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Frontiers of Environmental Science & Engineering 2011年第4期5卷 615-622页

作者： Xinhua WANG Jingmei LI Xiufen LI Guocheng DU Laboratory of Environmental Biotechnology School of Environmental and Civil EngineeringJiangnan UniversityWuxi 214122China Key Laboratory of Industrial Biotechnology Ministry of EducationJiangnan UniversityWuxi 214122China

Among the numerous parameters affecting the membrane bioreactor(MBR)performance,the aeration intensity is one of the most important *** the present investigation,an anoxic/aerobic-type(A/O-type)sequencing batch MBR system,added anoxic process as a pretreatment to improve the biodegradability of azo dye wastewater,was investigated under different aeration intensities and the impact of the aeration intensity on effluent quantity,sludge properties,extracellular polymeric substances(EPS)amount generated as well as the change of permeation flux were *** lower nor higher aeration intensities could improve A/O-type sequencing batch MBR *** results showed 0.15 m^(3)·h^(-1)aeration intensity was promising for treatment of azo dye wastewater under the conditions *** this aeration intensity,chemical oxygen demand(COD),ammonium nitrogen and color removal as well as membrane flux amounted to 97.8%,96.5%,98.7%and 6.21 L·m^(-2)·h^(-1),*** effluent quality,with 25.0 mg·L^(-1)COD,0.84 mg·L^(-1)ammonium nitrogen and 8 chroma,could directly meet the reuse standard in *** the meantime,the sludge relative hydrophobicity,the bound EPS,soluble EPS and EPS amounts contained in the membrane fouling layer were 70.3%,52.0 mg·g^(-1)VSS,38.8 mg·g^(-1)VSS and 90.8 mg·g^(-1)VSS,respectively,which showed close relationships to both pollutant removals and membrane flux.

关键词： batch membrane bioreactor azo dye aeration intensity extracellular polymeric substances sludge properties

Bio-inspired flexible artificial synapses for pain perception and nerve injuries

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npj Flexible Electronics 2020年第1期4卷 28-35页

作者： Qifeng Lu Fuqin Sun Lin Liu Lianhui Li Mingming Hao Zihao Wang Ting Zhang i-lab Key Laboratory of multifunctional nanomaterials and smart systemsSuzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of Sciences(CAS)398 Ruoshui Road215123 SuzhouPeople’s Republic of China Department of Health and Environmental Sciences Xi’an Jiaotong Liverpool University111 Ren’ai Road215123 SuzhouPeople’s Republic of China

Imitation of the perception system of living creatures is of great importance for the construction of artificial nerves and intelligent human-machine ***,a prominent challenge is to emulate the functions of the biological synapse,which is the basic building block of the neural ***,inspired by the pain perception mechanism of the living creatures,a flexible double-layer memristor was constructed,with 90%semiconducting single-wall carbon nanotubes(s-SWCNTs)covered by LiClO4 doped polyoxyethylene oxide(PEO:LiClO4)as the channel *** carriers(protons and Li+)from PEO:LiClO4 imitated the functions of Na+and K+in biological systems.A potentiation of the post-synaptic signal was observed with mild stimuli,while the post-synaptic signal was inhibited with severe stimuli with a pulse voltage larger than 1.4 V in this *** behaviors resemble the sensation of pain,neuroprotection,and possible injuries to the neural *** explore the underlying mechanism of the phenomenon,the fourier-transform infrared spectroscopy(FTIR),X-ray photoelectron spectroscopy(XPS),Raman spectrum,and current(IV)sweep were carried *** was inferred that the observed results are attributable to the interaction between carriers in PEO:LiClO4 and functional groups and defects in the *** enhanced channel current results from the fulfillment of the traps by the carriers,and the suppression of the current is due to the intercalation of Li+in the *** flexible artificial synapse opens a new avenue for the construction of biocompatible electronic devices towards artificial intelligence systems.

关键词： materials artificial injuries

Biological receptor-inspired flexible artificial synapse based on ionic dynamics

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Microsystems & Nanoengineering 2020年第1期6卷 507-516页

作者： Qifeng Lu Fuqin Sun Lin Liu Lianhui Li Yingyi Wang Mingming Hao Zihao Wang Shuqi Wang Ting Zhang i-Lab Key Laboratory of Multifunctional Nanomaterials and Smart SystemsSuzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of Sciences(CAS)398 Ruoshui Road215123 SuzhouPR China Department of Health and Environmental Sciences Xi’an Jiaotong Liverpool University111 Ren’ai Road215123 SuzhouPR China Center for Excellence in Brain Science and Intelligence Technology Chinese Academy of Sciences200031 ShanghaiPR China

The memristor has been regarded as a promising candidate for constructing a neuromorphic computing platform that is capable of confronting the bottleneck of the traditional von Neumann ***,inspired by the working mechanism of the G-protein-linked receptor of biological cells,a novel double-layer memristive device with reduced graphene oxide(rGO)nanosheets covered by chitosan(an ionic conductive polymer)as the channel material is *** protons in chitosan and the functional groups in rGO nanosheets imitate the functions of the ligands and receptors of biological cells,*** changes in the response current depending on the historical applied voltages are observed,offering a promising pathway toward biorealistic synaptic *** memristive behavior is mainly a result of the interaction between protons provided by chitosan and the defects and functional groups in the rGO *** channel current is due to the hopping of protons through functional groups and is limited by the traps in the rGO *** transition from short-term to long-term potentiation is achieved,and learning-forgetting behaviors of the memristor mimicking those of the human brain are ***,the bioinspired memristor-type artificial synaptic device shows great potential in neuromorphic networks.

关键词： artificial offering dynamics

Stretchable,self-healing,transient macromolecular elastomeric gel for wearable electronics

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Microsystems & Nanoengineering 2019年第1期5卷 583-592页

作者： Mingming Hao Lianhui Li Shuqi Wang Fuqin Sun Yuanyuan Bai Zhiguang Cao Chunyan Qu Ting Zhang i-Lab Key Laboratory of multifunctional nanomaterials and smart systemsSuzhou Institute of Nano-tech and Nano-bionicsChinese Academy of Sciences215123 SuzhouChina Nano Science and Technology Institute University of Science and Technology of China96 Jinzhai Road230026 HefeiAnhuiChina

Flexible and stretchable electronics are emerging in mainstream technologies and represent promising directions for future *** stretchable materials with a self-healing ability to resist mechanical damage are highly desirable but remain challenging to ***,we report a stretchable macromolecular elastomeric gel with the unique abilities of not only self-healing but also transient properties at room *** inserting small molecule glycerol into hydroxyethylcellulose(HEC),forming a glycerol/hydroxyethylcellulose(GHEC)macromolecular elastomeric gel,dynamic hydrogen bonds occur between the HEC chain and the guest small glycerol molecules,which endows the GHEC with an excellent stretchability(304%)and a self-healing ability under ambient ***,the GHEC elastomeric gel is completely water-soluble,and its degradation rate can be tuned by adjusting the HEC molecular weight and the ratio of the HEC to *** demonstrate several flexible and stretchable electronics devices,such as self-healing conductors,transient transistors,and electronic skins for robots based on the GHEC elastomeric gel to illustrate its multiple functions.

关键词： healing transient wear