Gradient nanocomposite printing by dip pen nanolithography

Kandemir A. Ç., Ramakrishna S. N., Erdem D., Courty D., Spolenak R.

Composites Science and Technology, vol.138, pp.186-200, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 138
  • Publication Date: 2017
  • Doi Number: 10.1016/j.compscitech.2016.11.024
  • Journal Name: Composites Science and Technology
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.186-200
  • Keywords: Dip pen nanolithography, Nanocomposite, Gradient nanocomposite, Colloidal probe microscopy, Nanoindentation, MECHANICAL-PROPERTIES, ELASTIC-MODULUS, PARTICLE-SIZE, INDENTATION, ADHESION, HARDNESS
  • TED University Affiliated: No


© 2016 Elsevier LtdMany biological systems consisting of mechanically graded composites can be used to join mechanically different materials like bone, cartilage and mussel. Synthetic routes have so far been unable to achieve both the 3-D nature and the property tuning at micrometer length scales to replicate such systems. Deliberate strengthening of the mismatched surfaces and weak regions could be beneficial for a wide range of applications such as flexible electronics with locally stiff constituents, NEMS and MEMS systems, dental prosthesis having heterogeneous particle distributions resembling to natural tooth and joining mechanically different biological materials such as bone, cartilage and mussel. Dip Pen Nanolithography (DPN) can be a strategy to achieve this goal. In this study, DPN is utilized to locally deposit graded polymer-based composite materials at the micron scale. Spatial resolutions of 3–20 μm are obtained on entire pattern profiles with 6–70 μm width and up to 2 μm height. Colloidal probe microscopy and nanoindentation are used for mechanical characterization. Results show that the hardness and modulus of the gradient nanocomposite patterns can be tuned locally by changing the concentration of the ceramic nanoparticles.