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Design and analysis of carbon nanotube FET based quaternary full adders Article
Mohammad Hossein MOAIYERI,Shima SEDIGHIANI,Fazel SHARIFI,Keivan NAVI
Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 10, Pages 1056-1066 doi: 10.1631/FITEE.1500214
Keywords： Nanoelectronics Carbon nanotube FET Multiple-valued logic Quaternary logic
A novel ternary half adder and multiplier based on carbon nanotube field effect transistors Article
Sepehr TABRIZCHI,Nooshin AZIMI,Keivan NAVI
Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 3, Pages 423-433 doi: 10.1631/FITEE.1500366
Keywords： CNTFET-based design Ternary Half adder Multiplier Multiple-valued logic (MVL)
Jialiang Wang,Sufen Dong,Sze Dai Pang,Xun Yu,Baoguo Han,Jinping Ou
Engineering 2022, Volume 18, Issue 11, Pages 232-245 doi: 10.1016/j.eng.2021.04.030
Replacing micro-reinforcing fibers with carbon nanotubes (CNTs) is beneficial for improving the impact properties of ultra-high performance concrete (UHPC); however, the weak wettability and dispersibility of CNTs and the weakly bonded interface between CNTs and UHPC limit their effectiveness as composites. Therefore, this study aims to enhance the reinforcement effect of CNTs on the impact properties of UHPC via functionalization. Unlike ordinary CNTs, functionalized CNTs with carboxyl or hydroxyl groups can break the Si–O–Ca–O–Si coordination bond in the C–S–H gel and form a new network in the UHPC matrix, effectively inhibiting the dislocation slip inside UHPC matrix. Furthermore, functionalized CNTs, particularly carboxyl-functionalized CNTs, control the crystallization process and microscopic morphology of the hydration products, significantly decreasing and even eliminating the width of the aggregate–matrix interface transition zone of the UHPC. Moreover, the functionalized CNTs further decrease the attraction of the negatively charged silicate tetrahedron to Ca2+ in the C–S–H gel, while modifying the pore structure (particularly the nanoscale pore structure) of UHPC, leading to the expansion of the intermediate C–S–H layer. The changes in the microstructures of UHPC brought about by the functionalized CNTs significantly enhance its dynamic compressive strength, peak strain, impact toughness, and impact dissipation energy at strain rates of 200–800 s−1. Impact performance of UHPC containing a small amount of carboxyl-functionalized CNTs (especially the short ones) is generally better than that of UHPC containing hydroxyl-functionalized and ordinary CNTs; it is even superior to that of UHPC with a high steel fiber content.
Keywords： Functionalized carbon nanotubes Concrete Impact properties Reinforcing mechanisms
千兆赫片上互联单壁纳米碳管电分析 Article
Zamshed Iqbal CHOWDHURY,Md. Istiaque RAHAMAN,M. Shamim KAISER
Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 2, Pages 262-271 doi: 10.1631/FITEE.1500349
Keywords： 互联；碳纳米管；电流密度；传播常量；特性阻抗；片上系统
Efficient and optimized approximate GDI full adders based on dynamic threshold CNTFETs for specific least significant bits Research Article
Ayoub SADEGHI, Razieh GHASEMI, Hossein GHASEMIAN, Nabiollah SHIRI,H.ghasemian@sutech.ac.ir
Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 4, Pages 599-616 doi: 10.1631/FITEE.2200077
Keywords： Carbon nanotube field-effect transistor (CNTFET) Optimization algorithm Nondominated sorting based genetic algorithm II (NSGA-II) Gate diffusion input (GDI) Approximate computing
The progress of biomimetic membrane
Zeng Yanjun,Zhang Lin,Chen Huanlin
Strategic Study of CAE 2014, Volume 16, Issue 7, Pages 10-16
This review first presents the main two structures in cell membrane—the lipid bilayer and membrane proteins and the mechanism of the ultrafast water transportation .It then describles the three types of biomimetic membranes that apply membrane protein，carbon nanotubes (CNTs) and artificial channels as water channel respectively. At the part of the membrane protein，the advantages of amphiphilic block copolymer using as supporting matrix and the problem faced in large-scale production of defectless membrane have been introduce；the second part is mainly about the mechanism of ultrafast water transportation in CNTs and the fabrication method of the hybrid membrane；at the part of artificial channels what really important is the design method. The review concludes with a discussion on the fundamental and practical challenges and a future outlook on the application of biomimetic membrane for desalination.
