{"title":"A high selectivity and low detection limit carbon monoxide sensor based on Au-GO/Co-ZnO composite material.","authors":"Tianye Zhou, Tingting Chen, Zhimei Qi, Jianhai Sun, Zhiyuan Niu, Xuehui Li, Tianjun Ma, Xiangqian Kong, Liang Zhao, Junyi Lin, Bofeng Luo, Zhengkai Li","doi":"10.1038/s41378-025-00981-9","DOIUrl":"10.1038/s41378-025-00981-9","url":null,"abstract":"<p><p>Metal oxide semiconductor gas sensors offer high sensitivity and low-cost gas detection. However, low selectivity and poor stability are significant challenges associated with these sensors. In this study, we designed a sheet-like stacked zinc oxide (ZnO) nanomaterial using ZIF-67 and prepared the nanomaterial AGCZ-2 by doping with gold-modified graphene oxide (GO). This material demonstrates rapid and sensitive detection of low concentrations of carbon monoxide (CO) gas and exhibits excellent selectivity towards CO. The crystal structure, microstructure, elemental composition, and pore size of the material were characterized and analyzed using XRD, FESEM, EDS elemental analysis, TEM, and N<sub>2</sub> adsorption-desorption techniques. The CO gas sensing performance of the sensor prepared in this study was tested, and the results showed that the AGCZ-2 sensor, operating at an optimal temperature of 260 °C, had a response value of 5.84 for 50 ppm CO, with response and recovery times of 103 s and 84 s, respectively. In terms of selectivity, the response of the AGCZ-2 sensor to CO was 3.84 times that of the second most sensitive gas (hydrogen), indicating excellent selectivity towards CO over hydrogen. Additionally, the sensor exhibited good stability and repeatability, with a relative standard deviation of 2.27% for the response values to 5 ppm CO gas over five consecutive tests. Over a 28-day testing period, the sensor's response to 5 ppm CO exhibited a decay rate of 5.22%, with a relative standard deviation of 2.41.</p>","PeriodicalId":18560,"journal":{"name":"Microsystems & Nanoengineering","volume":"11 1","pages":"177"},"PeriodicalIF":9.9,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12480056/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145192022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yutao Xu, Chun Wang, Junsheng Lv, Gang Shao, Xueyong Wei
{"title":"An ultra-stable MEMS resonator with ±14 ppb frequency stability realized by nonlinearity-mediated drift suppression.","authors":"Yutao Xu, Chun Wang, Junsheng Lv, Gang Shao, Xueyong Wei","doi":"10.1038/s41378-025-01025-y","DOIUrl":"10.1038/s41378-025-01025-y","url":null,"abstract":"<p><p>Silicon-based MEMS resonators have shown promising potential to replace quartz crystal resonators in many fields, especially in realizing precise timing. However, the large temperature-dependent properties of single-crystal silicon render the MEMS resonators suffer from severe degradation in frequency stability caused by temperature variation, thus hindering the development of silicon-based resonant devices. Although oven-controlled MEMS resonators have been demonstrated to achieve ppb-level frequency stability, the on-chip oven control scheme requires a redesign of the resonator structures or even a change in the manufacturing process, offering little post-fabrication flexibility and limiting its engineering applications. In this work, a nonlinearity-mediated temperature compensation scheme is proposed with the objective of rapidly and precisely controlling the frequency stability of the MEMS resonator. By employing the nonlinear amplitude-frequency dependence of a Duffing resonator to actively suppress the frequency drift after the first stage oven control, the reported MEMS resonator exhibits a frequency stability of ±14 ppb.</p>","PeriodicalId":18560,"journal":{"name":"Microsystems & Nanoengineering","volume":"11 1","pages":"175"},"PeriodicalIF":9.9,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12460679/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145137589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Smart resonant micro-sensor and micro-actuator: high-performance, wide range bi-axial magnetic sensitive/ insensitive micro-device for multifunctional sensing applications.","authors":"Hanin Amara, Nadeem Tariq Beigh, Nouha Alcheikh","doi":"10.1038/s41378-025-01041-y","DOIUrl":"10.1038/s41378-025-01041-y","url":null,"abstract":"<p><p>With the rapid development of intelligent and autonomous systems, such as wearable health monitoring and advanced manufacturing robots, there is a growing demand for the development of advanced, miniaturized smart sensors and actuator systems. In this context, a single microdevice with hybrid functionality as both a sensor and actuator demonstrates excellent performance across diverse applications, holds significant promise. Herein, we present a proof-of-concept for a high-performance bi-directional Lorentz force magnetometer and actuator, implemented within a single microelectromechanical system (MEMS) device. Moreover, the device demonstrates insensitivity to magnetic fields, making it highly suitable for applications that require anti-crossing behavior in magnetic environments. The design is based on a clamped-guided curved microresonator