1
|
Yuan X, Sun Y, Guo H, Du Y, Shi K, Hao W, Wang C. A Delicate Balance Between Spin-Wave Mediated Weak Localization and Electron-Phonon Scattering in the Design of Zero Temperature Coefficient of Resistivity. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2311599. [PMID: 38214434 DOI: 10.1002/smll.202311599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 12/20/2023] [Indexed: 01/13/2024]
Abstract
Zero thermal coefficients of resistivity (ZTCR) materials exhibit minimal changes in resistance with temperature variations, making them essential in modern advanced technologies. The current ZTCR materials, which are based on the resistivity saturation effect of heavy metals, tend to function at elevated temperatures because the mean free path approaches the lower limit of the semiclassical Boltzmann theory when the temperature is sufficiently high. ZTCR materials working at low-temperatures are difficult to achieve due to electron-phonon scattering, which results in increased resistivity according to Bloch's theory. In this work, the ZTCR behavior at low-temperatures is realized in pre-microstrained Mn3NiN. The delicate balance between the resistivity contribution from electron-phonon scattering and spin-wave mediated weak localization is well revealed. A remarkable temperature coefficient of resistivity (TCR) value as low as 1.9 ppm K-1 (50 K ≤ T ≤ 200 K) is obtained, which is significantly superior to the threshold value of ZTCR behavior and the application standard of commercial ZTCR materials. The demonstration provides a unique paradigm in the design of ZTCR materials through the contraction effects of two opposite conductance mechanisms with positive and negative thermal coefficients of resistivity.
Collapse
Affiliation(s)
- Xiuliang Yuan
- School of Physics, Beihang University, Beijing, 100191, China
| | - Ying Sun
- School of Physics, Beihang University, Beijing, 100191, China
| | - Huaiming Guo
- School of Physics, Beihang University, Beijing, 100191, China
| | - Yi Du
- School of Physics, Beihang University, Beijing, 100191, China
| | - Kewen Shi
- School of Integrated Circuit Science and Engineering, Beihang University, Beijing, 100191, China
| | - Weichang Hao
- School of Physics, Beihang University, Beijing, 100191, China
| | - Cong Wang
- School of Physics, Beihang University, Beijing, 100191, China
- School of Integrated Circuit Science and Engineering, Beihang University, Beijing, 100191, China
| |
Collapse
|
2
|
Choi HJ, Ahn J, Jung BK, Choi YK, Park T, Bang J, Park J, Yang Y, Son G, Oh SJ. Highly Conductive and Sensitive Wearable Strain Sensors with Metal/Nanoparticle Double Layer for Noninterference Voice Detection. ACS APPLIED MATERIALS & INTERFACES 2023; 15:42836-42844. [PMID: 37665133 DOI: 10.1021/acsami.3c08050] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
Human voice recognition via skin-attachable devices has significant potential for gathering important physiological information from acoustic data without background noise interference. In this study, a highly sensitive and conductive wearable crack-based strain sensor was developed for voice-recognition systems. The sensor was fabricated using a double-layer structure of Ag nanoparticles (NPs) and Ag metal on a biocompatible polydimethylsiloxane substrate. The top metal layer acts as a conducting active layer, whereas the bottom Ag NP layer induces channel cracks in the upper layer, effectively hindering current flow. Subsequently, the double-layer film exhibits a low electrical resistance value (<5 × 10-5 Ω cm), ultrahigh sensitivity (gauge factor = 1870), and a fast response/recovery time (252/168 μs). A sound wave was detected at a high frequency of 15 kHz with a signal-to-noise ratio (SNR) over 40 dB. The sensor exhibited excellent anti-interference characteristics and effectively differentiated between different voice qualities (modal, pressed, and breathy), with a systematic analysis revealing successful detection of the laryngeal state and glottal source. This ultrasensitive wearable sensor has potential applications in various physiological signal measurement methods, personalized healthcare systems, and ubiquitous computing.
