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Journal articles on the topic 'Single-Wall Carbon Nanotube (SWCNT)'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Lei, Kunhua, Ali A. Alizadehmojarad, Sergei M. Bachilo, and R. Bruce Weisman. "DNA Wrapping Causes Strain in Single-Wall Carbon Nanotubes." ECS Meeting Abstracts MA2022-01, no. 9 (2022): 719. http://dx.doi.org/10.1149/ma2022-019719mtgabs.

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Short strands of single-stranded DNA (ssDNA) can disperse and individually suspend single-wall carbon nanotubes (SWCNTs) to form a class of hybrids with unusual properties and applications in nanotube structural sorting and fluorescence-based bioanalysis. In these hybrids, the ssDNA strands tend to physisorb onto the nanotube surface, coating it in helical or ring-shaped structures. We have carefully compared fluorescence spectral peak positions in samples of SWCNTs coated by ssDNA and in conventional surfactants such as SDS. In addition to the general and well-known spectral red-shift for the

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2

Ahmed Jamal, G. R., M. Rezanur Islam, M. Adnan Rahman, J. Ferdous Meem, and R. Akter Sathie. "Chirality Dependence of Gas Adsorption Property of Single Wall Carbon Nanotubes." Materials Science Forum 889 (March 2017): 248–52. http://dx.doi.org/10.4028/www.scientific.net/msf.889.248.

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In this work, effect of chirality on gas adsorption property of semiconducting single-wall carbon nanotubes (SWCNTs) is reported for the first time. First principles simulation of the interaction of three different chirality SWCNTs with different gas molecules is performed maintaining equilibrium tube–molecule distance. Results are obtained employing density functional theory, using the Atomistic toolkit simulation package (ATK-DFT). Nanotube density of states is observed to vary significantly due to interaction with different types of gases as well as for same gas if chirality of SWCNTs varie

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3

Penumadu, D., A. Dutta, G. M. Pharr, and B. Files. "Mechanical properties of blended single-wall carbon nanotube composites." Journal of Materials Research 18, no. 8 (2003): 1849–53. http://dx.doi.org/10.1557/jmr.2003.0258.

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The improvement in mechanical properties of blended nanocomposites prepared using a low-viscosity, liquid epoxy resin and purified single-wall carbon nanotubes (SWCNTs) was evaluated. The macroscopic tensile stress–strain behavior for hybrid materials made with varying amounts of SWCNT was determined and showed little improvement in the breaking tensile strength. The corresponding variations in modulus and hardness were obtained using nanoindentation considering time effects and showed quantifiable but modest improvements. The small changes in the observed stiffness and breaking strength of ca

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4

Lakshmanan, Shanmugamurthy, Alokik Kanwal, Sheng Liu, et al. "Improved Electrophoretic Deposition of Vertical Single Wall Carbon Nanotubes with Nanoscopic Electrostatic Lenses." Micromachines 11, no. 3 (2020): 324. http://dx.doi.org/10.3390/mi11030324.

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Under certain conditions, electrophoretic deposition (EPD) of single-wall carbon nanotubes (SWCNTs) onto metal at the base of nanoscale insulating windows can result in a single SWCNT per window, bonded at one end to the metal. During EPD charge, buildup on the insulator creates electrostatic lenses at the windows that control the trajectory of the SWCNTs. The aim is to develop a reproducible process for deposition of individual vertically oriented SWCNTs into each window to enable novel devices. The length of the SWCNTs is shown to be the most critical parameter in achieving results that coul

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5

Li, Shisheng, Peng-Xiang Hou, Chang Liu, et al. "Honeycomb-like single-wall carbon nanotube networks." J. Mater. Chem. A 2, no. 10 (2014): 3308–11. http://dx.doi.org/10.1039/c3ta15165d.

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A honeycomb-like single-wall carbon nanotube (SWCNT) network was constructed. Different from random SWCNT networks, the honeycomb-like network shows much higher conductivity, transparency and electrical response to chemical doping.

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6

Vobornik, Dusan, Maohui Chen, Shan Zou, and Gregory P. Lopinski. "Measuring the Diameter of Single-Wall Carbon Nanotubes Using AFM." Nanomaterials 13, no. 3 (2023): 477. http://dx.doi.org/10.3390/nano13030477.

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In this work, we identify two issues that can significantly affect the accuracy of AFM measurements of the diameter of single-wall carbon nanotubes (SWCNTs) and propose a protocol that reduces errors associated with these issues. Measurements of the nanotube height under different applied forces demonstrate that even moderate forces significantly compress several different types of SWCNTs, leading to errors in measured diameters that must be minimized and/or corrected. Substrate and nanotube roughness also make major contributions to the uncertainty associated with the extraction of diameters

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7

Markovic, Zoran, Davor Perusko, Dragana Tosic, et al. "The effect of oxidation on structural and electrical properties of single wall carbon nanotubes." Chemical Industry 65, no. 4 (2011): 363–70. http://dx.doi.org/10.2298/hemind110221024m.

