Surface treatment-assisted switchable transfer printing on polydimethylsiloxane films

2016 ◽  
Vol 4 (16) ◽  
pp. 3467-3476 ◽  
Author(s):  
Juanjuan Wang ◽  
Jixun Xie ◽  
Chuanyong Zong ◽  
Xue Han ◽  
Haipeng Ji ◽  
...  

Switchable transfer printing with different “soft/hard” combinations of the PDMS stamp and substrate assisted by surface oxidation.

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 1076
Author(s):  
Florentyna Sosada-Ludwikowska ◽  
Robert Wimmer-Teubenbacher ◽  
Anton Köck

Multi-nanowire based chemical gas sensors were produced employing a fast and simple transfer printing technology. SnO2 nanowires (NWs) were grown by a specific two-step technology including spray pyrolysis deposition and a thermal annealing process in presence of a Cu-catalyst. Subsequently the SnO2 NWs were print transferred by a polydimethylsiloxane (PDMS) stamp on Si-substrates with gold inter-digital electrode structures (IDES) creating a multi-NW chemical sensing device. The print-transfer technology enables a fast, easy and cheap fabrication of NW-based sensor devices with a good reproducibility. High sensitivity to H2S has been achieved, the performance results are presented in this work.


2017 ◽  
Vol 134 (32) ◽  
pp. 45184 ◽  
Author(s):  
Da-Hyeok Lee ◽  
Seok-Heon Jung ◽  
O Jun Kwon ◽  
Myoung-Soo Kim ◽  
Jin-Seok Park ◽  
...  

Coatings ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1201
Author(s):  
Ling Jiang ◽  
Mengjie Wu ◽  
Qiuping Yu ◽  
Yuxia Shan ◽  
Yuyan Zhang

Microtransfer printing is a sophisticated technique for the heterogeneous integration of separately fabricated micro/nano-elements into functional systems by virtue of an elastomeric stamp. One important factor influencing the capability of this technique depends on the adhesion between the viscoelastic stamp and the transferred element. To provide theoretical guidance for the control of adhesion in the transfer printing process, a finite element model for the viscoelastic adhesive contact between a polydimethylsiloxane (PDMS) stamp and a spherical transferred element was established, in which the adhesive interaction was modeled by the Lennard-Jones surface force law. Effects of the unloading velocity, preload, and thermodynamic work of adhesion on the adhesion strength, characterized by the pull-off force, were examined for a loading-dwelling-unloading history. Simulation results showed that the unloading path deviated from the loading path due to the viscoelastic property of the PDMS stamp. The pull-off force increased with the unloading velocity, and the increasing ratio was large at first and then became low. Furthermore, the influence of the preload on increasing the pull-off force was more significant under larger unloading velocity than that under smaller unloading velocity. In addition, the pull-off force increased remarkably with the thermodynamic work of adhesion at a fixed maximum approach.


2019 ◽  
Vol 13 (6) ◽  
pp. 810-816
Author(s):  
Arata Kaneko ◽  
◽  
Taira Katayama ◽  
Shun Morishita

Transfer printing of a thin film is a great candidate technique for micro/nanofabrication for microelectromechanical system (MEMS) elements. The authors propose a technique to apply atomic diffusion bonding to transfer printing of a gold (Au) thin film. When a substrate is previously coated with Au thin film as an adhesive, another Au thin film can be transfer-printed from a h-PDMS stamp to the substrate. It enables 50 μm-wide line patterns of the Au thin film located on the Au-coated Si substrate, whereas the Au thin film cannot be transfer-printed on a bare (uncoated) Si surface. The interface between two Au thin films disappears after transfer printing; hence, the Au atoms can interdiffuse from one to another to make a strong bonding. This process can be performed with a soft contact without any pressure in atmospheric and vacuum conditions. In the case of Au, the atoms can interdiffuse around a contacted area at room temperature. Moreover, one can make 50 μm-wide line patterns by 1 min of transfer printing and that of 24 h. The proposed process makes the line patterns of the Au thin film transfer-printed to be a bridged microbeam over the grooves when a prestructured (grooved) substrate is prepared.


2020 ◽  
Vol 193-194 ◽  
pp. 134-140
Author(s):  
Cunman Liang ◽  
Fujun Wang ◽  
Zhichen Huo ◽  
Beichao Shi ◽  
Yanling Tian ◽  
...  

2012 ◽  
Vol 22 (42) ◽  
pp. 22763 ◽  
Author(s):  
Kyunghee Lee ◽  
Joohee Kim ◽  
Kyusoon Shin ◽  
Youn Sang Kim

Author(s):  
S. McKernan ◽  
C. B. Carter

The oxidation of natural olivine has previously been performed on bulk samples and the reactions followed by preparation of TEM specimens from the annealed material. These results show that below ∼1000°C hematite and amorphous silica are formed, particularly around dislocations. At higher temperatures magnetite and some enstatite-like phase are formed. In both cases the olivine is left almost totally Fe depleted. By performing the oxidation on characterized thin TEM specimens it is possible to obtain more information on the nucleation and growth of the second phases formed. The conditions in a thin foil, however, are very different from those in the bulk especially with regard to surface effects. The nucleation of precipitates in particular may be expected to occur differently in these thin foils than in the bulk.TEM specimens of natural olivine (approximate composition Mg+Fe+Si2o4) which had been annealed at 1000°C for 1 hr were prepared by mechanical polishing and dimpling, followed by Ar ion milling to perforation. The specimens were characterized in the electron microscope and then heated in air in alumina boats to 900°C for between 30 and 180 minutes.


2001 ◽  
Vol 7 (S2) ◽  
pp. 1276-1277
Author(s):  
Y. Akin ◽  
R.E. Goddard ◽  
W. Sigmund ◽  
Y.S. Hascicek

Deposition of highly textured ReBa2Cu3O7−δ (RBCO) films on metallic substrates requires a buffer layer to prevent chemical reactions, reduce lattice mismatch between metallic substrate and superconducting film layer, and to prevent diffusion of metal atoms into the superconductor film. Nickel tapes are bi-axially textured by cold rolling and annealing at appropriate temperature (RABiTS) for epitaxial growth of YBa2Cu3O7−δ (YBCO) films. As buffer layers, several oxide thin films and then YBCO were coated on bi-axially textured nickel tapes by dip coating sol-gel process. Biaxially oriented NiO on the cube-textured nickel tape by a process named Surface-Oxidation- Epitaxy (SEO) has been introduced as an alternative buffer layer. in this work we have studied in situ growth of nickel oxide by ESEM and hot stage.Representative cold rolled nickel tape (99.999%) was annealed in an electric furnace under 4% hydrogen-96% argon gas mixture at 1050°C to get bi-axially textured nickel tape.


1988 ◽  
Vol 49 (C8) ◽  
pp. C8-1711-C8-1712 ◽  
Author(s):  
S. Klahn ◽  
H. Heitmann ◽  
M. Rosenkranz ◽  
H. J. Tolle

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