npj Flexible Electronics
·
2024
·Vol. 8
·期 1
·1-10
·
IF 12.3
Deng Hai-Tao,Xia Yi-Xuan,Liu Yu-Chi,Kim Beomjoon,Zhang Xiao-Sheng
Multifunctional integration and heterogeneous surface integration are two crucial challenges in the in-depth use and development of triboelectric nanogenerators (TENGs) in the wearable electronic field. A promising solution is to develop stretchable TENGs (STENG), which have the potential for microenergy supply and self-powered sensing. The key challenge is to endow its functional components with good deformability and realize heterogeneous surface integration. Herein, we proposed a fully stretchable, surface adaptable TENG using stretchable micro-nano hierarchical friction interfaces. It integrated microenenrgy supply and multifunctional self-powered sensing (i.e., bend, force, and frequency sensing) abilities successfully. The highly-linear sensing abilities endows the STENG with a good biometric ability. As an application, a STENG array based-stretchable wearable keyboard was proposed. It identified dynamic keystroke motions of all users with a Support Vector Machine, with a high accuracy of 93.21%. Besides, the intruders who were not sampled were distinguished from users, with an accuracy of 81.50%.
研究领域:
材料科学
·
电子工程
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 32
·期 49
·2206705
·
IF 19.924
Lili Wang,Wanbo Li,Yuxin Song,Wanghuai Xu,Yuankai Jin,Chao Zhang,Zuankai Wang
Developing robust technologies to harvest energy from ambient environments is critical to applications in self-powered electronics. As a promising candidate, droplet-based electricity generators with transistor-inspired architecture, which consist of electrodes and dielectric material, have manifested superior capacity to gain sustainable energy from water. Despite extensive achievement, these devices are significantly limited by insufficient flexibility and unstable performance owing to the presence of inevitable mechanical abrasion, chemical corrosion, and interfacial detachment of electrode and dielectric material. Here, a facile approach is reported to construct a monolithic integrated droplet-based electricity generator (MI-DEG) device that enables high flexibility and robust electrical performance. The key to such flexibility and robustness of the MI-DEG device lies in the meticulous utilization of a thermal fusion strategy that makes specially-designed polymer electrodes and dielectric material seamlessly integrated together. It is demonstrated that MI-DEG exhibits stable electrical output with negligible attenuation under long-term mechanical deformation and abrasion, as well as retains over 60% of initial electrical output under harsh corrosive environments, as opposed to the complete failure of conventional counterpart. This study provides a hopeful pathway for the rational design of flexible and robust electricity generator, making it a step closer in the practical applications.
研究领域:
能源材料
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纳米技术
·
电子工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Xiong Ke,Tuo Wei,Gengrui Wei,Acong Chen,Xiaoqian Cheng,Zemin Li,Zhi Qin,Zijun Pang,Jiamin Pan,Yao Chen,Cong Wei,Xianghong Guan,Xuguang He,Guanglei Qiu,Haizhen Wu,Chaohai Wei
The wastewater from coke making is characterized by high toxicity, high concentration of pollutants and complex composition. Therefore, it is difficult to treat using conventional methods such as advanced oxidation and ion exchange processes. In this study, a zero-discharge integrated process (ZDIP) composed of pre-physicochemical – oxic – hydrolytic & denitrification – oxic – post-physicochemical (A/O/H/O/A) biological, pre-processing, membrane and end-processing units was created to treat coking wastewater. The results showed that most of the chemical oxygen demand, sulfide, cyanide and NH 4 + -N in the coking wastewater were removed in A/O/H/O/A biochemical unit. Hardness, F − and turbidity were further eliminated in the pre-processing unit, while more than 98 % of the effluent was reused in the membrane unit. Finally, zero discharge treatment of residual liquid and sludge was realized in the end-processing unit. The operating cost was about 2.49 USD/m 3 and the carbon emissions 9.17 kg CO 2 -eq/m 3 of influent for the entire ZDIP. Theoretically, the ZDIP based on hierarchical cycle drive, which is applicable to handling complex wastewaters, cutting carbon emissions and recycling water, can be taken as an effective wastewater treatment process in the next decade.