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Single wall carbon nanotubes (SWCNTs) represent an important group of nanomaterials with attractive electrical, chemical, and mechanical properties. In this work we have investigated the structural, optical and electrical properties of single wall carbon nanotube films deposited on copper substrate and then transferred to polymethyl methacrylate (PMMA). The properties of deposited films were varied by changing different parameters: substrate temperature, deposition time and electric field strength. Atomic force microscopy (AFM) has been used to study the deposition process of SWCNT films on co

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8

Fitó-Parera, Aina, Miguel López Carrillo, Maksiem Erkens, Wim Wenseleers, Salome Forel, and Sofie Cambré. "Mild Opening Procedure to Obtain Open Yet Long Single-Wall Carbon Nanotubes." ECS Meeting Abstracts MA2025-01, no. 12 (2025): 1036. https://doi.org/10.1149/ma2025-01121036mtgabs.

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The encapsulation of molecules inside the hollow core of single-wall carbon nanotubes (SWCNTs) has become, in recent years, an interesting topic for researches in various scientific fields in order to create new functionalities.1–4 As-synthesised SWCNTs have closed ends and therefore need to be opened prior to their filling. Typical opening procedures reported to date include harsh steps (either mechanical or chemical), as for example: strong acid oxidation, grinding, and ultrasonication. These procedures are known to cut the SWCNTs into much shorter segments of only a few hundred nanometres.5

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9

Cherukuri, Tonya, Sergei M. Bachilo, and Bruce Weisman. "Self-Calibrating Fluorimetric Analysis of Single-Wall Carbon Nanotube Samples for Electronics Applications." ECS Meeting Abstracts MA2024-01, no. 15 (2024): 1176. http://dx.doi.org/10.1149/ma2024-01151176mtgabs.

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Semiconducting single-wall carbon nanotubes (SWCNTs) are a leading candidate to replace or supplement silicon in future generation chip manufacturing. Because they are produced as structural mixtures with varied electronic properties, SWCNTs must first be carefully sorted and purified. This requires new metrology tools that can reliably measure SWCNT sample compositions to guide sorting processes and confirm product purity. We describe here a novel, self-calibrating optical instrument designed for advanced characterization of SWCNT samples. This desktop system will quickly, sensitively, and no

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10

Mananghaya, Michael, Emmanuel Rodulfo, Gil Nonato Santos, and Al Rey Villagracia. "Theoretical Investigation on the Solubilization in Water of Functionalized Single-Wall Carbon Nanotubes." Journal of Nanotechnology 2012 (2012): 1–6. http://dx.doi.org/10.1155/2012/780815.

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An important technique to increase the solubility and reactivity of carbon nanotube is through functionalization. In this study, the effects of functionalization of some single-walled carbon nanotubes (SWCNTs) were investigated with the aid of density functional theory. The SWCNT model used in the study consists of a finite, (5, 0) zigzag nanotube segment containing 60 C atoms with hydrogen atoms added to the dangling bonds of the perimeter carbons. There are three water-dispersible SWCNTs used in this study that were functionalized with (a) formic acid, as a model of carboxylic acid, (b) isop

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11

Hasobe, Taku, and Hayato Sakai. "Molecular nanoarchitectures composed of porphyrins and carbon nanomaterials for light energy conversion." Journal of Porphyrins and Phthalocyanines 15, no. 05n06 (2011): 301–11. http://dx.doi.org/10.1142/s1088424611003318.

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In this review, we report the recent advances in the construction of composite molecular nanoarchitectures of porphyrins and nanoscale carbon materials such carbon nanotubes (CNT), graphenes and polycyclic aromatic hydrocarbons (PAH) for photoinduced electron transfer and light energy conversion. First, we state novel single-wall carbon nanotubes (SWCNT)-driven aggregation of protonated porphyrins to produce supramolecular assemblies in the form of macroscopic bundles. Then, photoinduced electron transfer in self-assembled single-walled carbon nanotube (SWCNT)/zinc porphyrin (ZnP) hybrids util

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12

CHEN, CHANGXIN, and YAFEI ZHANG. "FABRICATION OF DISPERSED ALIGNED CARBON NANOTUBE ARRAY BETWEEN METAL ELECTRODES." International Journal of Nanoscience 05, no. 04n05 (2006): 389–94. http://dx.doi.org/10.1142/s0219581x06004528.

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Dispersed aligned single-wall carbon nanotube (SWCNT) array has been formed between electrodes by electric field assisted alignment of surface decorated SWCNTs. The surface decoration of SWCNTs with functional molecules allows them to dispersedly bridge metal electrodes and effectively obviates the entanglement between SWCNTs. The influences of solution volatility and electric-field type on the alignment are investigated. It is indicated that the well-oriented SWCNT array can be achieved by using the high-volatility solvent and the high-frequency AC electric field to align SWCNTs.

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13

Khoerunnisa, Fitri, Aaron Morelos-Gomez, Hideki Tanaka, et al. "Metal–semiconductor transition like behavior of naphthalene-doped single wall carbon nanotube bundles." Faraday Discuss. 173 (2014): 145–56. http://dx.doi.org/10.1039/c4fd00119b.

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Naphthalene (N) or naphthalene-derivative (ND) adsorption-treatment evidently varies the electrical conductivity of single wall carbon nanotube (SWCNT) bundles over a wide temperature range due to a charge–transfer interaction. The adsorption treatment of SWCNTs with dinitronaphthalene molecules enhances the electrical conductivity of the SWCNT bundles by 50 times. The temperature dependence of the electrical conductivity of N- or ND-adsorbed SWCNT bundles having a superlattice structure suggests metal–semiconductor transition like behavior near 260 K. The ND-adsorbed SWCNT gives a maximum in

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14

Guo, Shu-Yu, Peng-Xiang Hou, Feng Zhang, Chang Liu, and Hui-Ming Cheng. "Gas Sensors Based on Single-Wall Carbon Nanotubes." Molecules 27, no. 17 (2022): 5381. http://dx.doi.org/10.3390/molecules27175381.