Collapse
Affiliation(s)
- Hyung Jin Choi
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Junhyuk Ahn
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Byung Ku Jung
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Young Kyun Choi
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Taesung Park
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Junsung Bang
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Junhyeok Park
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Yoonji Yang
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Gayeon Son
- Department of English Language and Industry, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Soong Ju Oh
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| |
Collapse
|
3
|
Kim J, Yang C, Yun T, Woo S, Kim H, Lee M, Jeong M, Ryu H, Kim N, Park S, Lee J. Surface-Embedding of Mo Microparticles for Robust and Conductive Biodegradable Fiber Electrodes: Toward 1D Flexible Transient Electronics. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2206186. [PMID: 36995044 DOI: 10.1002/advs.202206186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 03/01/2023] [Indexed: 05/27/2023]
Abstract
Fiber-based implantable electronics are one of promising candidates for in vivo biomedical applications thanks to their unique structural advantages. However, development of fiber-based implantable electronic devices with biodegradable capability remains a challenge due to the lack of biodegradable fiber electrodes with high electrical and mechanical properties. Here, a biocompatible and biodegradable fiber electrode which simultaneously exhibits high electrical conductivity and mechanical robustness is presented. The fiber electrode is fabricated through a facile approach that incorporates a large amount of Mo microparticles into outermost volume of a biodegradable polycaprolactone (PCL) fiber scaffold in a concentrated manner. The biodegradable fiber electrode simultaneously exhibits a remarkable electrical performance (≈43.5 Ω cm-1 ), mechanical robustness, bending stability, and durability for more than 4000 bending cycles based on the Mo/PCL conductive layer and intact PCL core in the fiber electrode. The electrical behavior of the biodegradable fiber electrode under the bending deformation is analyzed by an analytical prediction and a numerical simulation. In addition, the biocompatible properties and degradation behavior of the fiber electrode are systematically investigated. The potential of biodegradable fiber electrode is demonstrated in various applications such as an interconnect, a suturable temperature sensor, and an in vivo electrical stimulator.
Collapse
Affiliation(s)
- Jinho Kim
- Department of Robotics and Mechatronics Engineering, DGIST, 333, Techno jungang-daero, Hyeonpung-eup, Dalseong-gun, Daegu, 42988, Republic of Korea
| | - Congqi Yang
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Taehyun Yun
- Department of Mechanical Engineering, Gachon University, 1342, Seongnam-daero, Sujeong-gu, Seongnam-si, Gyeonggi-do, 13120, Republic of Korea
| | - Seohyun Woo
- Department of Robotics and Mechatronics Engineering, DGIST, 333, Techno jungang-daero, Hyeonpung-eup, Dalseong-gun, Daegu, 42988, Republic of Korea
| | - Hwajoong Kim
- Department of Robotics and Mechatronics Engineering, DGIST, 333, Techno jungang-daero, Hyeonpung-eup, Dalseong-gun, Daegu, 42988, Republic of Korea
| | - Mugeun Lee
- Department of Robotics and Mechatronics Engineering, DGIST, 333, Techno jungang-daero, Hyeonpung-eup, Dalseong-gun, Daegu, 42988, Republic of Korea
| | - Minji Jeong
- Department of Robotics and Mechatronics Engineering, DGIST, 333, Techno jungang-daero, Hyeonpung-eup, Dalseong-gun, Daegu, 42988, Republic of Korea
| | - Hyeji Ryu
- Department of Robotics and Mechatronics Engineering, DGIST, 333, Techno jungang-daero, Hyeonpung-eup, Dalseong-gun, Daegu, 42988, Republic of Korea
| | - Namjung Kim
- Department of Mechanical Engineering, Gachon University, 1342, Seongnam-daero, Sujeong-gu, Seongnam-si, Gyeonggi-do, 13120, Republic of Korea
| | - Seongjun Park
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Jaehong Lee
- Department of Robotics and Mechatronics Engineering, DGIST, 333, Techno jungang-daero, Hyeonpung-eup, Dalseong-gun, Daegu, 42988, Republic of Korea
| |
Collapse
|
4
|
Ahn J, Choi HJ, Bang J, Son G, Oh SJ. Ink-lithographic fabrication of silver-nanocrystal-based multiaxial strain gauge sensors through the coffee-ring effect for voice recognition applications. NANO CONVERGENCE 2022; 9:46. [PMID: 36209342 PMCID: PMC9547562 DOI: 10.1186/s40580-022-00337-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 09/22/2022] [Indexed: 06/16/2023]
Abstract
Human voice recognition techniques have remarkable potential for clinical applications because information from acoustic signals can reflect human body conditions. This paper reports the fabrication of Ag nanocrystal (NC)-based multiaxial wearable strain gauge sensors by ink-lithography for voice recognition systems. Benefiting from the one-step-device-fabrication strategy of ink-lithography, which can yield Ag NC patterns with specific dimensions and endow physical properties, the Ag NC-based multiaxial strain sensors can be fabricated on an ultrathin substrate (~ 6 μm). Additionally, the coffee-ring effect can be induced onto the Ag NC patterns to realize high sensitivity and angle dependence (gauge factors [Formula: see text] = 11.7 ± 1.2 and [Formula: see text] = 105.5 ± 20.1); moreover, the voice onset time for voice recognition can be detected by the sensors. These features assist in distinguishing between voiced and voiceless plosive contrasts via measurements of contact-based voice onset time differences and can act as a cornerstone for further advancements in wearable sensors as well as voice recognition and analysis.
