Highly stretchable and oxidation-resistive Cu nanowire heater for replication of the feeling of heat in a virtual world

Kim, Dongkwan; Bang, Junhyuk; Lee, Wonha; Ha, Inho; Lee, Jun Young; Eom, Hyo J.; Kim, Myungsin; Park, Jungjae; Choi, Jae Weon; Kwon, Jinhyung; Han, Seungyong; Park, Hyojoon; Lee, Dongjun; Ko, Seung Hwan

doi:10.1039/d0ta00380h

Cited by 64 publications

(53 citation statements)

References 31 publications

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“…The electrophysiology (EP) sensor is made up of the nanowire network and polyurethane acrylate(PUA), which were further processed by laser‐assisted nanowelding and patterning. [ 33 ] Additional mechanical and electrical properties were investigated for the demonstrated EP sensor (Figures S9 and S10, Supporting Information) The sensor consists of three 5 mm ×5 mm discrete electrodes (reference, ground and measurement), which are softly connected with the tail electrode of 0.4‐mm‐thick nanowire pattern ( Figure a). The fabricated sensor has 100–200 ohm of two‐point resistance between the end of the square and tail electrode.…”

Section: Resultsmentioning

confidence: 99%

“…Fabrication of the EP Sensor: The EP sensor was fabricated with laser patterning process of CuAuNW-polyurethane acrylate (PUA, SEA-1, CCTech). [33] Through vacuum transfer process, required amount of CuAuNW was transferred onto the sacrificial substrate. Then the delivered CuAuNW film was nanowelded using a circularly polarized laser of a wavelength of 532 nm (laser power: 100 mW, scan speed: 700 mm s −1 ).…”

Section: Methodsmentioning

confidence: 99%

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Biocompatible Cost‐Effective Electrophysiological Monitoring with Oxidation‐Free Cu–Au Core–Shell Nanowire

Kim

Bang

Won

et al. 2020

Adv Materials Technologies

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In spite of its excellent electrical, mechanical, and low‐cost characteristics, copper nanowire has fatal issues in the oxidation problem and the lack of biological compatibility, which occasionally outweighs its advantages and limits its usage as electronics or biodevice applications. In this study, a novel wet chemical synthesis method is developed for the oxidation‐free Cu–Au core–shell nanowire based on the prepared Cu nanowire with alkylamine‐mediated synthesis and ligand exchange. The synthesized Cu–Au core–shell nanowire exhibits improved electrical stability against thermal oxidation under the harsh environment of 80 °C and 80% relative humidity. Additionally, to substantiate suitability for the biomedical application, the enhanced chemical stability and biocompatibility are investigated by utilizing the artificial perspiration and the cell culture. As a proof‐of‐concept demonstration, high performance wearable electromyogram (EMG), electrocardiogram (ECG) sensors for electrophysiological monitoring with the Cu–Au core–shell nanowire electrode are demonstrated with superior oxidation‐resistance and biocompatibility even after the harsh environment test. The Cu–Au core–shell nanowire can provide promising, cost‐effective electrode materials for various wearable electronics applications.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Biocompatible Cost‐Effective Electrophysiological Monitoring with Oxidation‐Free Cu–Au Core–Shell Nanowire

Kim

Bang

Won

et al. 2020

Adv Materials Technologies

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“…This system is so called, “haptics,” that realizes tactile sensing and tracking motion activity. This stand-alone platform enables a contact-free technology in a virtual world where gaming, training, and entertaining by himself/herself is possible in a forthcoming area ( Kim et al., 2020a , 2020b ; Lee et al., 2020a , 2020b ; Mishra et al., 2020 ; Park et al., 2020 ). Oh et al.…”

Section: Recent Advances In Lm-based Wearable Electronicsmentioning

confidence: 99%

Recent advances in liquid-metal-based wearable electronics and materials

et al. 2021

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Summary Soft wearable electronics are rapidly developing through exploration of new materials, fabrication approaches, and design concepts. Although there have been many efforts for decades, a resurgence of interest in liquid metals (LMs) for sensing and wiring functional properties of materials in soft wearable electronics has brought great advances in wearable electronics and materials. Various forms of LMs enable many routes to fabricate flexible and stretchable sensors, circuits, and functional wearables with many desirable properties. This review article presents a systematic overview of recent progresses in LM-enabled wearable electronics that have been achieved through material innovations and the discovery of new fabrication approaches and design architectures. We also present applications of wearable LM technologies for physiological sensing, activity tracking, and energy harvesting. Finally, we discuss a perspective on future opportunities and challenges for wearable LM electronics as this field continues to grow.

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“…[15][16][17][18][19] M2H devices provide electrical, thermal, visual, or mechanical feedbacks that simulate various sensations. [20][21][22] H2M control systems use sensors with various mechanisms. These include strain sensors that directly measure deformations due to human motions or stretchable electrodes, which indirectly measure electric signals of the muscle.…”

Section: Introductionmentioning

confidence: 99%

“…[ 15–19 ] M2H devices provide electrical, thermal, visual, or mechanical feedbacks that simulate various sensations. [ 20–22 ]…”

Section: Introductionmentioning

confidence: 99%

Smart Stretchable Electronics for Advanced Human–Machine Interface

Kim

Suh

2020

Advanced Intelligent Systems

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Highly stretchable and oxidation-resistive Cu nanowire heater for replication of the feeling of heat in a virtual world

Abstract: A thermal haptic device was developed to replicate thermal feelings for virtual reality applications.

Cited by 64 publications

References 31 publications

Biocompatible Cost‐Effective Electrophysiological Monitoring with Oxidation‐Free Cu–Au Core–Shell Nanowire

Biocompatible Cost‐Effective Electrophysiological Monitoring with Oxidation‐Free Cu–Au Core–Shell Nanowire

Recent advances in liquid-metal-based wearable electronics and materials

Smart Stretchable Electronics for Advanced Human–Machine Interface

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