检索结果-南通市图书馆

The effects of coil-stretch transition behavior of polyfluorene inks on single droplet formation during inkjet printing

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2020年第12期31卷 3216-3220页

作者： Zhonghui Du Hang Zhou Weiran Cao Xinhong Yu Yanchun Han Shenzhen Key lab of Thin Film Transistor and Advanced Display Peking Umiverity Sshenzhen Craduate chool Peking UniversityShenzhen 518055China Shenzhen China star Optoelectronic Semiconductor Display Technology Co. Ltd.Shenzhen518132 China State Key laboratory of Polymer Physics and Chermistry Changchun Iistitute of Appied ChemistryChinese Academy of Scences.Chngzchun 130022China

For drop-on-demand(DOD)inkjet printing,stable and single ink droplet fo rmation without satellite dots is the key to improve the print *** formation of stable and single droplet is influenced by filament break up and the polymer chain’s coil-stretch transition *** this paper,the droplet formation behaviors of polyfluorene(PFO)ink at various driving voltages(V),polymer chain’s coil-stretch transition mechanism and its effects on single ink droplet formation are *** indicates that when 5863 V,Wi>0.5,the PFO molecular chain is stretched because of the high hydrodynamic forces,resulting unwanted satellite *** 55

关键词： Driving voltage Polyfluorene Single droplet Satellite droplets Coil-stretch

Cavity-agnostic acoustofluidic manipulations enabled by guided flexural waves on a membrane acoustic waveguide actuator

在线全文

学校读者我要写书评

暂无评论

Microsystems & Nanoengineering 2024年第2期10卷 153-171页

作者： Philippe Vachon Srinivas Merugu Jaibir Sharma Amit Lal Eldwin J.Ng Yul Koh Joshua E.-Y.Lee Chengkuo Lee Department of Electrical and Computer Engineering National University of SingaporeSingaporeSingapore Institute of Microelectronics Agency for ScienceTechnology and Research(A*STAR)SingaporeSingapore SonicMEMS laboratory School of Electrical and Computer EngineeringCornell UniversityIthacaNYUSA School of Electrical and Data Engineering University of Technology SydneyUltimoNSWAustralia

This article presents an in-depth exploration of the acoustofluidic capabilities of guided flexural waves(GFWs)generated by a membrane acoustic waveguide actuator(MAWA).By harnessing the potential of GFWs,cavity-agnostic advanced particle manipulation functions are achieved,unlocking new avenues for microfluidic systems and lab-on-a-chip *** localized acoustofluidic effects of GFWs arising from the evanescent nature of the acoustic fields they induce inside a liquid medium are numerically investigated to highlight their unique and promising *** traditional acoustofluidic technologies,the GFWs propagating on the MAWA’s membrane waveguide allow for cavity-agnostic particle manipulation,irrespective of the resonant properties of the fluidic ***,the acoustofluidic functions enabled by the device depend on the flexural mode populating the active region of the membrane *** demonstrations using two types of particles include in-sessile-droplet particle transport,mixing,and spatial separation based on particle diameter,along with streaming-induced counter-flow virtual channel generation in microfluidic PDMS *** experiments emphasize the versatility and potential applications of the MAWA as a microfluidic platform targeted at lab-on-a-chip development and showcase the MAWA’s compatibility with existing microfluidic systems.

关键词： waveguide fluid cavity

3D printed fiber sockets for plug and play micro-optics

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Extreme Manufacturing 2021年第1期3卷 122-129页

作者： Parvathi S Nair Jonathan Trisno Hongtao Wang Joel K W Yang Singapore University of Technology and Design 8 Somapah Road487372Singapore Institute of Materials Research and Engineering(IMRE) A^(∗)STAR138634Singapore

Integrating micro-optical components at the end facet of an optical fiber enables compact optics to shape the output beam(***,focusing,and coupling to free space elements or photonic integrated circuits).However,the scalability of this approach is a longstanding challenge as these components must be aligned onto individual fiber *** this paper,we propose a socket that enables easy slotting of fibers,self-alignment,and coupling onto micro-optical *** integrated socket can be detached from the substrate upon fiber insertion to create a stand-alone optical *** is done using nanoscale 3D printing via two-photon polymerization lithography onto glass substrates,which allows multiple sockets to be patterned in a single *** investigated variations in socket design and evaluated the performance of optical elements for telecom *** obtained an alignment accuracy of∼3.5μ*** socket designs can be customized for high efficiency chip to fiber coupling and extended to other spectral ranges for free-form optics.