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Single-wall carbon nanotubes (SWCNTs) have a high aspect ratio, large surface area, good stability and unique metallic or semiconducting electrical conductivity, they are therefore considered a promising candidate for the fabrication of flexible gas sensors that are expected to be used in the Internet of Things and various portable and wearable electronics. In this review, we first introduce the sensing mechanism of SWCNTs and the typical structure and key parameters of SWCNT-based gas sensors. We then summarize research progress on the design, fabrication, and performance of SWCNT-based gas s

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15

Soltani, Nima, Sergei M. Bachilo, and R. Bruce Weisman. "Exploring the Role of Photosensitizer in Guanine Functionalization of Single-Wall Carbon Nanotubes." ECS Meeting Abstracts MA2022-01, no. 9 (2022): 732. http://dx.doi.org/10.1149/ma2022-019732mtgabs.

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Single-walled carbon nanotubes (SWCNTs) have attracted a great deal of attention during the past two decades because of their unique optoelectronic properties and their potential applications in biomedical theranostics as well as nanoelectronics. It was recently discovered that it is possible to spatially modulate the exciton band gap of carbon nanotubes through a process known as guanine functionalization. In this reaction, the guanine nucleotides of an ssDNA strand wrapping a nanotube become covalently bonded to sidewall carbon atoms upon exposure to singlet oxygen.1 In the original work, th

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16

Dong, Chensong. "Effective Elastic Modulus of Wavy Single-Wall Carbon Nanotubes." C 9, no. 2 (2023): 54. http://dx.doi.org/10.3390/c9020054.

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A simple method for determining the effective elastic modulus of wavy single-wall carbon nanotubes (SWCNTs) is presented in this paper. The effective modulus of curved SWCNTs is derived using Castigliano’s theorem. The effect of curvature on the effective modulus is studied. This method is verified by finite element analysis (FEA). The distributions of effective moduli are studied by Monte Carlo simulation. The effective modulus of a general wavy SWCNT is derived by considering the SWCNT as a number of curved SWCNT sections.

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17

Zheng, Ming. "(Invited) Recent Progress in Carbon Nanotube Sorting by DNA." ECS Meeting Abstracts MA2023-01, no. 10 (2023): 1232. http://dx.doi.org/10.1149/ma2023-01101232mtgabs.

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DNA-wrapped single-wall carbon nanotubes (DNA-SWCNT) have a number of utilities. Sorting DNA-SWCNTs have been extensively studied by us and others. However, reported sorting procedures are not widely adopted by other labs. In this talk I will report some recent effort we have made in streamlining DNA-SWCNT sorting. It is our hope that the simplified procedure can be more easily adopted by others for various applications.

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18

Yamamoto, Go, Yoshinori Sato, Toru Takahashi, et al. "Single-walled carbon nanotube-derived novel structural material." Journal of Materials Research 21, no. 6 (2006): 1537–42. http://dx.doi.org/10.1557/jmr.2006.0186.

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Binder-free macroscopic single-walled carbon nanotube (SWCNT) solids were prepared by spark plasma sintering (SPS) of purified SWCNTs. The effects of processing temperatures and pressures on the mechanical properties of the SWCNT solids and structural change of SWCNTs in the SWCNT solids were investigated. Transmission electron microscope observation of the SWCNT solids revealed thatthe high-temperature treatment has transformed some part of the SWCNTs into amorphous-like structure and the rest of the SWCNTs remained buried into the above structure. The mechanical properties of the SWCNT solid

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19

Forel, Salome, Yamaldi Midiladji Bakary, Catherine Marichy, et al. "(Invited) Advance in Single-Wall Carbon Nanotubes Filling." ECS Meeting Abstracts MA2024-01, no. 9 (2024): 875. http://dx.doi.org/10.1149/ma2024-019875mtgabs.

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Single-wall carbon nanotubes (SWCNTs) are renowned for their outstanding charge carrier mobility, optical, thermal, and mechanical properties. Combining these characteristics with their nanometer-scale diameter renders them highly promising for developing (opto)-electronic devices, where the challenge lies in achieving miniaturization without compromising performance. In addition to their intrinsic characteristics, SWCNTs feature a hollow core that can be filled with various molecules1, resulting in unique one-dimensional hybrids that integrate the properties of the nanotube with those of the

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20

Zhang, Zaoli, Lian Ouyang, Zujin Shi, and Zhennan Gu. "Compound growth and microstructure of carbon nanotube." Journal of Materials Research 18, no. 10 (2003): 2459–63. http://dx.doi.org/10.1557/jmr.2003.0342.

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The compound growth of single-walled carbon nanotube (SWCNT) and multiwalled carbon nanotube (MWCNT), which formed a nanotube cable, was achieved by the chemical vapor deposition of natural gas on an Fe catalyst supported on SiO2–Al2O3 hybrid materials at 950 °C. The microstructure of nanotubes was characterized by high-resolution transmission electron microscopy (HRTEM). The SWCNTs encapsulated inside MWCNTs can be two, three, or even more in quantity with a diameter range from 1.0 nm to 2.0 nm. The diameter of SWCNT is controlled by the size of the catalyst nanoparticles. Some bundles of SWC

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21

SONG, HAI-YANG, MING-LIANG HU, and XIN-WEI ZHA. "CONNECTION OF SINGLE-WALLED CARBON NANOTUBES BY BANDAGING WITH A BIGGER RADIUS SINGLE-WALLED CARBON NANOTUBE." Modern Physics Letters B 23, no. 07 (2009): 1005–12. http://dx.doi.org/10.1142/s0217984909019193.

