One-Step Sub-micrometer-Scale Electrohydrodynamic Inkjet Three-Dimensional Printing Technique with Spontaneous Nanoscale Joule Heating.

A one-step sub-micrometer-scale electrohydrodynamic (EHD) inkjet three-dimensional (3D)-printing technique that is based on the drop-on-demand (DOD) operation for which an additional postsintering process is not required is proposed. Both the numerical simulation and the experimental observations proved that nanoscale Joule heating occurs at the interface between the charged silver nanoparticles (Ag-NPs) because of the high electrical contact resistance during the printing process; this is the reason why an additional postsintering process is not required. Sub-micrometer-scale 3D structures were printed with an above-35 aspect ratio via the use of the proposed printing technique; furthermore, it is evident that the designed 3D structures such as a bridge-like shape can be printed with the use of the proposed printing technique, allowing for the cost-effective fabrication of a 3D touch sensor and an ultrasensitive air flow-rate sensor. It is believed that the proposed one-step printing technique may replace the conventional 3D conductive-structure printing techniques for which a postsintering process is used because of its economic efficiency.

[1]  U. Schubert,et al.  One-step inkjet printing of conductive silver tracks on polymer substrates , 2009, Nanotechnology.

[2]  C. Greiner,et al.  SU-8: a photoresist for high-aspect-ratio and 3D submicron lithography , 2007 .

[3]  Hee‐eun Song,et al.  Electrostatic-Force-Assisted Dispensing Printing to Construct High-Aspect-Ratio of 0.79 Electrodes on a Textured Surface with Improved Adhesion and Contact Resistivity , 2015, Scientific Reports.

[4]  N. Kojic,et al.  Solvent removal during synthetic and Nephila fiber spinning. , 2004, Biomacromolecules.

[5]  Jun Yeob Song,et al.  High‐Resolution Printing of 3D Structures Using an Electrohydrodynamic Inkjet with Multiple Functional Inks , 2015, Advanced materials.

[6]  Doyoung Byun,et al.  Fabrication of terahertz metamaterial with high refractive index using high-resolution electrohydrodynamic jet printing , 2013 .

[7]  John A Rogers,et al.  Nanoscale, electrified liquid jets for high-resolution printing of charge. , 2010, Nano letters.

[8]  M. Tiwari,et al.  A novel 3D integrated platform for the high-resolution study of cell migration plasticity. , 2013, Macromolecular bioscience.

[9]  Doyoung Byun,et al.  Non-contact printing of high aspect ratio Ag electrodes for polycrystalline silicone solar cell with electrohydrodynamic jet printing , 2013 .

[10]  Katharine Smith,et al.  Controlled electrospray pulsation for deposition of femtoliter fluid droplets onto surfaces , 2007 .

[11]  C. Ahn,et al.  A tapered hollow metallic microneedle array using backside exposure of SU-8 , 2004 .

[12]  Dimos Poulikakos,et al.  Site-specific deposition of single gold nanoparticles by individual growth in electrohydrodynamically-printed attoliter droplet reactors. , 2015, Nanoscale.

[13]  Doyoung Byun,et al.  Ag dot morphologies printed using electrohydrodynamic (EHD) jet printing based on a drop-on-demand (DOD) operation , 2013 .

[14]  Doyoung Byun,et al.  Retreat behavior of a charged droplet for electrohydrodynamic inkjet printing , 2011 .

[15]  J. Rogers,et al.  Mechanisms, Capabilities, and Applications of High-Resolution Electrohydrodynamic Jet Printing. , 2015, Small.

[16]  Hongxing Xu,et al.  Highly Surface‐roughened “Flower‐like” Silver Nanoparticles for Extremely Sensitive Substrates of Surface‐enhanced Raman Scattering , 2009 .

[17]  Costas P. Grigoropoulos,et al.  Metal nanoparticle direct inkjet printing for low-temperature 3D micro metal structure fabrication , 2010 .

[18]  Harish Bhaskaran,et al.  Additive nanomanufacturing — A review , 2014 .

[19]  Ching-Ping Wong,et al.  Thermal behavior of silver nanoparticles for low-temperature interconnect applications , 2005 .

[20]  Shlomo Magdassi,et al.  Ink‐Jet Printing of Metallic Nanoparticles and Microemulsions , 2005 .

[21]  Doyoung Byun,et al.  Fabrication of nanoscale nozzle for electrohydrodynamic (EHD) inkjet head and high precision patterning by drop-on-demand operation. , 2009, Journal of nanoscience and nanotechnology.

[22]  Costas P. Grigoropoulos,et al.  3D micro-structures by piezoelectric inkjet printing of gold nanofluids , 2012 .

[23]  Hiroshi Yokoyama,et al.  Super-fine ink-jet printing: toward the minimal manufacturing system , 2005 .

[24]  Costas P. Grigoropoulos,et al.  Conductor microstructures by laser curing of printed gold nanoparticle ink , 2004 .

[25]  J. Lewis,et al.  3D Printing of Interdigitated Li‐Ion Microbattery Architectures , 2013, Advanced materials.

[26]  M. Ishikawa,et al.  On-demand droplet spotter for preparing pico- to femtoliter droplets on surfaces. , 2001, Analytical chemistry.

[27]  D. Poulikakos,et al.  Direct printing of nanostructures by electrostatic autofocussing of ink nanodroplets , 2012, Nature Communications.

[28]  Hyungdong Lee,et al.  Spontaneous self-welding of silver nanowire networks. , 2015, Physical chemistry chemical physics : PCCP.

[29]  L Mahadevan,et al.  Nanopottery: coiling of electrospun polymer nanofibers. , 2010, Nano letters.

[30]  Doyoung Byun,et al.  Drop-on-demand printing of conductive ink by electrostatic field induced inkjet head , 2008 .

[31]  U. Schubert,et al.  Localized atmospheric plasma sintering of inkjet printed silver nanoparticles , 2012 .

[32]  Jie Zhang,et al.  Fine-line conductor manufacturing using drop-on demand PZT printing technology , 2002 .

[33]  C. Grigoropoulos,et al.  Manufacturing of nanoscale thickness gold lines by laser curing of a discretely deposited nanoparticle suspension , 2004 .

[34]  G. Grüner,et al.  Electrodynamics of Solids: APPENDICES , 2002 .

[35]  Mica Grujicic,et al.  The effect of thermal contact resistance on heat management in the electronic packaging , 2005 .