Collapse
Affiliation(s)
- Junhyuk Ahn
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Hyung Jin Choi
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Junsung Bang
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Gayeon Son
- Department of English Language and Industry, Kwangwoon University, Seoul, 01897, Republic of Korea.
| | - Soong Ju Oh
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea.
| |
Collapse
|
5
|
Lee SY, Lim H, Bae JH, Chae D, Paik T, Lee H, Oh SJ. Designing a self-classifying smart device with sensor, display, and radiative cooling functions via spectrum-selective response. NANOSCALE HORIZONS 2022; 7:1087-1094. [PMID: 35903990 DOI: 10.1039/d2nh00206j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This paper presents a self-classifying smart device that intelligently differentiates and operates three functions: electroluminescence display, ultraviolet light sensor, and thermal management via radiative cooling. The optical and electrical properties of the materials and structures are designed to achieve a spectrum-selective response, which enables the integration of the aforementioned functions into one device without any noise or interference. Spectrum-selective materials that absorb, emit, and radiate light with ultraviolet to mid-infrared wavelengths and device structures designed to prevent interference are achieved by using thin metal films, dielectric layers, and nanocrystals. The designed self-classifying smart device exhibits bright blue light emission upon current supply (display), green light emission upon exposure to UV light (sensor), and radiative cooling (thermal management). Furthermore, a smart device and house system with a display, UV light sensor, and radiative cooling performance was demonstrated. The findings of this study open new avenues for device integration in next-generation wearable device fabrication.
Collapse
Affiliation(s)
- Sang Yeop Lee
- Department of Materials Science and Engineering, Korea University 145, Anam-ro Seongbuk-gu, Seoul, 02841, Republic of Korea.
| | - Hangyu Lim
- Department of Materials Science and Engineering, Korea University 145, Anam-ro Seongbuk-gu, Seoul, 02841, Republic of Korea.
| | - Jung Ho Bae
- Department of Materials Science and Engineering, Korea University 145, Anam-ro Seongbuk-gu, Seoul, 02841, Republic of Korea.
| | - Dongwoo Chae
- Department of Materials Science and Engineering, Korea University 145, Anam-ro Seongbuk-gu, Seoul, 02841, Republic of Korea.
| | - Taejong Paik
- School of Integrative Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Heon Lee
- Department of Materials Science and Engineering, Korea University 145, Anam-ro Seongbuk-gu, Seoul, 02841, Republic of Korea.
| | - Soong Ju Oh
- Department of Materials Science and Engineering, Korea University 145, Anam-ro Seongbuk-gu, Seoul, 02841, Republic of Korea.
| |
Collapse
|
6
|
Choi YK, Park T, Lee DHD, Ahn J, Kim YH, Jeon S, Han MJ, Oh SJ. Wearable anti-temperature interference strain sensor with metal nanoparticle thin film and hybrid ligand exchange. NANOSCALE 2022; 14:8628-8639. [PMID: 35660846 DOI: 10.1039/d2nr02392j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Anti-interference characteristics, whereby undesirable signal interference is minimized, are required for multifunctional sensor platforms. In this study, an anti-temperature-interference resistive-type strain sensor, which does not respond to temperature but only to strain, is designed. Anti-interference properties were achieved by modulating the temperature coefficient of resistance (TCR) of metal nanoparticles (NPs) through hybrid chemical treatment with organic and halide ligands that induce negative and positive TCRs, respectively. Consequently, a very low TCR of 1.9 × 10-5 K-1 was obtained. To investigate the origin of this near-zero TCR, analyses of correlated electrical, thermal, and mechanical properties were performed in addition to structural characterization and analysis. Density functional theory calculations and electrical percolation modeling were performed to illuminate the transport behavior in the near-zero-TCR NP thin films. Finally, we fabricated a high-performance anti-temperature-interference strain sensor using a solution process. The sensors detect a variety of strains, including those arising from large movements, such as wrist and knee movements, and fine movements, such as artery pulses or movements made during calligraphy, and did not respond to temperature changes.
