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| 1 | Nanoimprint lithography for the manufacturing of flexible electronics显示文摘Flexible electronics have received considerable attention in academies and industries for their promising applications in enormous fields, such as flexible displays, wearable sensors, artificial skins, and flexible energy devices. Challenges remain in developing a flexible and scalable manufacturing method to facilitate the fabrication of multi-functional structures in a flexible electronic system. Nanoimprint lithography is a high resolution and low-cost approach to fabricate nanostructures over a large area. This paper reviews recent progress of nanoimprint lithography and its applications in flexible electronics. The basic principles, classification, research focus, and critical issues of nanoimprint lithography are elaborated. Then, the advantages of nanoimprint lithography are demonstrated in several typical applications related to flexible electronics, including conductive films, optoelectronic devices, flexible sensors, energy harvesting and storage devices, and bioinspired electronic devices. Finally,the challenges and perspectives of nanoimprint lithography in flexible electronic systems are discussed. | SHAO JinYou CHEN XiaoLiang LI XiangMing TIAN HongMiao WANG ChunHui LU BingHeng | 2019 | Science China(Technological Sciences)2019，62，2： | 6 |
| 2 | Characterization of uncultivated magnetotactic bacteria from the sediments of Yuehu Lake, China显示文摘Marine magnetotactic bacteria were collected from the intertidal sediments of Yuehu Lake(China), where their abundance reached 103–104 ind./cm3. Diverse morphotypes of magnetotactic bacteria were observed, including cocci and oval, vibrio-, spirillum-, rod-, elliptical-, handle- and bar-shaped forms. The magnetococci were the most abundant, and had flagella arranged in parallel within a bundle. The majority of magnetosomes were arranged in one, two or multiple chains, although irregular arrangements were also evident. All the results of high-resolution transmission electron microscopy(HRTEM) analysis show that magnetosome crystals were composed of Fe3O4, and their morphology was specific to particular cell morphotypes. By the 16 S r RNA gene sequence analysis, we found fourteen operational taxonomic units(OTUs) which were related to magnetotactic bacteria. Among these, thirteen belonged to the Alphaproteobacteria and one to the Gammaproteobacteria.Compared with known axenic and uncultured marine magnetotactic bacteria, the 16 S r RNA gene sequences of most magnetotactic bacteria collected from the Yuehu Lake exhibited sequence identities ranging from 90.1% to96.2%(<97%). The results indicate that microbial communities containing previously unidentified magnetotactic bacteria occur in the Yuehu Lake. | DU Haijian ZHANG Rui ZHANG Wenyan XU Cong CHEN Yiran PAN Hongmiao ZHOU Ke WU Long-fei XIAO Tian | 2017 | Acta Oceanologica Sinica2017，36，2： | 3 |
| 3 | Archaeal community structure in sediments from a seamount in the Mariana Volcanic Arc显示文摘Seamounts are subsurface mountains in the ocean. Examination of the abundance and distribution of Archaea in seamount ecosystems may provide a better understanding of their ecological functions. Most studies of marine archaeal assemblages in seamount area have focused on hydrothermal vents or ferromanganese crusts. We investigated the archaeal communities from a seamount of the Mariana Volcanic Arc, in the tropical western Pacific Ocean by using high-throughput sequencing. Thaumarchaeota was dominant in the sediments of all sample stations. Community diversity and species richness were greatest at stations near the top of the seamount, and lowest at the deepest station. One sample station on the steep southeast slope that faced the Yap-Mariana trench had a unique composition of Archaea. In summary, depth has an important influence on archaeal community structure, and the geographic properties and sediment characteristics may explain the unique distribution patterns of Archaea in this seamount. This study provides a foundation for future research on Archaea in seamounts. | ZHANG Wenyan LIU Jia DONG Yi LI Xuegang XU Cong XIAO Tian PAN Hongmiao WU Long-Fei | 2019 | Journal of Oceanology and Limnology2019，37，4： | 1 |
| 4 | Fabrication of high-aspect-ratio microstruetures using dielectrophoresis-electrocapillary force driven UV-imprinting显示文摘 | Li Xiangming Shao Jinyou Tian Hongmiao | | 0，，： | 1 |