connected to straight and V-shaped beams of micro-actuators. The operation of the proposed device relies on the flexibility to control the applied electrothermal excitation in different ways, offering smart thermal actuation and dynamic sensing mechanisms. Furthermore, the proposed technique allows tuning of the first symmetric mode, achieving either a high or low frequency shift based on input power levels. Hence, this study provides valuable insights for improving tunability in sensitivity and power for various actuation mechanisms. At atmospheric pressure and an input power of 19.5 mW, the device functions as a high-performance biaxial magnetic sensor with a sensitivity (S) of ~36.58% T<sup>-1</sup>, an excellent linearity in the medium-to-high magnetic field range of ±400 mT, and a minimum detectable field, B<sub>min</sub> of 0.83 µT Hz<sup>-1</sup>. In contrast, it can be tuned as a magnetic-field-insensitive actuator (S = 3.28% T<sup>-1</sup>) with a transversal displacement of ~4 µm, utilizing a negligible power of 43 mW. The diverse operation highlights its hybrid functionality as an actuator or high-performance sensor. These features, combined with the simplicity of fabrication and low cost, make the proposed microdevice highly promising for developing a three-axis magnetic sensor and actuator network system, as well as for various industrial applications.</p>","PeriodicalId":18560,"journal":{"name":"Microsystems & Nanoengineering","volume":"11 1","pages":"174"},"PeriodicalIF":9.9,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12443953/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145080987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Electroosmotic hydraulic-based haptic reproduction of human pulse with high accuracy for remote diagnosis.","authors":"Kangkang Dong, Wentai Deng, Yuanyuan Liu, Huaiyi Chen, Xiongying Ye, Xiaohao Wang, Houde Liu, Fei Tang","doi":"10.1038/s41378-025-01042-x","DOIUrl":"10.1038/s41378-025-01042-x","url":null,"abstract":"<p><p>Haptic pulse reproduction technology enables physicians to conduct remote, contact-free pulse diagnosis by transcending temporal and spatial constraints in traditional medical practice. However, current systems face challenges in accurately reproducing realistic pulse haptic feedback, which impacts diagnostic reliability. Here, we developed an electroosmotic hydraulic-based pulse haptic reproduction interface (PHRI) system that can precisely reproduce realistic haptic information of the human pulse. This PHRI system demonstrates the rapid response and precise control of electroosmotic hydraulics, achieving a frequency response of 500 Hz and an output force of 100 mN at 160 V driving voltage. Besides, time-domain and frequency-domain analyses further confirm high accuracy, with a correlation coefficient of 0.99 between reproduced and actual pulses. When tested under varying pressures, the PHRI system shows a small root mean square error of <1 Pa in frequency spectra. This PHRI technology provides a robust platform for remote pulse diagnosis and advances the integration of traditional Chinese medicine with telemedicine systems.</p>","PeriodicalId":18560,"journal":{"name":"Microsystems & Nanoengineering","volume":"11 1","pages":"173"},"PeriodicalIF":9.9,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12441138/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145075775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Bioelectronic Interfaces and Sensors for Neural Organoids.","authors":"Qifei Wang, Xin Dong, Deming Jiang, Shichao Tian, Yong Qiu, Yuxuan Zhu, Jianguo Wu, Shunuo Shang, Yajie Zhang, Ping Wang, Liujing Zhuang","doi":"10.1038/s41378-025-01038-7","DOIUrl":"10.1038/s41378-025-01038-7","url":null,"abstract":"<p><p>Neural organoids are emerging as promising in vitro models, offering a unique platform to partially recapitulate the structural and functional complexity of the human nervous system. These three-dimensional (3D) constructs, which mimic key aspects of organ architecture, can be reliably derived from pluripotent stem cells (iPSCs) or embryonic stem cells (ESCs). Their ability to faithfully model neural development and disease pathogenesis has positioned them as indispensable tools in neuroscience research. However, to further unleash their potential, there is a pressing need for long-term and stable monitoring of their dynamic functions in a 3D context. This review provides a brief overview on diverse types of neural organoids and their induction protocols. We further highlight recent advancements in bioelectronic interfaces and sensors tailored for 3D culture. Finally, we discuss future directions aimed at advanced methodologies for real-time, multidimensional functional analysis, ultimately paving the way for breakthroughs in understanding neural development and pathology.</p>","PeriodicalId":18560,"journal":{"name":"Microsystems & Nanoengineering","volume":"11 1","pages":"172"},"PeriodicalIF":9.9,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12434145/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145065233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sunandita Sarker, Ziteng Wen, Ruben Acevedo, Andrew C Lamont, Adira Colton, Lucas Kieran Muller, DoHwan Park, Eleonora Tubaldi, Kinneret Rand-Yadin, Ryan D Sochol
