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ALSDA Assay Metadata, Image, Outcome Measure Configuration for AFMMechanical Testing & Topography (Atomic Force Microscopy)RS started 8/2/23; XP edited 06/24 (with 2 PI assessments) ; XP edited with TA's assessments 06/24
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File Folders will contain: Study Metadata File, .log file, Force-displacement images, raw mechanics tabular data, processed tabular data, phase imageMeasurement: Mechanical Tests
Ontology: http://purl.bioontology.org/ontology/MESH/D000083522
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Supporting Literature:

Necas and Klapetek 2012; Schulze et al, 2021; Wu et al 2018, Schillers et al 2017, Vahabi et al 2013, Cappella and Dietler 1999, Joshi et al 2022, Verbelen et al 2006, Giessibl 2003, Walters et al 1996, Akhatova et al 2022, Asgari et al 2022, Payam and Passian 2023, Mull and Kreplak 2022
Technology: Microscopy, Atomic Force
Ontology: http://purl.bioontology.org/ontology/MESH/D018625
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Instructions: Adapt behavior template to the assay. Use the Configuration Headings to organize information according to the description of the heading in the Notes. Feel free to add, delete, or modify rows. If your parameter can be described using existing wording, preserve the existing wording. If there are similar parameters that need to be distinguished, try to use the parameter wording and add modifying words. Use the MINIMUM metadata parameters necessary to make the data REUSABLE, rather than trying to exactly REPLICATE all conditions under which the assay was performed. Parameters are to be used for screening data sets to determine if they match the conditions a user sets for comparison to other data sets, or for meta-analysis of the effect of a parameter on the dependent variable data.
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ParameterExample ValueData TypeUnitNotes
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ALSDA Assay Metadata Configuration for AFM
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AFM Hardware Settings and Qualities
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AFM Model (manufacturer, model number)
e.g. Veeco Metrology Group (currently Broker Nanosurfaces, Nanoscope IV Multimode AFM, NanoWizard V for bio work in lfuid
String
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AFM Probe Usede.g. qp-BioAC, SNL-10, MLCT-Bio, SAA-SPH-1UMString
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Does the probe have a tip or is it tipless?
e.g. Tip or Tipless (with 5 um diameter silica sphere), or cell as probe on the tip
String
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AFM Tip or Sphere material (and shape?)e.g. Silicon or silicon nitride, reflective goldString
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AFM Cantilever shapee.g. Parabaloid, spherical, triangularString
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Spring Constante.g. 0.01 Nm^-1Double
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AFM Tip Radiuse.g. 10 nmDouble
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Cantilever Lengthe.g. 100 nmDouble
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AFM Operation Settings
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Mode of Operation
e.g. Lateral force microscopy, Nanoindentation mode, Dynamic force\intermittement contact (tapping mode?), Force modulation, Phase/Height imaging, Force spectroscopy, force volume mapping, or other
String
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Imaging Temperaturee.g. 20 degrees CelciusDoubleCelsius
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Minimum Applied Forcee.g. 500 nNDoublenN
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Spring Constante.g. 2.7 N/mDoubleN/m
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Scanning Rate (Frequency)e.g. 0.8-0.9 kHzDoublekHz
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Scanning Forcee.g. 1-2 nNDoublenN
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Indentation Ratese.g. 0.1, 0.5, 1, 2, and 5 μm s^-1String
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Test Attributes (Tension, compression, 3pt, 4pt)e.g. 3ptStringMicroindentation AFM should only be used in compression loading
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Control Mode (Load or Displacement Control)e.g. Load ControlString
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Is this test monotonic or fatiguee.g. monotonicString
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Displacement Rate (Rate of applied load or displacement)
e.g. 0.01 mm/sDoubleum/s
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Scans of Samplee.g. 100 umDouble
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AFM Sample Settings and Qualities
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Techniquee.g. AM-AFM, EFM, KFM, MRM, Biomodal AFM, FMM, AFAM, UAFMString
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Samplee.g. Collagen, live cells, live tissueString
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Approximate Material Dimensionse.g. 25 sq nmDouble
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Substrate
e.g. mica, glass, silicon oxide, Isopore polycarbonate membranes, elastic silicon membrane or petri dish coated with matrix proteins, petri dish, etc
String
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Immobilization Method
e.g. mechanical trapping, adherent cells to matrix, mechanical immobilization
String
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Sample Medium
e.g. Aqeous , In Air, or other (5uL of solution), cell culture media,
String
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Sample Surface Areae.g. 400 × 400 nm2Double
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Section Thickness
e.g. 20 nm, cell size 10-100 micron, tissue few mm length
Double
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AFM Data Aquisition
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Image Takene.g. Height, Deflection, and or PhaseString
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Amount of Images Takene.g. 50Integer
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Image Resolutione.g. 1024 x 1024pxStringpx
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Scan Regione.g. 50 um x 50 umString
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Alignment or Location along samplee.g. corners and centerString
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Image Processing Softwaree.g. Nanoscope Analysis v3.0, JPK Data Processing Software, Gwyddion, FitykString
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Force curvesstring of numbers - deflection vs indentationStringobtained from force spectroscopy measurements (approach curve used for stiffness measuments, retraction for adhesion measurements)
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Outcome/Dependent Variable Measures for AFM - Standardly Used Nomenclature & Units
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Adhesion (nN)
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Elastic Modulus (KPa)
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DMT Modulus (MPa)
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Deformation or Indentation Depth (nm)
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Elastic_modulus_E_Newtons_per_millimeter_squared
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Toughness_Newtons_per_millimeter_squared
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Max_Stress_s_Newtons_per_millimeter_squared
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Fatigue Strength
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Mechanical Properties
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Stiffness_N_per_mm_Newtons_per_millimeter
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Work_to_fracture_Nmm_Newtons_times_millimeters
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Post-yield_displacement_millimeters
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Maximum_Load_N_Newtons
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