| 5 | Discretely-supported nanoimprint lithography for patterning the high-spatial-frequency stepped surface显示文摘Non-planar morphology is a common feature of devices applied in various physical fields,such as light or fluid,which pose a great challenge for surface nano-patterning to improve their performance.The present study proposes a discretely-supported nanoimprint.lithography(NIL)technique to fabricate nanostructures on the extremely non-planar surface,namely high-spatial-frequency stepped surface.The designed discretely imprinting template implanted a discretely-supported intermediate buffer layer made of sparse pillars arrays.This allowed the simultaneous generation of air-cushion-like buffer and reliable support to the thin structured layer in the template.The resulting low bending stiffness and distributed concentrated load of the template jointly overcome the contact difficulty with a stepped surface,and enable the template to encase the stepped protrusion as tight as possible.Based on the proposed discretely-supported NIL,nanostructures were fabricated on the luminous interface of light emitting diodes chips that covered with micrometer step electrodes pad.About 96%of the utilized indium tin oxide transparent current spreading layer surface on top of the light emitting diode(LED)chips was coated with nanoholes array,with an increase by more than 40%in the optical output power.The excellent ability of nanopatterning a non-planar substrate could potentially lead innovate design and development of high performance device based on discretely-supported NIL. | Chunhui Wang Yu Fan Jinyou Shao Zhengjie Yang Jiaxing Sun Hongmiao Tian Xiangming Li | 2021 | Nano Research2021，14，8： | 1 |
| 6 | Electrohydrodynamic micro-/nanostructuring processes based on prepatterned polymer and prepattemed template 显示文摘 | TIAN Hongmiao SHAO Jinyou Ding Yucheng | 2014 | Macromolecules2014，47，4： | 1 |
| 7 | Gecko-Inspired Slant Hierarchical Microstructure-Based Ultrasensitive Iontronic Pressure Sensor for Intelligent Interaction显示文摘Highly sensitive flexible pressure sensors play an important role to ensure the safety and friendliness during the human-robot interaction process.Microengineering the active layer has been shown to improve performance of pressure sensors.However,the current structural strategy almost relying on axial compression deformation suffers structural stifening,and together with the limited area growth efficiency of conformal interface,essentially limiting the maximum sensitivity.Here,inspired by the interface contact behavior of gecko's feet,we design a slant hierarchical microstructure to act as an electrode contacting with an ionic gel layer,fundamentally eliminating the pressure resistance and maximizing functional interface expansion to achieving ultrasensitive sensitivity.Such a structuring strategy dramatically improves the relative capacitance change both in the low-and high-pressure region,thereby boosting the sensitivity up to 36000kPa^(-1) and effective measurement range up to 30okPa.To verify the advantages of high sensitivity,the sensor is integrated with a soft magnetic robot to demonstrate a biomimetic Venus flytrap.The ability to perceive weak stimuli allows the sensor to be used as a sensory and feedback window,realizing the capture of small live insects and the transportation of fragile objects. | Yongsong Luo Xiaoliang Chen Hongmiao Tian Xiangming Li Yangtianyu Lu Yang Liu Jinyou Shao | 2022 | Research2022，，4： | 0 |
| 8 | Electric-driven flexible-roller nanoimprint lithography on the stress-sensitive warped wafer显示文摘Surface nanopatterning of semiconductor optoelectronic devices is a powerful way to improve their quality and performance.However,photoelectric devices’inherent stress sensitivity and inevitable warpage pose a huge challenge on fabricating nanostructures large-scale.Electric-driven flexible-roller nanoimprint lithography for nanopatterning the optoelectronic wafer is proposed in this study.The flexible nanoimprint template twining around a roller is continuously released and recovered,controlled by the roller’s simple motion.The electric field applied to the template and substrate provides the driving force.The contact line of the template and the substrate gradually moves with the roller to enable scanning and adapting to the entire warped substrate,under the electric field.In addition,the driving force generated from electric field is applied to the surface of substrate,so that the substrate is free from external pressure.Furthermore,liquid resist completely fills in microcavities on the template by powerful electric field force,to ensure the fidelity of the nanostructures.The proposed nanoimprint technology is validated on the prototype.Finally,nano-grating structures are fabricated on a gallium nitride light-emitting diode chip adopting the solution,achieving polarization of the light source. | Yu Fan Chunhui Wang Jiaxing Sun Xiaogang Peng Hongmiao Tian Xiangming Li Xiaoliang Chen Xiaoming Chen Jinyou Shao | 2023 | International Journal of Extreme Manufacturing2023，5，3： | 0 |
