Nanoindentation of Poly(Ethylene Oxide) Nanofibers by Atomic Force Microscope (AFM)

Research output: Contributions to collected editions/worksOtherResearch

Authors

We investigate the properties of the Polymers nanofibers for its application as sensors element. Hence, are very important the geometrical, mechanical and electrical properties of the fibers in order to determine the working range, the sensibility and the minimal detection limits of the fiber. We produce the fibers by the electrospinning methods; it is a simple and quick technique for producing fibers with nanoscale diameters from a wide range of materials. In this process, a strong electric field causes a viscous solution to form a Taylor cone, from which a thin fluid jet is formed. This fluid jet may harden by a variety of processes and become a continuous fiber, which is collected at the negative electrode as electrospun, see figure.
Here we present the first step in order to determine the geometrical and the mechanical properties of the Polyethylene oxide fibers. We have deposited PEO electrospun fibers by electrospinning over a glass plate and used the AFM nanoindentation method to calculate the Young’s modulus of the fiber, and its geometrical properties also by Atomic Force Microscope. In order to calculate the Young’ modulus we used nanoindentation based on contact mechanic model. We present the results of the calculation of the Young's modulus of the fiber and the dependence between the Young’s modulus and its diameter. From the results we have observed an exponential dependence between the Young’s modulus and the diameter.
To apply the nanoindentation model we need to know the geometry of the cantilever’s tip of the AFM. This information is not always possible to obtain from the data sheet of the AFM-cantilever and when this information is not available, we calculate the geometry of the cantilever’s tip using Confocal Laser Scanning Microscope (CLSM). With this method we can calculate the face angle of the tip, which we needed for the Hertz model. Here we present these results, the angle and the 3D shape of the tip, calculated by CLSM, see figure.
Original languageEnglish
Title of host publicationSPM on SPM 2012 : International Conference on Scanning Probe Microscopy on Soft and Polymeric Materials
Number of pages2
PublisherUniversity of Twente
Publication date23.09.2012
Pages92-93
ISBN (print)978-90-365-3440-6
Publication statusPublished - 23.09.2012
EventInternational Conference on Sanning Probe Microscopy on Soft and Polymeric Materials - SPM 2012 - Rolduc Abbey, Kerkrade, Netherlands
Duration: 23.09.201226.09.2012
https://www.chemistryviews.org/details/event/2286741/International_Conference_on_Scanning_Probe_Microscopy_on_Soft_and_Polymeric_Mate.html

Recently viewed

Publications

  1. Special Issues as Vertical Integration
  2. Inquiry-based Learning Environments to Welcome the Diversity of a Chemistry Class
  3. The influence of balanced and imbalanced resource supply on biodiversity-functioning relationship across ecosystems
  4. Digitized Evaluation of Academic Opportunities to Learn (OTLs) Concerning Linguistically Responsive Teaching (LRT)
  5. Public value performance
  6. Uncertainty, Pluralism, and the Knowledge-based Theory of the Firm
  7. Functional trait similarity of native and invasive herb species in subtropical China-Environment-specific differences are the key
  8. Beyond Urban Challenges-Virtual Reality Tools in Participatory Design Processes
  9. MICSIM: Concept, Developments, and Applications of a PC Microsimulation Model for Research and Teaching
  10. The role of gestures in a teacher-student-discourse about atoms
  11. DigiSchreib
  12. Where do the data live?
  13. Forest gaps increase true bug diversity by recruiting open land species
  14. Tree-tree interactions and crown complementarity
  15. Formulating and solving integrated order batching and routing in multi-depot AGV-assisted mixed-shelves warehouses
  16. Investigating Factors on R estorative Sleep Quality and its Relationship with Personal Work Performance - An Analysis of Diary Data
  17. Predictors of adherence to public health behaviors for fighting COVID-19 derived from longitudinal data
  18. Taking Responsibility for Others and Use of Mental Contrasting
  19. Perceptions of Resource Criticality in Times of Resource Scarcity
  20. Does problem complexity matter for environmental policy delivery?
  21. Status and future dynamics of decentralised renewable energy niche building processes in Argentina
  22. Machine Learning Analysis in the Diagnostics of the Dynamics of Ball Bearing with Different Radial Internal Clearance
  23. Patterns of International Organization
  24. Existential insecurity and deference to authority
  25. Introduction
  26. Why EU asylum standards exceed the lowest common denominator
  27. Introduction to Thinking the Problematic
  28. The use of player physical and technical skill match activity profiles to predict position in the Australian Football League draft