Keywords： cell membrane aquaporin proteins biomimetic CNT artificial water channel
Praewpilin Kangvansura, Ly May Chew, Chanapa Kongmark, Phatchada Santawaja, Holger Ruland, Wei Xia, Hans Schulz, Attera Worayingyong, Martin Muhler
Engineering 2017, Volume 3, Issue 3, Pages 385-392 doi: 10.1016/J.ENG.2017.03.013
Nitrogen-doped carbon nanotubes (NCNTs) were used as a support for iron (Fe) nanoparticles applied in carbon dioxide (CO2) hydrogenation at 633 K and 25 bar (1 bar = 105 Pa). The Fe/NCNT catalyst promoted with both potassium (K) and manganese (Mn) showed high performance in CO2 hydrogenation, reaching 34.9% conversion with a gas hourly space velocity (GHSV) of 3.1 L·(g·h)−1. Product selectivities were high for olefin products and low for short-chain alkanes for the K-promoted catalysts. When Fe/NCNT catalyst was promoted with both K and Mn, the catalytic activity was stable for 60 h of reaction time. The structural effect of the Mn promoter was demonstrated by X-ray diffraction (XRD), temperature-programmed reduction (TPR) with molecular hydrogen (H2), and in situ X-ray absorption near-edge structure (XANES) analysis. The Mn promoter stabilized wüstite (FeO) as an intermediate and lowered the TPR onset temperature. Catalytic ammonia (NH3) decomposition was used as an additional probe reaction for characterizing the promoter effects. The Fe/NCNT catalyst promoted with both K and Mn had the highest catalytic activity, and the Mn-promoted Fe/NCNT catalysts had the highest thermal stability under reducing conditions.
Keywords： CO2 hydrogenation Iron catalyst Nitrogen-doped carbon nanotubes Manganese promoter Potassium promoter
Resolving the Adhesive Behavior of 1D Materials: A Review of Experimental Approaches Review
James L. Mead, Shiliang Wang, Sören Zimmermann, Sergej Fatikow, Han Huang
Engineering 2023, Volume 24, Issue 5, Pages 39-72 doi: 10.1016/j.eng.2023.02.012
The adhesive behavior of one-dimensional (1D) materials, such as nanotubes and nanowires, plays a decisive role in the effective fabrication, functionality, and reliability of novel devices that integrate 1D components, as well as in biomimetic adhesives based on 1D arrays. This review compiles and critically evaluates recent experimental techniques that aim to characterize the adhesion behavior of interfaces formed by 1D materials, including when such materials are brought into contact with a substrate or adjacent 1D materials. The conformation of 1D material to surfaces and the associated occurrence of multi-asperity contact are discussed, and the coupling of adhesion and friction during interfacial attachment and detachment is explored. The use of 1D materials as reinforcement agents in nanocomposites and the associated interfacial characterization techniques are considered. The potential for the environmental conditions that exist during sample preparation and adhesion testing to influence 1D interfacial interactions and, ultimately, to alter the adhesion behavior of a 1D material is scrutinized. Finally, a brief perspective is provided on ongoing challenges and future directions, which include the methodical investigation of the testing environment and the alteration of adhesion through surface modification.