| 9 | How light affect the magnetotactic behavior and reproduction of ellipsoidal multicellular magnetoglobules?显示文摘Magnetotactic bacteria(MTB)synthesize intracellular magnetic organelles,magnetosomes,which consist of magnetic crystals that are enveloped in a membrane.Magnetosomes are organized into a chain(s)and confer on cells a magnetic dipolar moment.This magnetic property allows MTB cells to align and swim along geomagnetic field lines,a movement referred to as magnetotaxis.Some MTB species change their swim direction in response to illumination by UV,violet and blue light.Here we analyzed the polarity of morphology,magnetism,and motion in Mediterranean multicellular magnetotactic prokaryotes,also called,magnetoglobules or MMP.The magnetoglobules were assembled from 60-80 cells into an asymmetric ellipsoidal morphology with a relative narrow and large end.They swam dominantly northward,parallel to the direction of the magnetic field,with the narrow-end as the leading side.In response to a reversal in the direction of the magnetic field,they aligned quickly along the magnetic field lines and kept swimming northward.Interestingly,under constant illumination,385-nm UV light,magnetoglobules changed their swimming direction southward anti-parallel to the direction of the magnetic field,with the large-end as the leading side.The change from a northward to southward direction occurred along with an increase of swimming speed.A minimum of 35-mW/cm^(2) irradiance of UV light was sufficient to trigger the swimming re-orientation.UV radiation also triggered the unidirectional division of magnetoglobules.Together these results revealed a coordination of the polarity of magnetoglobule morphology,magnetic moment,and swimming orientation,in response to magnetic and optical stimuli.The UV triggered the reversal of magnetotaxis and magnetoglobule division indicating the ecological significance of light for multicellular magnetotactic prokaryotes. | Xinxin QIAN Yicong ZHAO Claire-Lise SANTINI Hongmiao PAN Tian XIAO Haitao CHEN Tao SONG Jinhua LI Francois ALBERTO Sophie BRUSTLEIN Long-Fei WU | 2021 | Journal of Oceanology and Limnology2021，39，6： | 0 |
| 10 | Characterization and diversity of magnetotactic bacteria from sediments of Caroline Seamount in the Western Pacific Ocean显示文摘Magnetotactic bacteria(MTB)are a group of microorganisms capable of orientating and swimming along magnetic fields because they contain intracellular biomineralized magnetosomes composed of magnetite(Fe 3 O 4)or/and greigite(Fe_(3)S_(4)).They are ubiquitous in freshwater,brackish,and marine habitats,and are cosmopolitan in distribution.However,knowledge of their occurrence and distribution in seamount ecosystems is limited.We investigated the diversity and distribution of MTB in the Caroline Seamount(CM4).The abundance of living MTB in 12 stations in depth varying from 90 to 1545 m was 1.1×10^(3)-43.7×10^(3) inds./dm 3.Despite diverse shapes of MTB observed,magnetotactic cocci were the dominant morphotype and could be categorized into two types:1)typical cocci that appeared to have peritrichous fl agella;and 2)those characterized by having a drop-shaped form and one bundle of fl agella located at the thin/narrow end of the cell.Transmission electron microscopy(TEM)analysis revealed that the magnetosomes formed by those magnetotactic cocci are magnetite(Fe 3 O 4)with octahedral crystal habit.A total of 41 operational taxonomic units(OTUs)of putative MTB(2702 reads)were acquired from nine stations,based on high-throughput sequencing.Of these,40 OTUs belonged to the Proteobacteria phylum and one belonged to the Nitrospirae phylum.We found apparent connectivity between the MTB populations on the Caroline and Kexue(Science in Chinese)seamounts,although the diversity of MTB on Caroline was much richer than on the Kexue Seamount.Our results imply that the unique topography of seamounts and other as-yet unclear environmental factors could lead to evolution of different fl agella arrangements in magnetotactic cocci,and the occurrence of octahedral magnetite magnetosomes. | Kaixuan CUI Wenyan ZHANG Jia LIU Cong XU Yicong ZHAO Si CHEN Hongmiao PAN Tian XIAO Long-Fei WU | 2021 | Journal of Oceanology and Limnology2021，39，6： | 0 |