研究领域:
环境工程
·
废水处理
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Haiqing Zhu,Yumiao Su,Junfeng Li,Yulin Ding,Minyu Li,Wenmu Li
It is of significance to develop a photosensitive polyimide for the demand of further integration and miniaturization of integrated circuits. In the current work, the rigid benzimidazolone-derived diamines and the corresponding photosensitive polyhydroxyimide were successfully developed. All polyimides exhibit excellent processability and comprehensive physical properties. Especially, our fluorinated polyhydroxyimide has all the desirable properties for a patterning process which includes high glass transition temperature (369 °C), low dielectric constant (2.94 at 1 MHz), and excellent optical transparency (λcutoff as low as 332 nm). Based on this fluorinated polyhydroxyimide, our photosensitive polyimide has a sensitivity of 172 mJ cm–2 and a contrast of 4.2, and fine positive patterns with resolutions of 5 and 10 μm were achieved. This provides a feasible framework for expanding the application of benzimidazolone polyimide.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2020
·Vol. 11
·期 1
·1-7
·
IF 12.121
Chen Mao-Lin,Sun Xingdan,Liu Hang,Wang Hanwen,Zhu Qianbing,Wang Shasha,Du Haifeng,Dong Baojuan,Zhang Jing,Sun Yun,Qiu Song,Alava Thomas,Liu Song,Sun Dong-Ming,Han Zheng
Since its invention in the 1960s, one of the most significant evolutions of metal-oxide-semiconductor field effect transistors (MOS-FETs) would be the three dimensionalized version that makes the semiconducting channel vertically wrapped by conformal gate electrodes, also recognized as FinFET. During the past decades, the width of fin ( W \({}_{{\rm{fin}}}\) ) in FinFETs has shrunk from about 150 nm to a few nanometers. However, W \({}_{{\rm{fin}}}\) seems to have been levelling off in recent years, owing to the limitation of lithography precision. Here, we show that by adapting a template-growth method, different types of mono-layered two-dimensional crystals are isolated in a vertical manner. Based on this, FinFETs with one atomic layer fin are obtained, with on/off ratios reaching \(\sim\!\! 10^{7}\) . Our findings push the FinFET to the sub 1 nm fin-width limit, and may shed light on the next generation nanoelectronics for higher integration and lower power consumption.
研究领域:
半导体物理
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2016
·
IF 3.299
Peng Huang,Qing Zhang,Hongye Pan,Lianjun Luan,Xuesong Liu,Yongjiang Wu
In the present study, integrated extraction-adsorption process was developed and applied to extract and purify total flavonoids from Scutellariae barbatae herba. Screening of macroporous resins, single factor experiments, an experimental design based on Box-Behnken design (BBD) and purification conditions study were carried out to optimize the integrated process. DM130 resin was chosen as adsorbent and the optimal extraction-adsorption conditions were determined as pH of extraction solvent 2, time 9 h, liquid/solid ratio 20:1 mL/g and flow rate 7 BV/h. 70% (5 BV) ethanol aqueous solution was selected as elution solvent. Through this procedure, the total flavonoids of Scutellariae barbatae herba can be totally extracted using water as extraction solvent rather than high concentration ethanol was used in traditional extraction method. Moreover, the integrated process can simplify operation, reduce energy consumption, and prevent the degradation of bioactive substances, thus improve the quality of products. Compared to the conventional method, the recovery yield and purity of total flavonoids obtained from this procedure increased by 1.50 and 1.16 times respectively. The results showed that the integrated procedure can be efficient and eco-friendly, as well as appropriate for large-scale extraction and purification of total flavonoids from Scutellariae barbatae herba .
研究领域:
中药学
·
天然产物化学
✓ 已验证
DOI
高影响因子
LAB ON A CHIP
·
2024
·Vol. 24
·期 4
·896-903
·
IF 6.1
Qian Li,Pan Zhang,Zi Ye,Huimin Zhang,Xiao Sun,Lin Gui
The application of liquid metal in a microfluidic system enables the fabrication of highly integrated on-chip electroosmotic micropumps (EOPs). In this work, a low-voltage driveable integrated parallel EOP cluster drive system is proposed. This system consists of two layers, a branch-channel layer and a trunk-channel layer. The lower branch-channel layer contains separate parallel pumping channels and a pair of comb liquid metal electrodes. The separated branch channels are connected together through the trunk channels in the upper layer. With this structural arrangement, the parallel micropumps form an integrated micropump cluster for larger pumping capacity. The distance between the pumping channel and the electrode next to it is controlled to 20 μm. To guide the pump design, parametric studies are performed and fully discussed. According to the experimental results, the micropump cluster can be driven at a low voltage of 0.5 V, and the flow rate reaches 274 nL min−1 at 5 V. In addition, the paper finally proposes an electrode protection strategy and an integrated pump-valve drive system which is expected to solve the shortcoming of electroosmotic pumps in terms of long-time storage and driving.