{"title":"3D nanoprinting of embryo microinjection needles with anti-clogging features.","authors":"Sunandita Sarker, Ziteng Wen, Ruben Acevedo, Andrew C Lamont, Adira Colton, Lucas Kieran Muller, DoHwan Park, Eleonora Tubaldi, Kinneret Rand-Yadin, Ryan D Sochol","doi":"10.1038/s41378-025-01005-2","DOIUrl":"10.1038/s41378-025-01005-2","url":null,"abstract":"<p><p>Wide-ranging biomedical applications spanning both research and clinical settings rely on microinjection protocols that involve using a long, hollow microneedle to deliver foreign substances directly into biological targets, such as embryos. Unfortunately, conventional microneedles are prone to clogging-e.g., cytoplasmic material from an embryo becoming lodged inside the needle tip during penetration, thereby obstructing delivery-motivating researchers to use top-down microfabrication techniques to modify needle tips and reduce such failure modes. Recent advancements for the submicron-scale additive manufacturing approach, \"Two-Photon Direct Laser Writing (DLW)\", offer a new, bottom-up pathway for re-architecting microneedle tips to address clogging susceptibility via geometric means. Here, we investigate this potential by 3D printing monolithic 650-µm-tall, 15-µm-diameter hollow microneedles comprising architectural features designed to remediate clogging phenomena: (i) a solid, fine-point tip, (ii) multiple side ports (i.e., perpendicular to the insertion direction), and (iii) an internal microfilter. Serial microinjection experiments with live zebrafish embryos reveal that the 3D microneedles yield enhanced delivery performance without any instances of complete blockages that are pervasive among both standard glass and 3D-printed control microneedles. These findings suggest that DLW-based 3D printing holds distinctive promise for high-precision microinjection applications, particularly in scenarios involving extensive serial injections or critical payloads and targets.</p>","PeriodicalId":18560,"journal":{"name":"Microsystems & Nanoengineering","volume":"11 1","pages":"171"},"PeriodicalIF":9.9,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12426209/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145040604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A soft micron accuracy robot design and clinical validation for retinal surgery.","authors":"Yiqi Chen, Xiangyu Guo, Xin Ye, Tong Jiang, Huan Chen, Jiafeng Yu, Ganglin Yang, Alois Knoll, Di Cui, Mingchuan Zhou, Lijun Shen","doi":"10.1038/s41378-025-01002-5","DOIUrl":"10.1038/s41378-025-01002-5","url":null,"abstract":"<p><p>Retinal surgery is one of the most delicate and complex operations, which is close to or even beyond the physiological limitation of the human hand. Robots have demonstrated the ability to filter hand tremors and motion scaling which has a promising output in microsurgery. Here, we present a novel soft micron accuracy robot (SMAR) for retinal surgery and achieve a more precise and safer operation. A remote center of motion (RCM) parallelogram structure with a double spring adaptive balancing mechanism is designed and optimized to achieve precise motion and safer operation. The deviation from the expected trajectory with manual operation and robot-assisted operation is 143.06 μm ± 91.27 μm vs 26.39 μm ± 13.22 μm, which has been significantly improved}. We evaluated the safety performance of SMAR in live animals. Furthermore, preliminary human clinical trials showed that the robot-assisted has less drift compared to the manual operation with 41.07 μm ± 20.78 μm vs 299.66 μm ± 85.84 μm. The visual acuity with LogMAR of cases showed higher improvement in the robot-assisted group preliminary, which for manual of 0.78 ± 0.44 vs robot-assisted 1.24 ± 0.70 with no statistically significant difference. This study provides promising options for robot-assisted with very experienced surgeons in the most challenging microsurgery. The system has the potential to effectively reduce the training curve of doctors and alleviate the shortage of ophthalmic surgeons, which is very important for rural areas and underdeveloped countries.</p>","PeriodicalId":18560,"journal":{"name":"Microsystems & Nanoengineering","volume":"11 1","pages":"170"},"PeriodicalIF":9.9,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12420835/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145030196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yisheng Dong, Xieyu Chen, Shoujun Zhang, Zhihao Wang, Hongyi Li, Kuan Liu, Guanghong Xu, Quan Xu, Quan Li, Chunmei Ouyang, Tun Cao, Zhen Tian