Keywords： Interface adhesion 1D materials Nanowire Carbon nanotube Nanomanipulation Surface forces Mechanical peeling
Nanometre Technology and Its Influence on the Revolution of Science and Technology
Yuan Jun
Strategic Study of CAE 2001, Volume 3, Issue 10, Pages 82-85
In February 2000, U.S.A worked out the strategy of National Nanometre Technology (NT), which evoked worldwide repercussions . Japan and Europe also successively worked out their development program of NT. As a new forward branch of science , NT will become a core driving force of causing a new round of material revolution in the 21 st century and exert an immense influence on the field of aerospace. This paper simply introduces the definition of NT, nanometre materials, and the research and development status of NT.
Keywords： nanometre technology nanometre materials development program
Nanomechanical Characteristics of Interfacial Transition Zone in Nano-Engineered Concrete Article
Xinyue Wang, Sufen Dong, Zhenming Li, Baoguo Han, Jinping Ou
Engineering 2022, Volume 17, Issue 10, Pages 99-109 doi: 10.1016/j.eng.2020.08.025
This study investigates the effects of nanofillers on the interfacial transition zone (ITZ) between aggregate and cement paste by using nanoindentation and statistical nanoindentation techniques. Moreover, the underlying mechanisms are revealed through micromechanical modeling. The nanoindentation results indicate that incorporating nanofillers increases the degree of hydration in the ITZ, reduces the content of micropores and low-density calcium silicate hydrate (LD C-S-H), and increases the content of high-density C-S-H (HD C-S-H) and ultrahigh-density C-S-H (UHD C-S-H). In particular, a new phase, namely nano-core-induced low-density C-S-H (NCILD C-S-H), with a superior hardness of 2.50 GPa and an indentation modulus similar to those of HD C-S-H or UHD C-S-H was identified in this study. The modeling results revealed that the presence of nanofillers increased the packing density of LD C-S-H and significantly enhanced the interaction (adhesion and friction) among the basic building blocks of C-S-H gels owing to the formation of nano-core-shell elements, thereby facilitating the formation of NCILD C-S-H and further improving the performance of the ITZ. This study provides insight into the effects of nanofillers on the ITZ in concrete at the nanoscale.
Keywords： Concrete Nanofiller Interfacial transition zone Nanoindentation Micromechanical modeling Nano-core effect
Fabrication and characterization of typical nano-scale structures
Jiang Zhuangde,Wang Chenying,Yang Shuming
Strategic Study of CAE 2013, Volume 15, Issue 1, Pages 15-20
Three types of nano-scale structure have been fabricated and characterized using SEM, AFM, etc. In this paper, multilayer thin film deposition technique has been used to fabricate nano-scale structure with 20nm, 25 nm and 35 nm line-width. LER and LWR of nanoline are evaluated with an offline image analysis algorithm. The experimental results indicate that the LER/LWR of the lines is low and the uniform of the lines is high. EBL and ICP technique are employed to fabricate grating patterns with nominal height 220 nm. The result shows that the high frequency fluctuations of line edges after etching decrease, the correlation length increases and values of root mean square deviation (σ) increase. Single and multiple nano steps have been fabricated using FIB technique, and the relationship between the size of the Z-axis and energy of process are analyzed.
Nano-measuring Instruments and Nano-machining Technology
Yao Junen
Strategic Study of CAE 2003, Volume 5, Issue 1, Pages 33-37
Nanotechnology is a research and development hot spot nowadays. In this paper a short introduction of nanoscience and nanotechnology was given. Nano-measurement and nano-machining play a very important and key role in the nanoscience and nanotechnology. Conventional electron microscope is a major nano-measuring instrument. Newly developed scanning probe microscope and focused ion beam-electron beam (dual beam) equipment are two types of powerful nano-measuring instruments and nano-machining tools. Its present state, prospect and market in the world as well as in China were described briefly.