CAS / MDL:
研究领域:
微纳米技术
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TALANTA
·
2017
·
IF 4.162
Yan Xiong,Jiayi Wu,Qing Wang,Jing Xu,Shenwen Fang,Jie Chen,Ming Duan
In this work, a miniaturized optical sensor was developed for fluoride determination in tea samples to evaluate their specific risks of fluorosis for public health based on evanescent-wave interaction. The sensor design was integrated on the optical fiber by utilizing the evanescent wave produced on the fiber surface to react with sensing reagents. According to the absorption change at 575 nm, fluoride could be determined by colorimetric method and evaluated by Beer's law. With improved performances of small detection volume (1.2 μL), fast analysis (0.41 min), wide linear range (0.01–1.4 mg L −1 ), low detection limit (3.5 μg L −1 , 3σ) and excellent repeatability (2.34%), the sensor has been applied to fluoride determination in six different tea samples. Conventional spectrophotometry and ion chromatography were employed to validate the sensor's accuracy and potential application. Furthermore, this sensor fabrication provided a miniaturized colorimetric detection platform for other hazardous species monitoring based on evanescent wave interaction.
研究领域:
分析化学
·
环境科学
·
公共健康
✓ 已验证
产品关联
DOI
PubMed
高影响因子
European Journal of Wood and Wood Products
·
2024
·
IF 2.4
Liu Caimei,Xizhi Wu,Li Xianjun,Liu Xiubo
Bamboo is comprised of parenchyma and vascular bundles, which contain vessels, sieve tubes, and fiber cells exhibiting numerous cavities or loose structures. Bamboo bundles undergo a series of mechanical rolling and disintegration processes to transform them into longitudinally continuous and transversely separated bamboo bundles and there is still a significant amount of vascular bundles and parenchyma that remain undissociated. Partial vessels, sieve tubes, and a majority of the parenchyma cell cavities are still discernible in the bamboo scrimber through the process of hot pressing, which significantly diminishes properties of bamboo scrimber, such as the strength, rigidity, and the water resistance. Therefore, this paper presented a new type of bamboo scrimber made from refined bamboo bundles, which is called high-density bamboo scrimber. That is, based on conventional bamboo bundles, a small amount of NaOH was employed to selectively eliminate a portion of the hemicellulose and soften bamboo bundles. Subsequently, a mechanical hammering technique was employed to disintegrate the bamboo bundles into single vascular bundles and surrounding parenchyma. This process increased the resin infiltration pathways and a multi-scale bonding interface structure was formed, and the densification and physical properties of the bamboo scrimber were improved. In high-density bamboo scrimber, the fiber cells maintained their original structural morphology, while the vessel cells and parenchyma cells were completely compacted, resulting in indistinguishable cell contours, and there was no discernible demarcation between the vascular bundles and parenchyma. Compared to ordinary bamboo scrimber, the bending strength, bending modulus, and maximum displacement of high-density bamboo scrimber exhibited a significant increase of 40.1%, 37.3%, and 18.2% respectively. The water resistance, surface roughness after sanding, and mildew resistance of this particular bamboo scrimber were better than those of ordinary bamboo scrimber. High-density bamboo scrimber exhibited a broader spectrum of applications within architectural structures.