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We report molecular dynamics studies of single-walled carbon nanotubes (SWCNT) as a bandage to connect separated SWCNTs for getting structures of random length. The mechanical properties of the connected SWCNT strands with different joint length under axial loads are investigated using the classical molecular dynamics simulations method. The interaction between atoms is modeled using the second-generation of reactive empirical bond-order (REBO) potential coupled with the Lennard–Jones (L–J) potential. The mechanical properties, such as Young's modulus, tensile strength, critical buckling strai

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22

Kono, Junichiro. "(Invited, Digital Presentation) Optoelectronic Processes in Single-Chirality Carbon Nanotube Thin Films." ECS Meeting Abstracts MA2022-01, no. 9 (2022): 744. http://dx.doi.org/10.1149/ma2022-019744mtgabs.

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Much understanding exists regarding chirality-dependent properties of single-wall carbon nanotubes (SWCNTs), primarily obtained through single-tube studies. However, macroscopic manifestations of chirality dependence have been limited, especially in electronic transport. Here, recent progress in our optical and electronic transport studies of single-chirality SWCNT thin films will be reviewed. We observed pronounced chirality-dependent electronic localization in temperature and magnetic field dependent conductivity measurements on macroscopic films of single-chirality SWCNTs [1]. We also perfo

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23

Fang, Hui, Fei-Peng Zhang, Xing-Xiang Ruan, et al. "Strain-induced negative differential resistance in ultrasmall carbon nanotube." Modern Physics Letters B 31, no. 23 (2017): 1750217. http://dx.doi.org/10.1142/s0217984917502177.

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The transport properties in ultrasmall single-wall carbon nanotubes (SWCNTs) under tensile strain have been theoretically investigated. The regular negative differential resistance (NDR) induced by the strain undergoes a process from enhancement to weakening in the zigzag (3,[Formula: see text]0) SWCNT. The NDR achieves maximum with applying 4% tensile strain. Compared to the case of (3,[Formula: see text]0) SWCNT, that NDR cannot be manipulated by applying strain clearly in (4,[Formula: see text]0) and (5,[Formula: see text]0) ultrasmall SWCNTs with tensile strain lower than 10%. It proposes

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Horie, Masanori, Haruhisa Kato, Shigehisa Endoh, et al. "Effects of Various Carbon Nanotube Suspensions on A549, THP-1, and Peritoneal Macrophage Cells." Journal of Biomimetics, Biomaterials and Biomedical Engineering 24 (July 2015): 1–13. http://dx.doi.org/10.4028/www.scientific.net/jbbbe.24.1.

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The effects of iron content, fiber length, and stability of carbon nanotube (CNT) suspension on cells were examined. Five kinds of single-wall carbon nanotube (SWCNT) suspensions were prepared: with catalytic iron, without iron, long SWCNTs (stable), short SWCNTs (stable), and short SWCNT (unstable). These suspensions were applied to A549, THP-1, and mouse peritoneal macrophage cells. After a 24-h exposure, the mitochondrial activity, cell membrane damage, intracellular oxidative stress, and expression of cytokine genes were determined. Among these properties of SWCNTs, stability of CNT suspen

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25

Kim, Mijin, Prakrit Jena, Christian Cupo, Jeffrey Fagan, and Daniel A. Heller. "(Invited) Understanding Environmental Effects on Carbon Nanotube Fluorescence for Biomedicine." ECS Meeting Abstracts MA2024-01, no. 8 (2024): 834. http://dx.doi.org/10.1149/ma2024-018834mtgabs.

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Semiconducting single-walled carbon nanotubes (SWCNTs) transduce subtle changes in the microenvironment via modulation of their near-infrared fluorescence with potential applications in sensing and imaging. Controlled liquid filling in an endohedral volume of SWCNTs modifies the optical properties of SWCNTs. However, the effects of endohedral solvent dielectric on the nanotube fluorescence and their structure property relationship for biomedical applications are largely unexplored. In this talk, we discuss the environmental effects on SWCNT fluorescence to improve the spectral response of SWCN

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26

Li, Huaping. "Electronically Pure Single Chirality Semiconducting Single-Walled Carbon Nanotube for Large Scale Electronic Devices." MRS Advances 2, no. 02 (2017): 83–88. http://dx.doi.org/10.1557/adv.2017.15.

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Abstract Carbon nanotube thin film transistors (TFTs) with characteristics resembling those of TFTs constructed on amorphous silicon, low-temperature polycrystalline silicon and metal oxides were fabricated on (6,5) single chirality single-walled carbon nanotube (SWCNT) thin film deposited from electronically pure semiconducting (6,5) single chirality single-walled carbon nanotube (SWCNT) ink. This ink was extracted in industrial scale from raw SWCNTs produced using high pressure carbon monoxide conversion, and deposited on pretreated substrates to form uniform and consistent (6,5) HiPCO SWCNT

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27

Dong, Chensong. "Coefficient of Thermal Expansion of Single-Wall Carbon Nanotube Reinforced Nanocomposites." Journal of Composites Science 5, no. 1 (2021): 26. http://dx.doi.org/10.3390/jcs5010026.

