This readme file was generated on 2024-11-21 by Io Saito ------------------- GENERAL INFORMATION ------------------- Title of Dataset: Data from Pushing AFM to the Boundaries — Interphase Mechanical Property Measurements Near a Rigid Body Author Contact Information Principal Investigator: L. Catherine Brinson Institution: Duke University Email: cate.brinson@duke.edu ORCID: https://orcid.org/0000-0003-2551-1563 Co-Investigator: Io Saito Institution: Duke University Co-Investigator: Richard Sheridan Institution: Duke University Co-Investigator: Stefan Zauscher Institution: Duke University *Date of data collection: 20240203-20240627 *Geographic location of data collection : Durham, NC, United States *Funding and grant numbers : NSF-CMMI 2040670 -------------------- DATA & FILE OVERVIEW -------------------- This repository contains the data supporting the paper mentioned above. The files and directories are organized to facilitate easy access to raw and processed data, along with metadata and supporting information. * README.txt This file provides an overview of the repository contents and file organization. * All Data.tar Contains 135 directories and 2142 files of all AFM mechanical measurement data and fitting results. Subdirectories are structured as: {Date}_{Concentration}_{MeasuringTemperature}_{ROI}_{Replicate} Each subdirectory includes: * Raw AFM data: Stored in .ARDF files. * 2D fitting results: Stored as 12 .npy files. * 1D modulus-force profiles: Stored as dist_vs_mod.csv. * All Data.csv A CSV file containing metadata for all measurements. Keys follow the format: {Date}_{Concentration}_{MeasuringTemperature}_{ROI}_{Replicate} * Thickness.tar Contains 24 files in total used to measure interphase thickness and sigmoid.ipynb that can be used to calculate interphse thickness from the data. Subdirectories are organized as: {Concentration}wt% Each subdirectory includes: * Raw phase map data: Stored as .ibw files. * Images: Available in .jpg and .bmp formats. * Tipcheck.ibw: The AFM topography image used to measure the tip radius after phase map analysis. * sigmoid.ipynb : The python script used to analyse the phase map * Tip radius.tar Contains 38 topography maps used for tip radius measurements after mechanical analysis. Subdirectories are organized as: {Concentration}/{Probe} * Tipinfo.csv: A CSV file summarizing the spring constant, Q factor, frequency, and calculated tip radius associated with each mechanical measurement. * Aggregated.tar Contains 45 .csv files of modulus_distance profiles after aggregation of different replicates. Files are named: {Concentration}wt_{real_thickness}nm_{Probe}_{Forcesetpoint}nN.csv * Fitting result.csv Contains all fitting parameter of E/E_FF - E_MC vs lambda/a_FF to the sigmoid function -------------------------- METHODOLOGICAL INFORMATION -------------------------- Description of methods used for collection/generation of data: AFM *Software- or Instrument-specific information needed to interpret the data, including software version numbers, packages or other dependencies: The .ARDF files are compatible to AR 18.34.47. The fitting of force curve are done by Magic-AFM(https://github.com/richardsheridan/magic-afm). The modulus-distance profiles for each force setpoint, probe, and interphase thickness presented in this study are derived from the data contained in Aggregated.tar. The estimation of interphase thickness using sigmoid fitting of modulus - distance profiles is based on the data provided in Fitting result.csv. -------------------------- DATA-SPECIFIC INFORMATION -------------------------- All Data.csv Variable/field list Filename: Name of the file Concentration: The concentration of the polymer solution used for the sample in wt% unit Probe: Type of the probe used for the AFM mechanical measurement Temp: Temperature setting at the mechanical measurement in ℃ Tip_Radius_mean: The mean radius of the AFM tip measured by blind tip reconstruction method [nm] Tip_Radius_std: The standard deviation of the AFM tip radius measured by blind tip reconstruction method (Unused) [nm] ROI: Scan size [nm] InterphaseThickness: Approximate