研究领域:
材料科学
·
林业工程
✓ 已验证
产品关联
DOI
高影响因子
Light-Science & Applications
·
2023
·Vol. 12
·期 1
·1-10
·
IF 19.4
Li Yanhao,Jiang Xiong,Chen Yimu,Wang Yuhan,Wu Yunkai,Yu De,Wang Kaiyang,Bai Sai,Xiao Shumin,Song Qinghai
Acquiring real-time spectral information in point-of-care diagnosis, internet-of-thing, and other lab-on-chip applications require spectrometers with hetero-integration capability and miniaturized feature. Compared to conventional semiconductors integrated by heteroepitaxy, solution-processable semiconductors provide a much-flexible integration platform due to their solution-processability, and, therefore, more suitable for the multi-material integrated system. However, solution-processable semiconductors are usually incompatible with the micro-fabrication processes. This work proposes a facile and universal platform to fabricate integrated spectrometers with semiconductor substitutability by unprecedently involving the conjugated mode of the bound states in the continuum (conjugated-BIC) photonics. Specifically, exploiting the conjugated-BIC photonics, which remains unexplored in conventional lasing studies, renders the broadband photodiodes with ultra-narrowband detection ability, detection wavelength tunability, and on-chip integration ability while ensuring the device performance. Spectrometers based on these ultra-narrowband photodiode arrays exhibit high spectral resolution and wide/tunable spectral bandwidth. The fabrication processes are compatible with solution-processable semiconductors photodiodes like perovskites and quantum dots, which can be potentially extended to conventional semiconductors. Signals from the spectrometers directly constitute the incident spectra without being computation-intensive, latency-sensitive, and error-intolerant. As an example, the integrated spectrometers based on perovskite photodiodes are capable of realizing narrowband/broadband light reconstruction and in-situ hyperspectral imaging.
研究领域:
光学工程
·
半导体器件
·
生物医学光子学
✓ 已验证
DOI
高影响因子
Polymers
·
2020
·Vol. 12
·期 6
·1369
·
IF 3.426
Shaoqiu Ke,Zhiqi Wang,Kai Zhang,Fangchao Cheng,Jianping Sun,Nannan Wang,Yanqiu Zhu
With the continuous development of energy storage devices towards sustainability and versatility, the development of biomass-based multi-functional energy storage devices has become one of the important directions. In this study, a symmetric dual-function supercapacitor was constructed based on a cellulose network/polyacrylamide/polyaniline (CPP) composite hydrogel. The presented supercapacitor, with excellent electrochemical performance and an areal capacitance of 1.73 mF/cm2at 5 mV/s, an energy density of 0.62 µW h/cm2at a power density of 7.03 µW/cm2, a wide electrochemical window of 1.6 V and a promising cycling stability, can be achieved. The transmittance of the supercapacitor at 500 nm decreased by 9.6% after the electrification at 3 V, and the device can exhibit periodic transmittance change under the square potential input between 0.0 V and 3.0 V at regular intervals of 10 s. The present construction strategy provides a basis for the preparation of multifunctional devices with natural renewable materials and structures.Keywords:cellulose network;polyaniline;electrochromic supercapacitor;integrated structure
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
PubMed
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2012
·Vol. 14
·期 17
·6119-6125
·
IF 3.573
Zhaolai Chen,Jing Li,Xue Zhang,Zhennan Wu,Hao Zhang,Haizhu Sun,Bai Yang
Creation of nanoparticle (NP) architectures via a self-assembly strategy is the current means to integrate and/or modulate the functionalities of NPs. In this paper, we demonstrate the capability for constructing NP spherical superstructures through the specific interaction between host and guest molecules, for instance the model system of α-cyclodextrin (α-CD) and oleic acid (OA), which are decorated on two different NPs beforehand. Subsequently, the OA-decorated hydrophobic NPs are dispersed in hexane, whereas the α-CD-decorated NPs are dispersed in water. The blending of these two immiscible solutions produces NP binary superstructures because of the multiple linkages between the α-CD- and OA-decorated NPs. Control experiments indicate that the self-assembly of NPs occurs either at the hexane/water interface to form hybrid films or in the aqueous phase to generate spherical architectures, which strongly depends on the amount and the size of α-CD-decorated NPs. The high ratio and small size of the α-CD-decorated NPs facilitate the formation of spherical architectures. Competitive experiments with the addition of host α-CD and guest sodium oleate clearly confirm that the main driving force for the NP co-assembly is the specific interaction between α-CD and OA. In addition, the flexible decoration of α-CD and OA on the NPs makes the current strategy generally applicable for a variety of NPs, such as the superstructures of Au/Fe3O4, Pt/Fe3O4, and Au/NaYF4:Yb,Tm, which is expected to promote the further application of NPs in environmental and biological sciences.
研究领域:
材料科学
·
生物学
·
纳米技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）