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A study on the coefficient of thermal expansion (CTE) of single-wall carbon nanotube (SWCNT)-reinforced nanocomposites is presented in this paper. An interfacial adhesion factor (IAF) is introduced for the purpose of modelling the adhesion between SWCNTs and the matrix. The effective CTE and modulus of SWCNTs are derived using the IAF, and the effective CTE of the nanocomposite is derived by the Mori–Tanaka method. The developed model is validated against experimental data and good agreement is found.

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28

Xu, Ke, Cheng Dong Wu, Xiao Jun Tian, Ying Zhang, and Zai Li Dong. "A Method Study on Assembly of Single-Wall Carbon Nanotube Field Effect Transistor Using Dielectrophoresis." Advanced Materials Research 139-141 (October 2010): 1550–53. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.1550.

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Single-wall carbon nanotubes are candidates for a number of building blocks in nanoscale electronics. With respect to the assembly of carbon nanotube field effect transistor, the dielectrophoresis technology is adopted, which assembles SWCNTs between the micro-electrodes, SWCNTs are affected by the electrophoretic force which is carried out by the related theoretical analysis in a nonuniform electric field. The driving electric field of dielectrophoresis is simulated by the comsol software. According to the simulation results, a number of the experiments are done. It turns out that the require

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29

Bakh, Naveed Ali, Xun Gong, Kevin S. Silmore, et al. "Laser Fluence Dependent Modulation of Single Walled Carbon Nanotube Photoluminescence." ECS Meeting Abstracts MA2023-01, no. 10 (2023): 1186. http://dx.doi.org/10.1149/ma2023-01101186mtgabs.

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Single-walled carbon nanotubes (SWCNT) have a unique, non-photobleaching, bandgap photoluminescence (PL) that has been of interest for sensor development. Take advantage of these properties, colloidal dispersions of single SWCNTs in aqueous solvents are often formed by creating a surface corona phase (CP) using amphiphilic materials. As SWCNT PL emission following photoexcitation can be significantly dependent on its local environment, the CP can be used to tune its photophysical properties, often as a design parameter for sensor development. Recent sensor experiments have shown that reporting

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Alimin, Alimin, Narsito Narsito, Indriana Kartini, and Sri Juari Santosa. "Retracted-Enhanced X-Ray Absorption Property of Gold-Doped Single Wall Carbon Nanotube." Indonesian Journal of Chemistry 15, no. 3 (2015): 211–17. http://dx.doi.org/10.22146/ijc.21187.

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Enhanced X-ray absorption property of single wall carbon nanotube (SWCNT) through gold (Au) doping (Au@SWCNT) has been studied. Mass attenuation coefficient of SWCNT increased 5.2-fold after Au doping treatment. The use of ethanol in the liquid phase adsorption could produce Au nanoparticles as confirmed by the X-ray Diffraction (XRD) patterns. The possibility of gold nanoparticles encapsulated in the internal tube space of SWCNT was observed by transmission electron microscope technique. A significant decrease of nitrogen uptakes and upshifts of Radial Breathing Mode (RBM) of Au@SWCNT specime

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JEONG, SEUNG YOL, KI KANG KIM, KAY HYEOK AN, et al. "FABRICATION OF GAS SENSOR USING SINGLE-WALLED CARBON NANOTUBES DISPERSED IN DICHLOROETHANE." Nano 01, no. 03 (2006): 235–41. http://dx.doi.org/10.1142/s1793292006000264.

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The single-walled carbon nanotube (SWCNT)-field effect transistor (FET) gas sensor was fabricated by spin-coating SWCNTs dispersed in dichloroethane (DCE) solvent on silicon substrate. Raman spectra revealed that walls of the nanotubes were well preserved without much damage during DCE treatment. The sensitivity of the gas sensor was strongly dependent on the series resistance. The sensitivity was maximized in the reasonable contact resistance between nanotubes and electrodes. This was attributed to the suppression of the dark current. The SWCNT gas sensor revealed typical p-type characteristi

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32

Campo, Jochen, Sofie Cambré, Bea Botka, Jan Obrzut, Wim Wenseleers, and Jeffrey Fagan. "Optical Property Tuning of Single-Wall Carbon Nanotubes by Endohedral Encapsulation of a Wide Variety of Dielectric Molecules." ACS Nano 15, no. 2 (2020): 2301–17. https://doi.org/10.1021/acsnano.0c08352.

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Specific and tunable modification to the optical properties of single-wall carbon nanotubes (SWCNTs) is demonstrated through direct encapsulation into the nanotube interior of guest molecules with widely varying static dielectric constants. Filled through simple ingestion of the guest molecule, each SWCNT population is demonstrated to display a robust modification to absorbance, fluorescence, and Raman spectra. Over 30 distinct compounds, covering static dielectric constants from 1.8 to 109, are inserted in large diameter SWCNTs (d = 1.104&minu

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33

DiLeo, Roberta A., Matthew J. Ganter, Brian J. Landi, and Ryne P. Raffaelle. "Germanium–single-wall carbon nanotube anodes for lithium ion batteries." Journal of Materials Research 25, no. 8 (2010): 1441–46. http://dx.doi.org/10.1557/jmr.2010.0184.