Collapse
Affiliation(s)
- Young Kyun Choi
- Department of Materials Science and Engineering, Korea University, 145, Anam-ro Seongbuk-gu, Seoul, 02841, Republic of Korea.
| | - Taesung Park
- Department of Materials Science and Engineering, Korea University, 145, Anam-ro Seongbuk-gu, Seoul, 02841, Republic of Korea.
| | - Dong Hyun David Lee
- Department of Physics, Korea Advanced Institute of Science and Technology, 291, Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Junhyuk Ahn
- Department of Materials Science and Engineering, Korea University, 145, Anam-ro Seongbuk-gu, Seoul, 02841, Republic of Korea.
| | - Yong Hwan Kim
- Department of Materials Science and Engineering, Korea University, 145, Anam-ro Seongbuk-gu, Seoul, 02841, Republic of Korea.
| | - Sanghyun Jeon
- Department of Materials Science and Engineering, Korea University, 145, Anam-ro Seongbuk-gu, Seoul, 02841, Republic of Korea.
| | - Myung Joon Han
- Department of Physics, Korea Advanced Institute of Science and Technology, 291, Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Soong Ju Oh
- Department of Materials Science and Engineering, Korea University, 145, Anam-ro Seongbuk-gu, Seoul, 02841, Republic of Korea.
| |
Collapse
|
7
|
Yang X, Lv S, Li T, Hao S, Zhu H, Cheng Y, Li S, Song H. Dual Thermo-Responsive and Strain-Responsive Ionogels for Smart Windows and Temperature/Motion Monitoring. ACS APPLIED MATERIALS & INTERFACES 2022; 14:20083-20092. [PMID: 35468277 DOI: 10.1021/acsami.2c03142] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In this work, a stretchable, dual thermo-responsive and strain-responsive ionogel has been synthesized by one-step photopolymerization. The obtained ionogel shows an ultrahigh stretchability (∼3000%), a high ionic conductivity (up to 3.1 mS/cm), and a good temperature tolerance (-40 to 300 °C). Importantly, these ionogels show an upper critical solution temperature-type phase transition with a wide tunable phase-transition temperature (17.5-42.5 °C) and reversible color/transparency switching. In particular, the as-prepared ionogel-based flexible/wearable temperature monitors and smart windows show an excellent designability and programmability, temperature modulation ability, and thermal responsiveness. Moreover, the ionogels-based strain sensors have temperature- and strain-dual responsibility and a broad strain-sensing range (1-700%), which can effectively monitor various motions. This strategy of fabricating dual thermo- and strain-responsive ionogels by using a one-step method and only one polymer holds great promise for the next generation of multifunctional stimuli-responsive materials.
Collapse
Affiliation(s)
- Xuemeng Yang
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Shufang Lv
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Tianci Li
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Shuai Hao
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Hongnan Zhu
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Yan Cheng
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Shuaijie Li
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| | - Hongzan Song
- College of Chemistry and Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China
| |
Collapse
|
8
|
Niu S, Chang X, Zhu Z, Qin Z, Li J, Jiang Y, Wang D, Yang C, Gao Y, Sun S. Low-Temperature Wearable Strain Sensor Based on a Silver Nanowires/Graphene Composite with a Near-Zero Temperature Coefficient of Resistance. ACS APPLIED MATERIALS & INTERFACES 2021; 13:55307-55318. [PMID: 34762410 DOI: 10.1021/acsami.1c14671] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Currently, the exploration of wearable strain sensors that can work under subzero temperatures while simultaneously possessing anti-interference capability toward temperature is still a grand challenge. Herein, we present a low-temperature wearable strain sensor that is constructed via the incorporation of a Ag nanowires/graphene (Ag NWs/G) composite into the polydimethylsiloxane (PDMS) polymer. The Ag NWs/G/PDMS strain sensor exhibits promising flexibility at a very low temperature (-40 °C), outstanding fatigue resistance with low hysteresis energy, and near-zero temperature coefficient of resistance (TCR). The Ag NWs/G/PDMS strain sensor shows excellent sensing performance under subzero temperatures with a very high gauge factor of 9156 under a strain of >36%, accompanied by a noninterference characteristic to temperature (-40 to 20 °C). The Ag NWs/G/PDMS strain sensor also demonstrates the feasibility of monitoring various human movements such as finger bending, arm waving, wrist rotation, and knee bending under both room temperature and low-temperature conditions. This work initiates a new promising strategy to construct next-generation wearable strain sensors that can work stably and effectively under very low temperatures.
Collapse
Affiliation(s)
- Shicong Niu
- Institute of Marine Materials Science and Engineering, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Xueting Chang
- Institute of Marine Materials Science and Engineering, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Zhihao Zhu
- College of Logistics Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Zhiwei Qin
- College of Logistics Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Junfeng Li
- College of Logistics Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Yingchang Jiang
- Institute of Marine Materials Science and Engineering, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Dongsheng Wang
- Institute of Marine Materials Science and Engineering, College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Chuanxiao Yang
- College of Logistics Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Yang Gao
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Shibin Sun
- College of Logistics Engineering, Shanghai Maritime University, Shanghai 201306, China
| |
Collapse
|