关键词： integrated socket alignment fiber slotting fiber connector two-photon polymerization lithography

Engineering immunosuppressive drug-resistant armored(IDRA)SARS-CoV-2 T cells for cell therapy

在线全文

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2023年第11期20卷 1300-1312页

作者： Qi Chen Adeline Chia Shou Kit Hang Amy Lim Wee Kun Koh Yanchun Peng Fei Gao Jili Chen Zack Ho Lu-En Wai Kamini Kunasegaran Anthony Tanoto Tan Nina Le Bert Chiew Yee Loh Yun Shan Goh Laurent Renia Tao Dong Anantharaman Vathsala Antonio Bertoletti Emerging Infectious Disease Program Duke-NUS Medical SchoolSingaporeSingapore National University Centre for Organ Transplantation National University HospitalSingaporeSingapore MRC Human Immunology Unit MRC Weatherall Institute of Molecular MedicineRadcliffe Department of MedicineUniversity of OxfordOxfordUK Lion TCR Pte Ltd SingaporeSingapore A*star ID labs Agency for ScienceTechnology and ResearchSingaporeSingapore Lee Kong Chian School of Medicine Nanyang Technological UniversitySingaporeSingapore Department of Medicine Yong Loo Lin School of MedicineNational University of SingaporeSingaporeSingapore Singapore Immunology Network A*STARSingaporeSingapore

Solid organ transplant(SOT)recipients receive immunosuppressive drugs(ISDs)and are susceptible to developing severe ***,we analyze the Spike-specific T-cell response after 3 doses of mRNA vaccine in a group of SOT patients(n=136)treated with different *** demonstrate that a combination of a calcineurin inhibitor(CNI),mycophenolate mofetil(MMF),and prednisone(Pred)treatment regimen strongly suppressed the mRNA vaccine-induced Spike-specific cellular *** defects have clinical consequences because the magnitude of vaccine-induced Spike-specific T cells was directly proportional to the ability of SOT patients to rapidly clear SARS-CoV-2 after breakthrough *** then compensate for the T-cell defects induced by immunosuppressive treatment and to develop an alternative therapeutic strategy for SOT patients,we describe production of 6 distinct SARS-CoV-2 epitope-specific ISD-resistant T-cell receptor(TCR)-T cells engineered using the mRNA electroporation method with reactivity minimally affected by mutations occurring in Beta,Delta,Gamma,and Omicron *** strategy with transient expression characteristics marks an improvement in the immunotherapeutic field and provides an attractive and novel therapeutic possibility for immunosuppressed COVID-19 patients.

关键词： T cell therapy Transplantation SARS-CoV-2 Immunosuppressive drug resistant T cells

Emerging theory and phenomena in thermal conduction: A selective review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2022年第11期65卷 2-17页

作者： Jie Chen Jia He Dongkai Pan Xiaotian Wang Nuo Yang Jiaojiao Zhu Shengyuan A.Yang Gang Zhang Center for Phononics and Thermal Energy Science China-EU Joint Lab for NanophononicsMOE Key Laboratory of Advanced Microstructured MaterialsSchool of Physics Science and EngineeringTongji UniversityShanghai 200092China School of Energy and Power Engineering Huazhong University of Science and Technology(HUST)Wuhan 430074China School of Physical Science and Technology Southwest UniversityChongqing 400715China Research laboratory for Quantum Materials Singapore University of Technology and DesignSingapore 487372Singapore Institute of High Performance Computing Agency for ScienceTechnology and Research(A*STAR)Singapore 138632Singapore

Recently, emerging phonon phenomena have been discovered and rapidly developed, which have become an active hot research topic. In this review article, we present state-of-the-art advances in several fascinating phonon transport phenomena. First, we summarize the recent progress on the wave nature of phonons, including phonon coherence and its effects on thermal conductivity and the topological properties of phonons. Then, we discuss the particle nature of phonons, including the weak coupling of phonons and the high-order phonon anharmonicity. Finally, we present the summary and a brief outlook. This review presents the advanced understanding of some emerging phonon phenomena in solid materials, which provides new opportunities for further advancement in a wide variety of applications.

