Superconducting Flexible Organic/Inorganic Hybrid Compound Adhesives

Superconducting pastes have been successfully developed from superconducting particles using conventional methods, thereby opening up new avenues for the application of superconducting materials. These pastes are isotropic one-component heat-curable adhesives belonging to the class of organic/inorganic hybrid compounds. In this work, superconducting pastes prepared using Nb or NbN superconducting particles are applied to solid substrates through screen printing and then heat-cured under optimized conditions to form single-phase thick films. The resistivity of the Nb and NbN films becomes zero at 7.2 and 10.5 K, respectively, indicating that both these films are superconductive at cryogenic temperatures. A large free-standing film of length approximately 130 mm is successfully developed using the NbN paste. The free-standing film is flexible and exhibits superconductivity at 11 K. These results demonstrate, for the first time, that superconductivity, flexibility, adhesion, and ink properties can be simultaneously achieved in organic/inorganic hybrid compounds.

[1]  G. Lu,et al.  Large-Area Bonding by Sintering of a Resin-Free Nanosilver Paste at Ultralow Temperature of 180 °C , 2022, IEEE Transactions on Components, Packaging and Manufacturing Technology.

[2]  Xuhai Liu,et al.  Hybrid silver pastes with synergistic effect of multi-scale silver fillers and the application in flexible circuits , 2021, Materials Research Express.

[3]  K. Yoshizawa,et al.  Comparative study of the ideal and actual adhesion interfaces of the die bonding structure using conductive adhesives , 2020, The Journal of Adhesion.

[4]  Joginder Singh Galsin.  Superconductivity , 2018, Solid State Physics.

[5]  H. Takashima,et al.  Room-temperature growth of thin films of niobium on strontium titanate (0 0 1) single-crystal substrates for superconducting joints , 2018, Applied Surface Science.

[6]  Boxin Zhao,et al.  PEDOT:PSS nano-gels for highly electrically conductive silver/epoxy composite adhesives , 2018, Journal of Materials Science: Materials in Electronics.

[7]  T. Takao,et al.  Fabrication, microstructure and persistent current measurement of an intermediate grown superconducting (iGS) joint between REBCO-coated conductors , 2017 .

[8]  G. Nishijima,et al.  Superconducting joints using Bi-added PbSn solders , 2017 .

[9]  C. Grovenor,et al.  Persistent current joints between technological superconductors , 2015 .

[10]  Woo Jin Hyun,et al.  Screen Printing of Highly Loaded Silver Inks on Plastic Substrates Using Silicon Stencils. , 2015, ACS applied materials & interfaces.

[11]  S. Magdassi,et al.  Conductive nanomaterials for printed electronics. , 2014, Small.

[12]  Priti Gupta,et al.  Highly oriented, free-standing, superconducting NbN films growth on chemical vapor deposited graphene , 2014 .

[13]  E. Andreassen,et al.  Rheological characterization of a novel isotropic conductive adhesive – Epoxy filled with metal-coated polymer spheres , 2013 .

[14]  K. Moon,et al.  Highly Conductive, Flexible, Polyurethane‐Based Adhesives for Flexible and Printed Electronics , 2013 .

[15]  Shuhong Yu,et al.  Flexible graphene–polyaniline composite paper for high-performance supercapacitor , 2013 .

[16]  Z. X. Zhang,et al.  The Sintering Behavior of Electrically Conductive Adhesives Filled with Surface Modified Silver Nanowires , 2011 .

[17]  T. Seo,et al.  A Controllable Self‐Assembly Method for Large‐Scale Synthesis of Graphene Sponges and Free‐Standing Graphene Films , 2010 .

[18]  Sea-Fue Wang,et al.  Effects of Silver Oxide Addition on the Electrical Resistivity and Microstructure of Low-Temperature-Curing Metallo-Organic Decomposition Silver Pastes , 2007 .

[19]  R. Vendamme,et al.  Robust free-standing nanomembranes of organic/inorganic interpenetrating networks , 2006, Nature materials.

[20]  Ching-Ping Wong,et al.  Surface Functionalized Silver Nanoparticles for Ultrahigh Conductive Polymer Composites , 2006 .

[21]  John A. Rogers,et al.  Bendable single crystal silicon thin film transistors formed by printing on plastic substrates , 2005 .

[22]  A. Shoji,et al.  Fabrication of grain boundary Josephson junction on top layer of YBCO multilayer using chemical mechanical planarization , 2003 .

[23]  A. Shoji,et al.  Fabrication of High-Quality YBa2Cu3O7-δ Multilayer Structure Using Chemical Mechanical Planarization for Superconducting Quantum Interference Device Gradiometer , 2002 .

[24]  R. Saraf,et al.  Corrosion and Protection of a Conductive Silver Paste , 1995 .

[25]  Frederick C. Wellstood,et al.  Thin‐film multilayer interconnect technology for YBa2Cu3O7−x , 1994 .

[26]  K. Jayaraman.  Super conductivity , 1987, Nature.

[27]  Masahiro Aoyagi,et al.  New fabrication process for Josephson tunnel junctions with (niobium nitride, niobium) double‐layered electrodes , 1982 .

[28]  F. Shinoki,et al.  Fabrication of High Quality NbN/Pb Josephson Junction , 1979 .

[29]  W. L. Mcmillan.  TRANSITION TEMPERATURE OF STRONG-COUPLED SUPERCONDUCTORS. , 1968 .

[30]  D. H. Andrews,et al.  An Anomalous Critical Current Effect in Superconducting NbN , 1953 .

[31]  E. Justi,et al.  Supraleitfähige Verbindungen mit extrem hohen Sprungtemperaturen (NbH und NbN) , 1943 .