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High-capacity thin-film germanium was coupled with free-standing single-wall carbon nanotube (SWCNT) current collectors as a novel lithium ion battery anode. A series of Ge–SWCNT compositions were fabricated and characterized by scanning electron microscopy and Raman spectroscopy. The lithium ion storage capacities of the anodes were measured to be proportional to the Ge weight loading, with a 40 wt% Ge–SWCNT electrode measuring 800 mAh/g. Full batteries comprising a Ge–SWCNT anode in concert with a LiCoO2 cathode have demonstrated a nominal voltage of 3.35 V and anode energy densities 3× the

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Islam, Mohammad. "(Invited) Engineering Single Wall Carbon Nanotubes for Sub-Cellular Drug Delivery." ECS Meeting Abstracts MA2023-01, no. 9 (2023): 1140. http://dx.doi.org/10.1149/ma2023-0191140mtgabs.

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Single wall carbon nanotubes (SWCNTs) have been rigorously studied and engineered for a myriad of applications including drug delivery due to their unique, desirable properties. Since SWCNTs bundle in aqueous media and the bundling substantially diminishes their desirable properties along with inducing cytotoxicity, strategies to disperse individually SWCNTs with therapeutic molecules and biologic excipients have been heavily investigated. However, a handful of studies has been performed to understand the interactions between therapeutic molecules and excipients with SWCNT interface as well as

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35

Choi, Ji-Hoon, Hyeonju Lee, Jin-Hyuk Bae, and Jaehoon Park. "Electrical Instability of Single-Walled Carbon Nanotube Network Thin-Film Transistors." Journal of Nanoscience and Nanotechnology 21, no. 7 (2021): 3938–42. http://dx.doi.org/10.1166/jnn.2021.19249.

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The electrical instability of single-walled carbon nanotube (SWCNT) network-based thin-film transistors is investigated in atmospheric air and under vacuum. Atomic force microscopy images show that the nanotube bundles form X-type and Y-type nodes in the SWCNT-networkfilm. The Raman spectrum reveals that the structural defects in the SWCNTs are negligible. The fabricated SWCNT-network TFTs operate in a p-channel accumulation mode both in air and under vacuum. In contrast, TFTs exposed to atmospheric air environment exhibit lower drain currents and larger hysteresis compared with the vacuum env

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Khazi-Syed, Afeefah, Md Tanvir Hasan, Elizabeth Campbell, Roberto Gonzalez-Rodriguez, and Anton V. Naumov. "Single-Walled Carbon Nanotube-Assisted Antibiotic Delivery and Imaging in S. epidermidis Strains Addressing Antibiotic Resistance." Nanomaterials 9, no. 12 (2019): 1685. http://dx.doi.org/10.3390/nano9121685.

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Although conventional antibiotics have evolved as a staple of modern medicine, increasing antibiotic resistance and the lack of antibiotic efficacy against new bacterial threats is becoming a major medical threat. In this work, we employ single-walled carbon nanotubes (SWCNTs) known to deliver and track therapeutics in mammalian cells via intrinsic near-infrared fluorescence as carriers enhancing antibacterial delivery of doxycycline and methicillin. SWCNTs dispersed in water by antibiotics without the use of toxic bile salt surfactants facilitate efficacy enhancement for both antibiotics agai

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HUH, JEEHYANG, and HOON HUH. "EFFECT OF HELICITY ON THE BUCKLING BEHAVIOR OF SINGLE-WALL CARBON NANOTUBES." International Journal of Modern Physics B 22, no. 31n32 (2008): 5872–77. http://dx.doi.org/10.1142/s0217979208051303.

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Simulations of single-wall carbon nanotube(SWCNT)s having a different chiral vector under axial compression were carried out based on molecular dynamics to investigate the effect of the helicity on the buckling behavior. Calculation was performed at room temperature for (8,8) armchair, (14,0) zigzag and (6,10) chiral single-wall carbon nanotubes. The Tersoff potential was used as the interatomic potential since it describes the C - C bonds in carbon nanotubes reliably. A conjugate gradient (CG) method was used to obtain the equilibrium configuration. Compressive force was applied at the top of

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Du, Lili, Wenjuan Xiong, Wai Kin Chan, and David Lee Phillips. "Photoinduced electron transfer processes of single-wall carbon nanotube (SWCNT)–based hybrids." Nanophotonics 9, no. 16 (2020): 4689–701. http://dx.doi.org/10.1515/nanoph-2020-0389.

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AbstractIn this review, noncovalent functionalization of single-wall carbon nanotubes (SWCNTs) is briefly reviewed. The functional materials summarized here include metalloporphyrin derivatives, biomolecules and conjugated polymers. Notably, time-resolved spectroscopic techniques such as time-resolved fluorescence and transient absorption were employed to directly investigate the electron transfer and recombination processes between the functionalities and the SWCNTs. In addition, Raman spectroscopy is also useful to identify the interaction and the electron transfer direction between both the

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Weisman, R. Bruce, Tonya Cherukuri, Sergei M. Bachilo, Wei Meng, and Satish Nagarajaiah. "(Invited) Advanced Carbon Nanotube Fluorescence Spectrometry for Novel Applications." ECS Meeting Abstracts MA2023-01, no. 10 (2023): 1181. http://dx.doi.org/10.1149/ma2023-01101181mtgabs.