关键词： phonon transport coherence topological phonon high-order phonon interaction

同方期刊数据库

Epoxy resin nanocomposites reinforced with ionized liquid stabilized carbon nanotubes

在线全文

学校读者我要写书评

暂无评论

International Journal of Smart and Nano Materials 2011年第3期2卷 176-193页

作者： Zhe Wang Xiongtao Yang Qiang Wang H.Thomas Hahn Sang-gi Lee Kun-Hong Lee Zhanhu Guo Mechanical&Aerospace Engineering Department University of California Los AngelesLos AngelesCA 90095USA Integrated Composites lab Dan F.Smith Department of Chemical EngineeringLamar UniversityBeaumontTX 77710USA Institute of Chemical and Engineering Sciences(ICES) A-STARApplied Catalysis1Pesek RoadJurong Island627833 Singapore Department of Chemistry and Nano Science Ewha Womans UniversitySeoul 120-750Korea Department of Chemical Engineering Pohang University of Science and TechnologyPohang 790-784Korea

Epoxy resin nanocomposites reinforced with three different ionic liquid functionalized carbon nanotubes(f-CNTs)were fabricated by an in situ polymerization *** influence of the anions on the curing process was studied through differential scanning calorimetry(DSC)and normalized Fourier transform infrared(FTIR)*** composition of the nanocomposites was analyzed by X-ray photoelectron *** different mechanisms are proposed to explain the curing process of the neat epoxy and its *** electric conductivity and mechanical properties of the nanocomposites are also *** tensile strength was increased dramatically due to the insertion of *** electron microsopy fracture surface analysis indicates a strong interfacial bonding between the carbon nanotubes and the polymer matrix.

关键词： epoxy resin nanocomposite carbon nanotube ionic liquid functionalization

A Distributed Fibre Bragg Grating Sensor Interrogator Employing a Reformative Arrayed Waveguide Grating

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2008年第4期25卷 1329-1332页

作者：黄景堂黄旭光赵华伟 lab of Photonics Information Technology South China Normal University Cuangzhou 510006

We present an interrogating technique employing a reformative arrayed waveguide grating without output waveguides in combination with a linear charge coupled device. A simple and effective data processing method called area equalized point is used to improve the system resolution. The simulation results show that the wavelength shift of a fibre Bragg grating with temperature can be precisely measured by this interrogation technique. The temperature accuracy and wavelength resolution of the sensor system are smaller than 0.08℃ and 0.8pm, respectively. If the FBG 3dB-bandwidth is 0.2nm with the wavelength spacing between two adjacent FBGs of 1.4 nm, the temperature and wavelength errors caused by crosstalk are respectively 0.01℃ and 0. 1 pm.

关键词： supernova explosion proto-neutron star shock wave

Twin-T Oscillator Containing Polymer Coated Parallel Plate Capacitor for Sea Water Salinity Sensing

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Applied Biosensor 2013年第2期2卷 57-64页

作者： Shreyas Bhatt Abdur Rub Abdur Rahman Sunil K. Arya Shekhar Bhansali Bioelectronics Program Institute of Microelectronics A*Star Singapore Science Park II Singapore City Singapore BioMEMS and Microsystems lab Department of Electrical Engineering University of South Florida Tampa USA Department of Electrical and Computer Engineering Florida International University Miami FL USA

This paper presents the development of a Twin-T oscillator comprising polymer coated parallel plates as a sensor for ocean water salinity *** sensor employs a parallel plate capacitor design, with sea water serving as the medium between plates. Novalac resin and a proprietary commercial polymer (AccufloTW) were investigated as corrosion protective coatings for the copper electrodes of the capacitor. Electrochemical Impedance Spectroscopy (EIS) was employed to evaluate corrosion inhibition of polymer coatingin sea water. A detection circuit was designed and simulated using P-spice and then implemented in Printed Circuit Board (PCB). EIS results indicate that Accuflo exhibits better corrosion inhibition in ocean water than Novolac. Further, the use of Twin-T oscillator based detection circuit resulted in enhanced sensitivity and better detection limit. Experiments performed using ocean water samples resulted in oscillator frequency shift of 410 Hertz/power supply unit (Hz/PSU). Oscillator frequency drift was reduced using frequency-to-voltage converters and sensitivity of 10 mV/PSU was achieved.

关键词： Impedance Spectroscopy Salinity Sensing Capacitive Sensors Polymer Coating Twin-T Oscillator

SYNTHESIS, PROPERTIES AND ELECTROPOLYMERIZATION OF star-SHAPED OLIGOTHIOPHENES WITH HEXAKIS(FLUOREN-2-YL)BENZENE AS CORE

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2013年第6期31卷 938-945页

作者： Yang Zou Yuan Liu Jin-gui Qin 杨楚罗 Department of Chemistry Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials Wuhan University

star-shaped oligothiophenes with hexakis（fluoren-2-yl）benzene （HFB） as cores were designed and synthesized. Grafting thiophene units to HFB results in a bond flattening of the core, and makes the molecules a flipping-twist shape. Their thermal, photophysical and electrochemical properties were studied. Highly cross-linked conjugated polymers can be produced by electropolymerization of T1-T3.

关键词： star-shaped molecules Hexakis(fluoren-2-yl)benzene Oligothiophene Electropolymerization.