A5100381942- Carbon Nanotubes in Composites
- Graphene research and applications
- Nanowire Synthesis and Applications
- Nanomaterials and Printing Technologies
- Diamond and Carbon-based Materials Research
- Biosensors and Analytical Detection
- Molecular Junctions and Nanostructures
- Semiconductor materials and interfaces
- Electrochemical Analysis and Applications
- Organic Electronics and Photovoltaics
- nanoparticles nucleation surface interactions
- Advanced biosensing and bioanalysis techniques
- Conducting polymers and applications
- Advancements in Battery Materials
- Extraction and Separation Processes
- Nanotechnology research and applications
- Neuroscience and Neural Engineering
- Polydiacetylene-based materials and applications
- Advanced Battery Materials and Technologies
- Thin-Film Transistor Technologies
- Infection Control and Ventilation
- Advanced Sensor and Energy Harvesting Materials
- Nanopore and Nanochannel Transport Studies
- Theoretical and Computational Physics
- Fullerene Chemistry and Applications
Aalto University
2017-2024
Honda (United States)
2023
Institute of Physics
2020
Chinese Academy of Sciences
2020
University of Chinese Academy of Sciences
2020
Google (United States)
2018
Manufacturing of high performance transparent conducting electrodes from very long and a proportion individual SWCNTs using the ethylene floating catalyst CVD process.
In floating catalyst chemical vapor deposition (FC-CVD), tuning chirality distribution and obtaining narrow of single-walled carbon nanotubes (SWCNTs) is challenging. Herein, by introducing various amount CO2 in FC-CVD using CO as a source, we have succeeded directly synthesizing SWCNT films with tunable well colors. particular, 0.25 0.37 volume percent CO2, the display green brown colors, respectively. We ascribed colors to suitable diameter SWCNTs. Additionally, optimizing reactor...
Single-walled carbon nanotube (SWCNT) films are promising materials as flexible transparent conductive (TCFs). Here, inspired by the extrusion blown plastic film technique and SWCNT synthesis approach floating catalyst chemical vapor deposition (FCCVD), a novel aerosol (BACVD) method is reported to directly continuously produce freestanding TCFs at several hundred meters per hour. The mechanism, involving blowing stable bubble transforming into an aerogel, investigated, general phase diagram...
Abstract The floating catalyst chemical vapor deposition (FCCVD) method for producing single‐walled carbon nanotubes (SWNTs) has demonstrated great potential in transparent conductive film (TCF) application. In FCCVD, reducing the concentration of (CNTs) is a well‐agreed improving conductivity SWNT TCF, achieved by thinner and longer CNT bundles. However, this decreases yield dramatically, which persisted throughout TCF development. Here, production large‐diameter double‐walled (DWNT) TCFs...
We report the high yield production of highly conductive and transparent single-walled carbon nanotube films from ethanol by FCCVD method.
We prepare disposable single-walled carbon nanotube network electrodes for the detection of potent opioid fentanyl, currently a leading cause overdose deaths in USA. show repeatable dry transfer (SWCNT) networks to produce robust electrodes. This process directly produces highly conductive SWCNT without need any further modifications required conventional The realized electrode showed low background currents combined with spontaneous enrichment resulting high signal-to-noise ratio. With this...
Carbon nanotube face mask filters have strong and uniform hydrophobicity, high durability, thermal conductivity exhibit excellent barrier antiviral effects against SARS-CoV-2. The nanocarbon filter functions as a superior compared to those in conventional masks owing the stronger, more uniform, durable hydrophobic nature of carbon nanotubes. A tightly knit network has pore size smaller than that average coronavirus; nevertheless, breathability is equal polypropylene filter. exceptional...
High-purity semiconducting single-walled carbon nanotubes (s-SWCNTs) are of paramount significance for the fabrication high-performance electronics. Here, we present continuous production high-purity, long, and isolated s-SWCNTs by gas-phase synthesis, retaining pristine morphologies as-synthesized nanotubes. The were synthesized at ca. 920 °C using ethanol methanol as source growth enhancer, respectively in N2 H2. purity as-produced with a mean length 15.2 μm can reach 98% determined...
Abstract Single-walled carbon nanotube (SWCNT) transparent conducting films (TCFs) are attracting increasing attention due to their exceptional optoelectronic properties. Toluene is a proposed source for SWCNT synthesis, but the growth parameters of SWCNTs and TCF performance (i.e., sheet resistance versus transmittance) have been insufficiently evaluated. Here, we first time reported systematic study fabrication high-performance TCFs using toluene alone as source. The mechanisms behind each...
