scholarly journals Soft nanocomposite electroadhesives for digital micro- and nanotransfer printing

2019 ◽  
Vol 5 (10) ◽  
pp. eaax4790 ◽  
Author(s):  
Sanha Kim ◽  
Yijie Jiang ◽  
Kiera L. Thompson Towell ◽  
Michael S. H. Boutilier ◽  
Nigamaa Nayakanti ◽  
...  
Keyword(s):  
Surface Forces ◽  
Electronic Systems ◽  
Transfer Printing ◽  
Dielectric Thickness ◽  
Light Emitting ◽  
Dry Adhesion ◽  
Pick And Place ◽  
Ag Nanowires ◽  
Automated Handling ◽  
Coated Carbon

Automated handling of microscale objects is essential for manufacturing of next-generation electronic systems. Yet, mechanical pick-and-place technologies cannot manipulate smaller objects whose surface forces dominate over gravity, and emerging microtransfer printing methods require multidirectional motion, heating, and/or chemical bonding to switch adhesion. We introduce soft nanocomposite electroadhesives (SNEs), comprising sparse forests of dielectric-coated carbon nanotubes (CNTs), which have electrostatically switchable dry adhesion. SNEs exhibit 40-fold lower nominal dry adhesion than typical solids, yet their adhesion is increased >100-fold by applying 30 V to the CNTs. We characterize the scaling of adhesion with surface morphology, dielectric thickness, and applied voltage and demonstrate digital transfer printing of films of Ag nanowires, polymer and metal microparticles, and unpackaged light-emitting diodes.

A paper triboelectric nanogenerator for self-powered electronic systems

Nanoscale ◽  
2017 ◽  
Vol 9 (38) ◽  
pp. 14499-14505 ◽  
Author(s):  
Yanchao Mao ◽  
Nan Zhang ◽  
Yingjie Tang ◽  
Meng Wang ◽  
Mingju Chao ◽  
...  
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Mechanical Energy ◽  
Triboelectric Nanogenerator ◽  
Electronic Systems ◽  
Light Emitting ◽  
Self Powered ◽  
White Light Emitting Diodes

A novel paper triboelectric nanogenerator (P-TENG) was successfully developed. The P-TENG can harvest mechanical energy from the action of turning book pages, and the generated electricity could directly light up 80 commercial white light-emitting diodes (LEDs).

Emergence in Interactive Embedded Art

2019 ◽  
Vol 8 (2) ◽  
pp. 1-19
Author(s):  
Andrew V. Kuznetsov
Keyword(s):  
Contemporary Art ◽  
Public Interest ◽  
Visual Art ◽  
Light Emitting Diodes ◽  
Electronic Systems ◽  
Sensors And Actuators ◽  
Light Emitting ◽  
Embedded Electronics ◽  
The University

This article is devoted to the problem of novelty in embedded art. Exciting possibilities of microelectronics for visual art are considered. Implementations of available microcontrollers, sensors and actuators are given. A new kind of interactions between spectators and artworks with embedded electronics was investigated. Special attention is paid to the effect of emergence, which is generated by this interaction. Computational artwork is being considered in a new unconventional context. An aesthetic difference between the deterministic and nondeterministic algorithms was shown. The combination of acrylic paintings with light-emitting diodes (LEDs) was systematically studied to give useful recommendations for an artistic community. Produced artifacts were demonstrated at exhibitions and were used to teach students at the university and VHS Freiburg, Germany. The results showed a great public interest in embedded electronic systems and a tremendous theoretical and practical perspective for the permanently developing contemporary art.

Transfer Printing Method to Obtain Polarized Light Emission in Organic Light-Emitting Device

2012 ◽  
Vol 51 ◽  
pp. 06FJ03
Author(s):  
Hee Yeon Noh ◽  
Chang-sub Park ◽  
Ji-Sub Park ◽  
Shin-Won Kang ◽  
Hak-Rin Kim
Keyword(s):  
Light Emission ◽  
Polarized Light ◽  
Transfer Printing ◽  
Light Emitting ◽  
Organic Light ◽  
Printing Method

scholarly journals ZnO Microcrystals for Light Emitting Diode and Photovoltaic Applications with Integration on Flexible Substrates

2009 ◽  
Vol 1192 ◽  
Author(s):  
Jesse J Cole ◽  
Heiko Jacobs
Keyword(s):  
Flexible Electronics ◽  
Light Emitting Diode ◽  
Flexible Substrate ◽  
Oxygen Plasma Treatment ◽  
Near Band Edge ◽  
Transfer Printing ◽  
Light Emitting ◽  
Integration Approach ◽  
Photovoltaic Applications