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Instrumental advances in near-IR fluorescence spectroscopy are enabling new types of measurements involving single-wall carbon nanotubes (SWCNTs). Two unique systems will be described. The first is a two-dimensional fluorescence-detected circular dichroism (FDCD) spectrometer. In this, SWCNT samples are excited by a spectrally selected supercontinuum laser beam that is switched between left- and right-circular polarization in an electro-optic modulator. Near-infrared sample fluorescence emitted in the backward direction is captured and directed to a scanning monochromator with a cooled InGaAs

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FAN, FU-REN F., BO CHEN, AUSTEN K. FLATT, JAMES M. TOUR, and ALLEN J. BARD. "CHARGE TRANSPORT THROUGH CARBON NANOTUBE OR FULLERENE–MOLECULE–SILICON JUNCTIONS." Nano 02, no. 05 (2007): 285–94. http://dx.doi.org/10.1142/s1793292007000660.

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We report here the current–voltage (i–V) characteristics of several (n++- Si /MNOPE/ C 60/ Pt -tip) or (n++- Si /MNOPE/SWCNT/ Pt -tip) junctions, where MNOPE = 2'-mononitro-4, 4'-bis(phenylethynyl)-1-phenylenediazonium and SWCNT = single wall carbon nanotube. A layer of C 60 or SWCNT-derivatized MNOPE has strong effect on the i–V behavior of the junctions, including rectification, negative differential resistance (NDR) and switching behaviors. The i–V curve of a grafted molecular monolayer (GMM) of MNOPE atop n++- Si shows NDR behavior, whereas those of C 60- and SWCNT-derivatized GMMs of MNOP

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Zhang, Danhui, Houbo Yang, Zhongkui Liu, and Anmin Liu. "Molecular dynamics simulations of single-walled carbon nanotubes and polynylon66." International Journal of Modern Physics B 33, no. 23 (2019): 1950258. http://dx.doi.org/10.1142/s0217979219502588.

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Polynylon66, as a kind of important engineering plastics, is widely used in various fields. In this work, we studied the interfacial interactions between polynylon66 and single-walled carbon nanotubes (SWCNTs) using molecular dynamics (MD) simulations. The results showed that the polynylon66 could interact with the SWCNTs and the mechanism of interfacial interaction between polynylon66 and SWCNTs was also discussed. Furthermore, the morphology of polynylon66 adsorbed to the surface of SWCNTs was investigated by the radius of gyration. Influence factors such as the initial angle between polynyl

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Wu, Yucui, Xinnan Lin, and Min Zhang. "Carbon Nanotubes for Thin Film Transistor: Fabrication, Properties, and Applications." Journal of Nanomaterials 2013 (2013): 1–16. http://dx.doi.org/10.1155/2013/627215.

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We review the present status of single-walled carbon nanotubes (SWCNTs) for their production and purification technologies, as well as the fabrication and properties of single-walled carbon nanotube thin film transistors (SWCNT-TFTs). The most popular SWCNT growth method is chemical vapor deposition (CVD), including plasma-enhanced chemical vapor deposition (PECVD), floating catalyst chemical vapor deposition (FCCVD), and thermal CVD. Carbon nanotubes (CNTs) used to fabricate thin film transistors are sorted by electrical breakdown, density gradient ultracentrifugation, or gel-based separation

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Shapturenka, Pavel, and Jeffrey Fagan. "Assembly and Characterization of Length-Sorted, Aligned Boron Nitride/Carbon Nanotube Thin Film Composites Via Slow Vacuum Filtration." ECS Meeting Abstracts MA2023-01, no. 10 (2023): 1199. http://dx.doi.org/10.1149/ma2023-01101199mtgabs.

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Globally aligned single-wall carbon nanotubes (SWCNTs) are a promising, scalable platform for studying fundamental physical phenomena and an important vehicle for optoelectronic device applications. Recent work by Rust et al. [1] has identified nanotube length as an important mediating factor in the degree and scale of SWCNT alignment via slow vacuum filtration (SVF). Building on this work and that of Walker et al. [2,3], we explore the co-assembly of length-sorted SWCNTs and boron nitride nanotubes (BNNTs) atop polycarbonate track-etched membranes. BNNTs have recently gained interest as a chi

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Espinoza, Vanessa Briana, Yu Zheng, Han Htoon, Sergei M. Bachilo, and R. Bruce Weisman. "Exploring the Covalent Doping of Single-Wall Carbon Nanotubes Induced By Photoexcited Hypochlorite." ECS Meeting Abstracts MA2022-01, no. 9 (2022): 733. http://dx.doi.org/10.1149/ma2022-019733mtgabs.

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Chemical functionalization of the sidewalls of single-wall carbon nanotubes remains a topic of current interest because it can modify and enhance nanotube optical properties. These modifications can shift SWCNT structure-specific optical transitions further into the near-infrared, which may prove useful for applications in bio-imaging or quantum information processing. Here we present a study on the use of photoexcited hypochlorite ions as a reactant to efficiently produce sparse oxygen-containing defects in SWCNTs. Our studies highlight the formation of new secondary reaction products in the

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Liang, Ying Chun, J. H. Dou, and Qing Shun Bai. "Molecular Dynamic Simulation Study of AFM Single-Wall Carbon Nanotube Tip-Surface Interactions." Key Engineering Materials 339 (May 2007): 206–10. http://dx.doi.org/10.4028/www.scientific.net/kem.339.206.

