probe at a region of interest of the sample, with the tip-sample separation being less than about 10 nm. Then, IR electromagnetic energy having a selected frequency, ω, is directed towards the tip. Using PFT mode AFM operation, absorption of the energy at the region of interest is identified. Calorimetry may also be performed with the photothermal PFT system.