AbstractWe report a new integration approach to produce arrays of ZnO microcrystals for optoelectronic and photovoltaic applications. Demonstrated applications are n-ZnO/p-GaN heterojunction LEDs and photovoltaic cells. The integration process uses an oxygen plasma treatment in combination with a photoresist pattern on Magnesium doped GaN substrates to define a narrow sub-100nm width nucleation region. ZnO is synthesized in the defined areas by a hydrothermal technique using zinc acetate and hexamethylenetetramine precursors. Nucleation is followed by lateral epitaxial overgrowth producing single crystal disks of ZnO. The process provides control over the dimension and location of the ZnO crystals. The quality of the patterned ZnO is high; the commonly observed defect related emission in the electroluminescence spectra is suppressed and a single near-band-edge UV peak is observed. Transfer printing of the ZnO microcrystals onto a flexible substrate is also demonstrated in the context of transparent flexible electronics.

Rapidly tunable and highly reversible bio-inspired dry adhesion for transfer printing in air and a vacuum

Soft Matter ◽  
2019 ◽  
Vol 15 (1) ◽  
pp. 30-37 ◽  
Author(s):  
Changhong Linghu ◽  
Chengjun Wang ◽  
Nuo Cen ◽  
Jiaming Wu ◽  
Zhengfeng Lai ◽  
...  
Keyword(s):  
Transfer Printing ◽  
Magnetically Actuated ◽  
Dry Adhesion

Magnetically actuated aphid-inspired dry adhesion is developed with rapid tunability and high reversibility and demonstrated in transfer printing both in air and in a vacuum.

scholarly journals Universal SMP gripper with massive and selective capabilities for multiscaled, arbitrarily shaped objects

2020 ◽  
Vol 6 (7) ◽  
pp. eaay5120 ◽  
Author(s):  
Changhong Linghu ◽  
Shun Zhang ◽  
Chengjun Wang ◽  
Kaixin Yu ◽  
Chenglong Li ◽  
...  
Keyword(s):  
Grip Force ◽  
Shape Recovery ◽  
Shape Memory Polymer ◽  
Transfer Printing ◽  
Daily Lives ◽  
Steel Sphere ◽  
Light Emitting ◽  
3D Objects ◽  
Wide Range ◽  
Scale Down

Grippers are widely used for the gripping, manipulation, and assembly of objects with a wide range of scales, shapes, and quantities in research, industry, and our daily lives. A simple yet universal solution is very challenging. Here, we manage to address this challenge utilizing a simple shape memory polymer (SMP) block. The embedding of objects into the SMP enables the gripping while the shape recovery upon stimulation facilitates the releasing. Systematic studies show that friction, suction, and interlocking effects dominate the grip force individually or collectively. This universal SMP gripper design provides a versatile solution to grip and manipulate multiscaled (from centimeter scale down to 10-μm scale) 3D objects with arbitrary shapes, in individual, deterministic, or massive, selective ways. These extraordinary capabilities are demonstrated by the gripping and manipulation of macroscaled objects, mesoscaled steel sphere arrays and microparticles, and the selective and patterned transfer printing of micro light-emitting diodes.

scholarly journals Integrated dual-color InGaN light-emitting diode array through transfer printing

2015 ◽  
Author(s):  
K. Rae ◽  
E. Y. Xie ◽  
A. J. Trindade ◽  
B. Guilhabert ◽  
R. Ferreira ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Diode Array ◽  
Transfer Printing ◽  
Light Emitting ◽  
Dual Color

Improved device performances in polymer light-emitting diodes using a stamp transfer printing process

2009 ◽  
Vol 10 (2) ◽  
pp. 372-375 ◽  
Author(s):  
Chul Woong Joo ◽  
Soon Ok Jeon ◽  
Kyoung Soo Yook ◽  
Jun Yeob Lee
Keyword(s):  
Light Emitting Diodes ◽  
Transfer Printing ◽  
Printing Process ◽  
Light Emitting ◽  
Polymer Light Emitting Diodes

Transfer printing of polymer light-emitting devices with a small molecular seeding layer featuring thermally activated delayed fluorescence for triplet harvesting

2020 ◽  
Vol 5 (1) ◽  
pp. 144-149 ◽  
Author(s):  
Yang Tang ◽  
Yuhan Gao ◽  
Guohua Xie ◽  
Chuluo Yang
Keyword(s):  
Delayed Fluorescence ◽  
Transfer Printing ◽  
Printing Technology ◽  
Seeding Layer ◽  
Thermally Activated Delayed Fluorescence ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Thermally Activated ◽  
Polymer Light Emitting Devices ◽  
Triplet Harvesting

Transfer-printing technology combined with a TADF-based HTL realized a 2-fold enhancement of EL efficiency for a polymer fluorescence emitter.

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