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Carbon nanotubes (CNTs) represent ideal Atomic Force Microscope (AFM) tip materials due to their remarkable mechanical properties. Dynamic interactions of a Single-wall Carbon nanotube (SWCNT) indenting towards a monocrystalline hydrogen-free Silicon surface (001) are investigated using molecular dynamic simulation. The critical strain and strain force along the axis of the tube from elastic to plastic regimes are calculated. The simulation shows the deform process in elastic regimes is similar to the process of two ends inward compressed. The atoms of nanotube tip adsorption to the Silicon su

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Maruyama, Takahiro, Hiroki Kondo, Akinari Kozawa, Takahiro Saida, Shigeya Naritsuka, and Sumio Iijima. "Growth Mechanism of Single-Walled Carbon Nanotubes from Pt Catalysts by Alcohol Catalytic CVD." MRS Proceedings 1752 (2015): 27–30. http://dx.doi.org/10.1557/opl.2015.43.

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ABSTRACTSingle-walled carbon nanotube (SWCNT) growth from Pt catalysts by an alcohol gas source method, a type of cold-wall chemical vapor deposition (CVD), was investigated. Raman results showed that the diameters of SWCNTs grown from Pt were below 1.2 nm, while transmission electron microscopy (TEM) showed that the diameters of most Pt catalyst particles were above 1.2 nm. This suggests that SWCNT diameters were smaller than Pt catalysts particles. X-ray photoelectron spectroscopy measurements showed that reduction of Pt particles occurred during the SWCNT growth. Based on these experimental

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ROY, SOUMYENDU, REETI BAJPAI, K. S. HAZRA, PADMNABH RAI, N. KULSRESTHA, and D. S. MISRA. "CONTROLLED GROWTH OF SEMICONDUCTING SINGLE-WALL CARBON NANOTUBE." International Journal of Nanoscience 10, no. 01n02 (2011): 35–38. http://dx.doi.org/10.1142/s0219581x11007624.

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SWCNT was synthesized by catalytic thermal CVD using Fe–Mo and Co–Mo bimetallic catalysts supported by MgO . The nanotubes were studied by SEM and HRTEM microscopy, thermogravimetric analysis, and Raman spectroscopy. The chiralities of the tubes were established from their Raman spectra using Kataura plot. The Raman shifts for the Co-catalyzed nanotubes were found to lie in the semiconducting region.

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Alizadehmojarad, Ali A., Sergei M. Bachilo, Anatoly Kolomeisky, and R. Bruce Weisman. "(Digital Presentation) Realistic Molecular Dynamics Modeling of ssDNA/SWCNT Hybrids." ECS Meeting Abstracts MA2022-01, no. 9 (2022): 715. http://dx.doi.org/10.1149/ma2022-019715mtgabs.

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Despite the importance of single-wall carbon nanotubes (SWCNTs) coated with short oligos of single-stranded DNA (ssDNA), the structure-specific interactions in these hybrids remain poorly understood. It is known that the interactions can depend on the DNA base sequence and length, and on the nanotube diameter and roll-up angle. To study these phenomena, we are applying a combination of computational and experimental methods. A major goal for guiding and validating molecular dynamics simulations of the hybrid structures is finding the average length of nanotube covered by each ssDNA oligo. We h

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KISHI, NAOKI, SHINYA KATO, TAKESHI SAITO, et al. "POLY(3, 4-ETHYLENEDIOXYTHIOPHENE): POLY(STYRENESULFONATE)/SINGLE-WALL CARBON NANOTUBE COMPOSITE FILM FOR THE HOLE TRANSPORT LAYER IN POLYMER SOLAR CELLS." Nano 06, no. 06 (2011): 583–88. http://dx.doi.org/10.1142/s1793292011002901.

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The composite thin film of poly(3, 4-ethylenedioxythiophene):poly(styrenesulfonate)/single-wall carbon nanotubes (PEDOT:PSS/SWCNTs) for a hole transport layer in polymer solar cells have been explored. PEDOT:PSS/SWCNT composite film exhibited higher electrical conductivity than the control PEDOT:PSS film, suggesting the increase in carrier transport passes through SWCNTs in the hole transport layer. We also demonstrated the improvement of a fill factor and short circuit current density in the polymer solar cells with the hole transport layer of PEDOT:PSS/SWCNT as compared with PEDOT:PSS.

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Adhikari, Chandra M., Da’Shawn M. Morris, Thomas W. Noonan, Tikaram Neupane, Basu R. Lamichhane, and Bhoj R. Gautam. "Dispersion in Single-Wall Carbon Nanotube Film: An Application of Bogoliubov–Valatin Transformation for Hamiltonian Diagonalization." Condensed Matter 8, no. 2 (2023): 53. http://dx.doi.org/10.3390/condmat8020053.

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We present a theoretical study on the energy dispersion of an ultrathin film of periodically-aligned single-walled carbon nanotubes (SWCNTs) with the help of the Bogoliubov–Valatin transformation. The Hamiltonian of the film was derived using the many-particle green function technique in the Matsubara frequency formalism. The periodic array of SWCNTs was embedded in a dielectric with comparatively higher permittivity than the substrate and the superstrate such that the SWCNT film became independent with the axis of quantization but keeps the thickness as the variable parameter, making the film

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