The first-two Chinese prototype transmission electron microscopes were constructed in 1958-1959 in Changchun Institute of Optics and Fine Mechanics, CAS. Beijing Scientific Instrument R & D Center (KYKY) developed the first domestic scanning electron microscope. According to a survey in 1996-1997 there were 1 921 electron microscopes including 756 transmission electron microscopes (TEM) and 1 165 scanning electron microscopes (SEM) in China at that time. Of these 1 921 TEMs and SEMs, 1006 were domestic production (mostly medium-and low-grade electron microscopes) accounting for 52.4 % of the market, and 915 instruments were imported (47.6 %). Beijing Scientific Instrument R & D Center, CAS (KYKY Technology Development LTD) , Shanghai electron-Optical Technology Research Institute and Jiangnan Optical Instrument Plant produced more than 95 % of these 1 006 home-made electron microscopes. The first domestic scanning tunneling microscope (STM) was completed in 1987 in Beijing Open Laboratory of Electron Microscopy under CAS. Since then more than one hundred scanning probe microscopes of various types have been constructed in China. The Chinese electron microscope and scanning probe microscope production should be improved and enlarged to cover the progressively increasing demand of research and development work in China.
Keywords： nanotechnology nano-measurement nano-machining electron microscope scanning probe microscope focused ion beam-electron beam (dual beam) equipment instrumentation
Nanotechnology and Nanomedicine: A Promising Avenue for Lung Cancer Diagnosis and Therapy Review
Wei Yin, Feng Pan, Junjie Zhu, Junwu Xu, Diego Gonzalez-Rivas, Meinoshin Okumura, Zhiyong Tang, Yang Yang,
Engineering 2021, Volume 7, Issue 11, Pages 1577-1585 doi: 10.1016/j.eng.2020.04.017
Lung cancer is a leading cause of cancer-related death worldwide, with a very poor overall five-year survival rate. The intrinsic limitations associated with the conventional diagnosis and therapeutic strategies used for lung cancer have motivated the development of nanotechnology and nanomedicine approaches, in order to improve early diagnosis rate and develop more effective and safer therapeutic options for lung cancer. Cancer nanomedicines aim to individualize drug delivery, diagnosis, and therapy by tailoring them to each patient's unique physiology and pathological features—on both the genomic and proteomic levels—and have attracted widespread attention in this field. Despite the successful application of nanomedicine techniques in lung cancer research, the clinical translation of nanomedicine approaches remains challenging due to the limited understanding of the interactions that occur between nanotechnology and biology, and the challenges posed by the toxicology, pharmacology, immunology, and large-scale manufacturing of nanoparticles. In this review, we highlight the progress and opportunities associated with nanomedicine use for lung cancer treatment and discuss the prospects of this field, together with the challenges associated with clinical translation.
Keywords： Nanomedicine Lung cancer Diagnosis Therapy
Comprehensive strengthening mechanism of steel based on nano scale cementite precipitates
Fu Jie,Li Guangqiang,Yu Yueguang,Mao Xinping,Fang Keming
Strategic Study of CAE 2011, Volume 13, Issue 1, Pages 31-42
This paper summarized the status of comprehensive strengthening mechanism of steel. By using chemical phase analysis, X-ray small-angle scattering, RTO and high-resolution TEM observation, the properties of nano-scale cementite precipitates in Ti micro-alloyed high strength weathering steels produced by thin slab continuous casting and rolling process were analyzed. Except nano-scale TiC, cementites precipitates less than 36 nm and high volume fraction were also found in Ti micro-alloyed high strength weathering steels.The volume fraction of cementite less than 36 nm is 4.4 times as much as that of TiC in the same size. Cementite with high volume fraction has stronger precipitation strengthening effect than that of nano-scale TiC, which can not be ignored.The precipitation strengthening contributions of nano-scale precipitates of different types and sizes should be calculated respectively according to the mechanisms of dislocation intersection and dislocation bypass, and then be added up with the contributions of solid solution strengthening and grain refinement strengthening.A formula for calculate the yield strength of low carbon steel is proposed, and the calculated yield strength considering the precipitation strengthening contributions of nano-scale precipitates and the comprehensive strengthening mechanism of steels matches the experimental results well. The calculated σs=630~676 MPa, while the examined σs=630~680 MPa. The reason for grain refinement strengthening can not directly plus dislocation strengthening and the performance form of phase transformation's influence on steel strength were debated.The applications for comprehensive strengthening theory were summarized, and several scientific questions for further study were put forward.