| 11 | Observations on a magnetotactic bacteria-grazing ciliate in sediment from the intertidal zone of Huiquan Bay,China显示文摘Magnetotactic bacteria(MTB)are a group of prokaryotes having the ability to orient and swim along geomagnetic field lines because they contain intracellular magnetosomes that are synthesized through a biomineralization process.Magnetosomes have recently also been found in unicellular eukaryotes,which are referred to as magnetically responsive protists(MRPs).The magnetosomes have three origins in MRPs.In this study,we characterized a MTB-grazing ciliated MRP that was magnetically collected from intertidal sediment of Huiquan Bay,Qingdao,China.Based on 18S rRNA gene sequence analysis,the ciliated MRP was tentatively identified as Uronemella parafi lificum HQ.Using transmission electron microscopy,we observed that magnetosomes having 2-3 shapes were randomly distributed within this ciliate.Energydispersive X-ray spectroscopy and high-resolution transmission electron microscopy images of the magnetosomes were consistent with them being composed of magnetite.Magnetosomes having the same shape and mineral composition were also detected in MTB that occurred in the same environment as the ciliated MRP.Statistical analysis showed that the size and shape of the magnetosomes in the ciliated MRP were similar to those in MTB.The results suggest that this ciliated MRP can graze,ingest,and digest various types of MTB.It is certainly worth noting that this is the first record of MRPs in Asian aquatic sediment and suggesting they might be widely distributed.These results also support the assertion that MRPs probably contribute to the ecological cycles of iron,and expand possibilities for research into the mechanism of magnetoreception in eukaryotes. | Si CHEN Kaixuan CUI Wenyan ZHANG Yicong ZHAO Tian XIAO Hongmiao PAN Wuchang ZHANG Long-Fei WU | 2021 | Journal of Oceanology and Limnology2021，39，6： | 0 |
| 12 | Genomic analysis of a pure culture of magnetotactic bacterium Terasakiella sp.SH-1显示文摘Magnetotactic bacteria(MTB)display magnetotaxis ability because of biomineralization of intracellular nanometer-sized,membrane-bound organelles termed magnetosomes.Despite having been discovered more than half a century,only a few representatives of MTB have been isolated and cultured in the laboratory.In this study,we report the genomic characterization of a novel marine magnetotactic spirillum strain SH-1 belonging to the genus Terasakiella that was recently isolated.A gene encoding haloalkane dehalogenase,which is involved in the degradation of chlorocyclohexane,chlorobenzene,chloroalkane,and chloroalkene,was identified.SH-1 genome contained cysCHI and soxBAZYX genes,thus potentially capable of assimilatory sulfate reduction to H_(2)S and using thiosulfate as electron donors and oxidizing it to sulfate.Genome of SH-1 also contained genes encoding periplasmic dissimilatory nitrate reductases(napAB),assimilatory nitrate reductase(nasA)and assimilatory nitrite reductases(nasB),suggesting that it is capable of gaining energy by converting nitrate to ammonia.The pure culture of Terasakiella sp.SH-1 together with its genomic results off ers new opportunities to examine biology,physiology,and biomineralization mechanisms of MTB. | Haijian DU Wenyan ZHANG Wei LIN Hongmiao PAN Tian XIAO Long-Fei WU | 2021 | Journal of Oceanology and Limnology2021，39，6： | 0 |
| 13 | A flexible dual-function capacitive sensor enhanced by looppatterned fibrous electrode and doped dielectric pillars for spatial perception显示文摘The integrated perception capable of detecting and monitoring varieties of activities is one of the ultimate purposes of wearable electronics and intelligent robots.Limited by the space occupation,it lacks practical feasibility to stack multiple types of single sensors on each other.Herein,a high-sensitivity dual-function capacitive sensor with proximity sensing and pressure sensing is proposed.The fringing electric field can be confined in the proximity-sensitive area by fibrous loop-patterned electrode,leading to more stolen charges when object approaching and thus a high proximity sensitivity.The high-permittivity doped structured dielectric layer reduces the compressive stiffness and enhances the rate of compression-caused increase in the equivalent relative permittivity of the dielectric layer,resulting in a larger increase in capacitance and thus a high pressure sensitivity.The electrodes and dielectric layer together compose the capacitor and act as the sensor without taking up additional space.The decoupling of proximity-sensing and pressure-sensing modes can be achieved by decrease or increase in capacitance.Combined with array distribution and sequential scanning,the sensors can be used for detection of motion trajectory,contour recognition,pressure distribution. | Yongsong Luo Xiaoliang Chen Xiangming Li Hongmiao Tian Liang Wang Jinyou Shao | 2023 | Nano Research2023，16，5： | 0 |
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