interphase thickness for identification [nm] Force setpoint: Setpoint of the applied force [nN] Farfieldcontactradius(Schwarz): Contact radius between sample and tip at the M layer [nm] Point: Points per line in scanning Z Rate: Scanning frequency in Fast Force mapping [Hz] Relativeinterphase thickness: Unused Depth: Indentation Depth calculated from force curve [nm] calc_Depth: Indentation Depth calculated by Johnson-Kendall- Roberts(JKR) model [nm] a_hat: Far field contact radius normalized by tip radius [nm] d_hat: Indentation depth normalized by tip radius [nm] thermal Q: Quality factor of the AFM tip f: Resonant frequency of the AFM tip [Hz] k: spring constant of AFM tip [N/m] Fitting result.csv Variable/field list path: Unused Aff: Far field contact radius [nm] Sigmoid_fit: fitting parameter of sigmoid function L_int/aff: Relative interphase thickness normalized by far field contact radius L_pred/aff: Estimated interphase thickness vs far field contact radius, calculated from sigmoid fitting lower: lower 5% reliability interval of Estimated interphase thickness upper: upper 5% reliability interval of Estimated interphase thickness fit_score: Y-intercept of fitted sigmoid function RDS: Reduced distance score err: Error of interphase thickness estimation, normalized by measured interphase thickness E_lower: Lower 5% reliability interval of Y-intercept of fitted sigmoid function E_upper: Upper 5% reliability interval of Y-intercept of fitted sigmoid function Force: Force setpoint [nN] Probe: Type of the probe used for the AFM mechanical measurement Int: Approximate interphase thickness for identification [nm] Aggregated.tar Variable/field list "": index column "Unnamed: 0": Unused zeros column distance: bin average distance from the interface [nm] normalized_distance: bin average distance normalized by far field contact radius modulus: bin average Young's modulus [GPa] normalized_modulus: bin average Young's modulus normalized by far field modulus ContactRadius: bin average Contact radius between sample and tip at the current distance [nm] A_cap: bin average The distance where tip and substrate directory contact (x_direct in the paper) [nm] distance_std: bin standard deviation of distance from the interface normalized_distance_std: bin standard deviation of distance normalized by far field contact radius modulus_std: bin standard deviation of Young's modulus normalized_modulus_std: bin standard deviation of Young's modulus normalized by far field modulus ContactRadius_std: bin standard deviation of Contact radius between sample and tip at the current distance A_cap_std: bin standard deviation of The distance where tip and substrate directory contact (x_direct in the paper) (bin size is 0.1 normalized distance unit) All Data.tar Variable/field list distance:absolute distance from the interface [nm] normalized_distance: distance normalized by far field contact radius modulus:absolute Young's modulus [GPa] normalized_modulus: Young's modulus normalized by far field modulus SSE: Unused x_int_Aff: Unused ContactRadius:Contact radius between sample and tip at the M layer [nm] A_cap:The distance where tip and substrate directory contact (x_direct in the paper) [nm] Forcesetpoint:Setpoint of the applied force [nN] RelativeInterphaseThickness:Unused Filename:Unused Value/attribute list Include units of measure, codes or symbols used Missing data treatments (null, -99, na, etc.) ------------------------- USE and ACCESS INFORMATION -------------------------- Data License: Creative Commons CC0 1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/ Other Rights Information: To cite the data: Saito, I. Sheridan, R. J., Zauscher, S., Brinson, C. (2025). Data from: Pushing AFM to the boundaries — interphase mechanical property measurements near a rigid body. Duke Research Data Repository. https://doi.org/10.7924/r4d79jv0f @article{doi:10.1021/acs.macromol.4c01993}, author = {Saito, Io and Sheridan, Richard J. and Zauscher, Stefan and Brinson, L. Catherine}, title = {Pushing AFM to the Boundaries: Interphase Mechanical Property Measurements near a Rigid Body}, journal = {Macromolecules},