Keywords： yield strength nano-scale cementite nano-scale titanium carbide precipitation strengthening comprehensive strengthening of steel
Tumor Molecular Imaging with Nanoparticles Review
Zhen Cheng,Xuefeng Yan,Xilin Sun,Baozhong Shen,Sanjiv Sam Gambhir
Engineering 2016, Volume 2, Issue 1, Pages 132-140 doi: 10.1016/J.ENG.2016.01.027
Molecular imaging (MI) can provide not only structural images using traditional imaging techniques but also functional and molecular information using many newly emerging imaging techniques. Over the past decade, the utilization of nanotechnology in MI has exhibited many significant advantages and provided new opportunities for the imaging of living subjects. It is expected that multimodality nanoparticles (NPs) can lead to precise assessment of tumor biology and the tumor microenvironment. This review addresses topics related to engineered NPs and summarizes the recent applications of these nanoconstructs in cancer optical imaging, ultrasound, photoacoustic imaging, magnetic resonance imaging (MRI), and radionuclide imaging. Key challenges involved in the translation of NPs to the clinic are discussed.
Keywords： Tumor Molecular imaging Nanoparticles
Title Author Date Type Operation
Design and analysis of carbon nanotube FET based quaternary full adders
Mohammad Hossein MOAIYERI,Shima SEDIGHIANI,Fazel SHARIFI,Keivan NAVI
Journal Article
A novel ternary half adder and multiplier based on carbon nanotube field effect transistors
Sepehr TABRIZCHI,Nooshin AZIMI,Keivan NAVI
Journal Article
Tailoring Anti-Impact Properties of Ultra-High Performance Concrete by Incorporating Functionalized Carbon Nanotubes
Jialiang Wang,Sufen Dong,Sze Dai Pang,Xun Yu,Baoguo Han,Jinping Ou
Journal Article
Efficient and optimized approximate GDI full adders based on dynamic threshold CNTFETs for specific least significant bits
Ayoub SADEGHI, Razieh GHASEMI, Hossein GHASEMIAN, Nabiollah SHIRI,H.ghasemian@sutech.ac.ir
Journal Article
Effects of Potassium and Manganese Promoters on Nitrogen-Doped Carbon Nanotube-Supported Iron Catalysts for CO2 Hydrogenation
Praewpilin Kangvansura, Ly May Chew, Chanapa Kongmark, Phatchada Santawaja, Holger Ruland, Wei Xia, Hans Schulz, Attera Worayingyong, Martin Muhler
Journal Article
Resolving the Adhesive Behavior of 1D Materials: A Review of Experimental Approaches
James L. Mead, Shiliang Wang, Sören Zimmermann, Sergej Fatikow, Han Huang
Journal Article
Nanometre Technology and Its Influence on the Revolution of Science and Technology
Yuan Jun
Journal Article
Nanomechanical Characteristics of Interfacial Transition Zone in Nano-Engineered Concrete
Xinyue Wang, Sufen Dong, Zhenming Li, Baoguo Han, Jinping Ou
Journal Article
Fabrication and characterization of typical nano-scale structures
Jiang Zhuangde,Wang Chenying,Yang Shuming
Journal Article
Nanotechnology and Nanomedicine: A Promising Avenue for Lung Cancer Diagnosis and Therapy
Wei Yin, Feng Pan, Junjie Zhu, Junwu Xu, Diego Gonzalez-Rivas, Meinoshin Okumura, Zhiyong Tang, Yang Yang,
Journal Article
Comprehensive strengthening mechanism of steel based on nano scale cementite precipitates
Fu Jie,Li Guangqiang,Yu Yueguang,Mao Xinping,Fang Keming
Journal Article
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