Abstract Optimized geometry of single‐walled carbon nanotubes (SWCNTs) is vital to high‐performance transparent conductive films (TCFs). Herein, the SWCNTs, i.e., tube diameter, bundle length, and are successfully tuned by introducing dioxide (CO 2 ) into floating catalyst chemical vapor deposition (FC‐CVD), where monoxide (CO) used as a source ferrocene precursor. Both diameter length increase with an increment CO concentration, yield SWCNTs can be significantly promoted appropriate amount...
Abstract Although single‐wall carbon nanotubes (SWCNTs) exhibit various colors in suspension, directly synthesized SWCNT films usually appear black. Recently, a unique one‐step method for fabricating green and brown has been developed. Such remarkable progress, however, brought up several new questions. The coloration mechanism, potentially achievable colors, color controllability of SWCNTs are unknown. Here, quantitative model is reported that can predict the specific unambiguously identify...
We report floating catalyst chemical vapour deposition synthesis of single-walled carbon nanotubes (SWCNTs) for high-performance transparent conducting films (TCFs) using low feeding rate precursor solution. Herein, ethanol acts as source, ferrocene and thiophene growth promoter, respectively. By adopting a 4 µl min-1, the fabricated TCFs present one lowest sheet resistances ca 78 Ω sq.-1. at 90% transmittance. Optical characterizations demonstrate that mean diameter high-quality SWCNTs is...
Transparent and conductive films (TCFs) are of great technological importance. Their high transmittance, electrical conductivity, mechanical strength make single-walled carbon nanotubes (SWCNTs) a good candidate for the raw material TCFs. Despite ballistic transport in individual SWCNTs, conductivity SWCNT networks is limited by low efficiency charge tunneling between tube elements. Here, we demonstrate that nanotube network sheet resistance at optical transmittance decreased more than 50%...
Floating-catalyst CVD (FCCVD) is a highly promising technique for the scalable synthesis of single-walled carbon nanotubes (SWCNTs). The number concentration (NC) catalyst particles one process parameters which mainly influences yield as-produced SWCNTs. In conventional FCCVD methods, are usually synthesized by thermal decomposition organometallic compounds inside reactor. Being in-situ formation in FCCVD, it an open question that how many SWCNTs single particle can grow? Herein, we employed...
The surging demand for lithium, driven by the expanding market electric vehicles and electronic devices, necessitates efficient lithium extraction methods. A reverse lithium-ion battery (RLiB) method, utilizing a sieve to directly extract Li+ from brine, offers advantages of high selectivity environmental friendliness. However, implementation RLiB systems has been hindered limited cycling stability LiMn2O4 material. This study addresses this challenge introducing novel RA-LiMn2O4 material...
Abstract The large‐scale synthesis of high‐purity semiconducting single‐walled carbon nanotubes (s‐SWCNTs) plays a crucial role in fabricating high‐performance and multiapplication‐scenario electronics. This work develops straightforward, continuous, scalable method to synthesize individual s‐SWCNTs with small‐diameters distribution (≈1 nm). It is believed that the water dioxide resulting from decomposition isopropanol act as oxidizing agents selectively etch metallic SWCNTs, hence enhancing...
Semiconducting single-walled carbon nanotubes (s-SWCNTs) are highly desirable for thin-film transistors (TFTs). However, controllable and high-yield synthesis of s-SWCNTs remains a challenge. Herein, we develop an aerosol etching strategy to prepare SWCNTs with high semiconducting ratio. SWCNTs, premade by floating catalyst chemical vapor deposition (FCCVD), selectively etched dioxide (CO2) in phase. Both absorption Raman spectra indicate the decrease metallic (m-SWCNTs), electron...
Abstract In this work, a fast approach for the fabrication of hundreds ultraclean field‐effect transistors (FETs) is introduced, using single‐walled carbon nanotubes (SWCNTs). The synthesis nanomaterial performed by floating‐catalyst chemical vapor deposition, which employed to fabricate high‐performance thin‐film transistors. Combined with palladium metal bottom contacts, transport properties individual SWCNTs are directly unveiled. resulting SWCNT‐based FETs exhibit mean mobility, 3.3...
High-resolution nondestructive chemical analysis of both bulk and surface application-ready carbon nanomaterials is needed to connect the material properties observed performance. This enable application-specific tailoring nanomaterials. However, detailed studies effects oxidizing treatments on composition structural integrity metal seed materials are rare. We show here a hybrid X-ray-based study retrieving this hard-to-access information ferrocene-grown single-walled nanotubes their nitric...