{"title":"Dynamic dual-mode terahertz device with nonvolatile switching for integrated on-chip and free-space applications.","authors":"Yisheng Dong, Xieyu Chen, Shoujun Zhang, Zhihao Wang, Hongyi Li, Kuan Liu, Guanghong Xu, Quan Xu, Quan Li, Chunmei Ouyang, Tun Cao, Zhen Tian","doi":"10.1038/s41378-025-01020-3","DOIUrl":"10.1038/s41378-025-01020-3","url":null,"abstract":"<p><p>Terahertz communication systems demand versatile devices capable of simultaneously controlling propagating waves and surface plasmon polaritons (SPPs) in far-field (FF) and near-field (NF) channels, yet existing solutions are constrained by volatile operation, single-function limitations, and the inability to integrate NF and FF functionalities. Here, we present a nonvolatile reconfigurable terahertz metasurface platform leveraging the phase-change material Ge<sub>2</sub>Sb<sub>2</sub>Te<sub>5</sub>(GST) to achieve on-demand dual-channel modulation-a first in the terahertz regime. By exploiting the stark conductivity contrast of GST between amorphous and crystalline states, our design enables energy-efficient switching between NF-SPP manipulation and FF-wavefront engineering without requiring continuous power input. Experimental validation demonstrates two devices: Device I dynamically transitions between NF SPP focusing and FF vortex beam generation, while Device II toggles NF anomalous SPP focusing and FF holographic imaging. The metasurface uniquely integrates simultaneous amplitude/phase control for SPPs and free-space waves, overcoming the single-channel limitations of prior works. With reversible switching cycles and nonvolatile state retention (>10 years), this platform bridges the gap between on-chip plasmonics and free-space terahertz technologies, offering transformative potential for applications in 6 G communication, encrypted data storage, and multifunctional metasensors.</p>","PeriodicalId":18560,"journal":{"name":"Microsystems & Nanoengineering","volume":"11 1","pages":"169"},"PeriodicalIF":9.9,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12417551/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145023802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ruoyao Huang, Tingxuan Chen, Ling Zhu, Kwai Hei Li
{"title":"GaN/PDMS-based opto-electro-mechanical tactile sensors.","authors":"Ruoyao Huang, Tingxuan Chen, Ling Zhu, Kwai Hei Li","doi":"10.1038/s41378-025-00998-0","DOIUrl":"10.1038/s41378-025-00998-0","url":null,"abstract":"<p><p>Tactile sensors are crucial in robotics and medical diagnostics, requiring precise real-time detection. However, the development of a compact sensor that can measure force across a wide range, with high resolution and rapid response along three axes, remains extremely limited. Herein, an opto-electro-mechanical tactile sensor is reported, utilizing a monolithically integrated GaN-based optochip with a fingerprint-patterned polydimethylsiloxane (PDMS) film. The sensor exhibits a linear response over a broad measurement range of ±100 mN for shear force and 0-200 mN for normal force, with a detection resolution of 0.07 mN. It also demonstrates fast response and recovery times of 0.85 ms and 0.82 ms, respectively. Experimental verification of its application in surface topography scanning and organ lesion assessment highlights its potential for enhancing robotic perception and medical diagnosis.</p>","PeriodicalId":18560,"journal":{"name":"Microsystems & Nanoengineering","volume":"11 1","pages":"168"},"PeriodicalIF":9.9,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12413446/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145006369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Qincheng Zheng, Ke Cao, Xudong Ma, Ning Deng, Hao Chen, Yulang Cheng, Yao Lu, Huikai Xie
{"title":"SPL and THD improvement of a cantilever-diaphragm piezoelectric MEMS loudspeaker with Double-S actuators.","authors":"Qincheng Zheng, Ke Cao, Xudong Ma, Ning Deng, Hao Chen, Yulang Cheng, Yao Lu, Huikai Xie","doi":"10.1038/s41378-025-01031-0","DOIUrl":"10.1038/s41378-025-01031-0","url":null,"abstract":"<p><p>Piezoelectric MEMS loudspeakers based on cantilever diaphragms have demonstrated promising electroacoustic efficiency and low-frequency sound pressure level (SPL). However, their total harmonic distortion (THD) significantly increases near the first resonant frequency, and high-frequency SPL (above 10 kHz) rapidly decreases due to the resonance frequency and bandwidth limitations, severely affecting sound quality. This work presents a piezoelectric MEMS loudspeaker featuring a 2.7 µm-thick sputtered PZT film, comprising a cantilever diaphragm and four sets of Double-S actuators. The first resonance frequency of the cantilever diaphragm is 3.2 kHz, and the Double-S actuators introduce an additional resonance frequency at 21.3 kHz, addressing the issues of insufficient high-frequency SPL and poor THD performance. Testing on a 711-ear simulator reveals that, under 1-3 Vpp excitation, incorporating the Double-S actuators leads to an average SPL increase of 23 dB and an average THD reduction of 80% that remains below 0.6% across the 3.2-20 kHz range. Thus, both SPL and THD performance in the mid- to high-frequency range are improved. This work paves the way for the development of high-fidelity piezoelectric MEMS loudspeakers, offering new opportunities to improve sound quality and extend the frequency range for in-ear applications.</p>","PeriodicalId":18560,"journal":{"name":"Microsystems & Nanoengineering","volume":"11 1","pages":"167"},"PeriodicalIF":9.9,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12411614/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145000956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}