▶ Watch On-Demand | 2 Hr 7 Minutes

On-Demand Session: New Machine-learning-driven Opportunities for AFM Data Acquisition and Analysis

Gain new insight into the use of machine learning and AI in AFM-based research
Watch Now | 25 Minutes

AI Guided Measurement of Live Cells Using AFM

Presented by Juan Ren, Ph.d., Associate Professor, Department of Mechanical Engineering, Iowa State University (May 4, 2023)

       PRESENTATION HIGHLIGHTS:

  • [00:00:40] Using AFM to measure cell shape as biomarkers of biochemical response
  • [00:04:11] Advantages of using AI-guided AFM for live cell research
  • [00:04:55] Generating phase-contrast images
  • [00:06:22] Detecting cell shape
  • [00:09:41] Training the neural network with transfer learning]
  • [00:10:45] Example cell shape detection results
  • [00:13:46] Navigating the cantilever tip to the location of the shape
  • [00:18:10] Performing EFM imaging
  • [00:23:30] Conclusions
Watch Now | 25 Minutes

Machine Learning to Classify, Predict Structure-Property Relationships, and Defect Artifacts in AFM Images

Presented by Dalia Yablon, Ph.D. , Founder, SurfaceChar LLC (May 4, 2023)

PRESENTATION HIGHLIGHTS:

[00:00:40] Part 1: Using machine learning to classify and predict structural property relationships from AFM images

  • [00:04:20] Data collection and pre-processing
  • [00:09:17] Classify AFM images of ICPs
  • [00:10:59] Compare phase data & PFQNM Data
  • [00:12:10] Structure property predictions
  • [00:15:55] Part 1 summary

[00:17:21] Part 2: Artifact detection research

  • [00:17:53] Experimental overview
  • [00:19:56] Machine learning approach
  • [00:21:07] Structural similarity approach
  • [00:23:39] Part 2 summary

 

Watch Now | 30 Minutes

TopoStats: An Open, Automated Analysis Pipeline for AFM Image Processing

Presented by Alice Pyne, Ph.d., Senior Lecturer and UKRI Future Leaders Fellow, University of Sheffield (May 4, 2023)

       PRESENTATION HIGHLIGHTS:

  • [00:00:11] Sub-molecular imaging of DNA
  • [00:00:44] Development & capabilities of novel AFM probes for imaging the DNA double-helix
  • [00:05:05] How can we quantify information from AFM?
  • [00:09:36] Introduction to TopoStats: automated quantitative AFM analysis
  • [00:14:09] Training TopoStats for unsupervised learning for molecule identification
  • [00:17:23] Using TopoStats to study the effect of spercoiling on DNA structure
  • [00:20:34] Using TopoStats for quantitative molecular analysis
  • [00:24:27] Results of using TopoStats to study the effects of supercoiling on DNA structure
  • [00:26:39] The future of TopoStats: Base-pair resolution analysis of the effect of supercoiling on DNA structure and flexibility
Watch Now | 19 Minutes

Automating AFM data acquisition and analysis with the Dimension Icon and FastScan

Presented by Bede Pittenger, Ph.d., Sr. Staff Development Scientist, Bruker Nano Surfaces (May 4, 2023)

       PRESENTATION HIGHLIGHTS:

  • [00:00:16] Why and how to use machine learning with AFM

Collect and process data for machine learning with Bruker technology

  • [00:05:06] AutoMET Automation Software
  • [00:06:50] User-friendly API in the NanoScope
  • [00:10:07] What is "good data" for machine learning with AFM?
  • [00:11:07] Collecting "good data" with Tapping Mode and PeakForce Tapping
  • [00:12:23] Example: Using AutoMET to investigate mechanical properties of polymers
  • [00:15:03] How to import raw nanoscope data into Python
  • [00:17:59] Summary
Watch Now | 19 Minutes

Q&A

PRESENTATION HIGHLIGHTS:

Presentation 1:

  • [00:00:00] How were the cells in your phase contrast images labeled?

Presentation 2:

  • [00:04:16] Was the image curation process Human-based or automated?
  • [00:04:51] How big should the dataset be in order to build a machine-learning model
  • [00:07:05] Why does the deformation channel perform best in the CNN? How to gauge how many training sets are needed for reliable CNN performance?

Presentation 3 

  • [00:09:54] What parameters were used for clustering analysis?
  • [00:11:09] Does TopoStats work with raw Bruker data files?

Presentation 4

  • [00:12:00] In the nanoscope software, and using peakForce QNM mode, how can you get representative force-distance curves over a scan area?
  • [00:13:30] When moving the stage using Python, what is the unit of movement? and will new versions of Python be supported in the nanoScope Python toolbox?

General Questions

  • [00:15:20] How much work it is to get machine learning up and going, do you need to be an expert to do it?