Autonomic restoration of electrical conductivity using polymer-stabilized carbon nanotube and graphene microcapsules

We report the use of microcapsules containing suspensions of polymer-stabilized carbon nanotubes and/or graphene flakes for the autonomic restoration of conductivity in fractured gold lines. Multilayered samples were prepared in which microcapsules were embedded in layers of epoxy above and below a glass slide patterned with gold lines. Upon sample fracture, conductivity was lost as a crack formed in the gold line. Simultaneous release of carbon nanotubes and/or graphene suspensions from capsule cores restored conductivity in minutes. We suggest a healing mechanism in which the released carbon nanomaterials bridge gaps in the gold lines.

[1]  G. Yushin,et al.  Towards Ultrathick Battery Electrodes: Aligned Carbon Nanotube – Enabled Architecture , 2012, Advanced materials.

[2]  Mark C. Hersam,et al.  Sorting carbon nanotubes by electronic structure using density differentiation , 2006, Nature nanotechnology.

[3]  Anna C. Balazs,et al.  Entropy-driven segregation of nanoparticles to cracks in multilayered composite polymer structures , 2006 .

[4]  Seiji Akita,et al.  Orientation of Carbon Nanotubes Using Electrophoresis , 1996 .

[5]  Riichiro Saito,et al.  Raman spectroscopy of carbon nanotubes , 2005 .

[6]  M. Doeff,et al.  TEM Study of Fracturing in Spherical and Plate-like LiFePO4 Particles , 2008 .

[7]  S. Barman,et al.  Lyotropic liquid-crystalline solutions of high-concentration dispersions of single-walled carbon nanotubes with conjugated polymers. , 2009, Small.

[8]  Nancy R. Sottos,et al.  Restoration of Conductivity with TTF‐TCNQ Charge‐Transfer Salts , 2010 .

[9]  M. Wohlfahrt‐Mehrens,et al.  Ageing mechanisms in lithium-ion batteries , 2005 .

[10]  Alexandra M. Landry,et al.  Microcapsules containing suspensions of carbon nanotubes , 2009 .

[11]  R. Krupke,et al.  A Scalable, CMOS‐Compatible Assembly of Ambipolar Semiconducting Single‐Walled Carbon Nanotube Devices , 2011, Advanced materials.

[12]  Kyle A. Williams,et al.  Towards electrically conductive, self-healing materials , 2007, Journal of The Royal Society Interface.

[13]  V. C. Moore,et al.  Band Gap Fluorescence from Individual Single-Walled Carbon Nanotubes , 2002, Science.

[14]  German V. Kolmakov,et al.  Using nanoparticle-filled microcapsules for site-specific healing of damaged Substrates: creating a "repair-and-go" system. , 2010, ACS nano.

[15]  R. Verberg,et al.  Healing substrates with mobile, particle-filled microcapsules: designing a ‘repair and go’ system , 2007, Journal of The Royal Society Interface.

[16]  Puligandla Viswanadham,et al.  Failure Modes and Mechanisms in Electronic Packages , 1997 .

[17]  Martha E. Grady,et al.  Autonomic Restoration of Electrical Conductivity , 2012, Advanced materials.

[18]  B. Blaiszik,et al.  A Self‐healing Conductive Ink , 2012, Advanced materials.

[19]  Ryne P. Raffaelle,et al.  Carbon nanotubes for lithium ion batteries , 2009 .

[20]  Amrit Narasimhan,et al.  Probing and repairing damaged surfaces with nanoparticle-containing microcapsules. , 2012, Nature nanotechnology.

[21]  K. Jonnalagadda.  Reliability of via-in-pad structures in mechanical cycling fatigue , 2002, Microelectron. Reliab..

[22]  J. Newman,et al.  A mathematical model of stress generation and fracture in lithium manganese oxide , 2006 .

[23]  John Wilkinson,et al.  Aligned single‐wall carbon nanotube polymer composites using an electric field , 2006 .