A method for the reliable fabrication of less than 200 nm thick, free-standing purified-SWNT films having large surface areas exceeding several cm2 is described. Films were characterized using a variety optical, microscopic and spectroscopic methods. The procedure was also used to prepare thin as-prepared, acid-cut octadecylamine (ODA) functionalized SWNTs. Such samples allow facile transmission measurements SWNT derived solids.

<title>Abstract</title> Achieving robust low-resistance electrical contact with carbon fibres embedded in polymeric matrices is a challenge and different electrode fabrication methods, mostly for after composites are cured have been examined the literature. This paper investigates use of metallic foils co-cured on top surface fibre reinforced polymer (CFRP) to form stable electrodes. Different materials effects their geometry variation CFRP interface resistance (IR) studied experimentally....

Abstract Solid-state supercapacitors (SSC) are pivotal in modern energy storage technologies due to their high power density, rapid charge–discharge cycles, and extended lifespan. They can be used both structural flexible configurations with innovative applications across industries. For practical applications, SSCs need preserve electrochemical performance at elevated service temperatures. Therefore, the interplay effect of temperatures on investigated. In this work, for first time, a...

Exposure of thin films as-prepared single-walled carbon nanotubes (SWNT) to nitric acid induces dramatic bleaching the first and second interband transitions semiconducting tubes (S1 S2). These near-IR absorption features can be restored by annealing treated SWNT elevated temperatures. Annealing may also accomplished visible laser irradiation thus allowing for spatially resolved modifications film optical absorption.

A simple method of fabricating pristine few-layer and single-layer graphene which could be used for production on a gram scale is described.

Pure graphene in the form of few-layer (FLG) – 1 to 6 layers is biocompatible and non-cytotoxic. This makes FLG an ideal material incorporate into dental polymers increase their strength durability. It well known that has high mechanical been shown enhance mechanical, physical chemical properties biomaterials. However, for commercial applicability, methods produce larger than lab-scale quantities are required. Here, we present a simple method make large starting with commercially available...

Photoluminescence (PL) laser microscopy was applied to determine optical transition energies ${E}_{11}$ and ${E}_{22}$ of individual semiconducting single-walled carbon nanotubes (SWNTs) suspended on top nanotube ``forests,'' grown by chemical vapor deposition (CVD) silicon substrates. A uniform increase 40--55 $24--48\phantom{\rule{0.3em}{0ex}}\mathrm{meV}$, respectively, found for 19 different $(n,m)$ species in air or a vacuum---relative SWNTs reference water-surfactant dispersion....

Photocleavable polymers based on 9,9-dialkylfluorene backbone and o-nitrobenzylether were designed synthesized to obtain stable (n,m) enriched suspensions of semiconducting SWNTs in toluene. Photoirradiation the triggered precipitation TEM images indicate close packing pointing at partial removal coating polymer.

Burning a honeycomb: An exceptional hybrid organic–inorganic coordination assembly with an extended 3D structure that contains vast separated organic and inorganic regions has been prepared (see picture of its supramolecular scanning electron micrograph image). This is used as template in thermolysis reactions to yield nano- microsized products whose properties are determined by those the precursor compounds. Supporting information for this article available on WWW under...

Pores for thought! Thermolysis of a 3D coordination network MnII/MnIII produces novel spongelike morphology manganese oxide by degassing mechanism (see picture). This porous material shows high capacitance when used as an anode in Li-ion battery and efficient catalytic activity cyclohexene oxidation. Detailed facts importance to specialist readers are published ”Supporting Information”. Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted the authors....

Abstract Polyoxometalates (POM) are anionic oxoclusters of early transition metals that great interest for a variety applications, including the development sensors and catalysts. A crucial step in use POM functional materials is production composites can be further processed into complex materials, e.g. by printing on different substrates. In this work, we present an immobilization approach POMs involves two key processes: first, stable encapsulation pores mesoporous silica nanoparticles...

We show that a trimethylsilyl (TMS) self-assembled monolayer on silicon surface is self-developing positive resist, which can be patterned with low energy electrons. Contact angle measurements have been used to quantify the efficiency of exposure as function dose and acceleration voltage. Ash formation was negligible, 3-aminopropyltriethoxysilane (APTES) could formed area without an intermediate development stage. APTES/TMS patterns visualized scanning electron microscopy at atomic force...

The mechanical properties of free standing films as prepared and acid purified single-walled carbon nanotubes were studied by means tensile stress measurements well electron microscopy. Films appear to fail crack propagation involving rupture or matrix pull-out bridging nanotube bundles.

Functional copolymer decorated with pyrene and phenylboronicacid groups was synthesized utilized to evenly disperse SWCNTs in water. Additionally, a self-healing conductive hydrogel prepared by dynamic cross-linking of the functional copolymer, PVA aqueous solution.

Ga+ focused ion beam (FIB) patterning was used to structure highly oriented pyrolytic graphite surfaces with square, periodic arrays of amorphous carbon defects (mesh sizes: 300 nm–2 µm). Controlled oxygen etching these leads matrices uniform, orientationally aligned, nm-sized, hexagonal holes. The properties the resulting hole assembly (hole depths and lateral dimensions) have been investigated by means atomic force microscopy, scanning electron microscopy FIB sectioning. dimensions...

Single-walled carbon nanotubes (SWCNTs) are attractive building blocks for molecular electronics and novel materials. Generating functional architectures with SWCNTs requires methodologies dispersing, purifying, binding these highly insoluble quasi one-dimensional molecules. We have previously shown that unstructured DNA strands bind to so tightly it is difficult address them complementary strands. Here we show hairpin oligonucleotides give SWCNT suspensions more concentrated than those...

Hydrogen, widely recognized as an efficient and clean energy carrier, holds significant promise for transforming future systems. Despite advances in hydrogen production cost reduction, challenges storage continue to impede its widespread adoption. Traditional methods, such high-pressure tanks liquid hydrogen, have limitations related high resource costs. Solid-state materials offer a safer more reliable alternative under various operating conditions. This review article provides in-depth...

Carbon nanotubes (CNTs) have atomically smooth surfaces and tend not to form covalent bonds with composite matrix materials. Thus, it is the magnitude of CNT/fiber interfacial strength that limits amount nanomechanical interlocking when using conventional CNTs improve structural behavior materials through reinforcement. This arises from two well-known, long standing problems in this research field: (a) inhomogeneous dispersion filler, which can lead aggregation (b) insufficient reinforcement...

Two monolanthanide-containing polyanions based on monolacunary Keggin germanotungstates [Ln(H2O) n GeW11O39]5- (Ln = Dy, Er, 4,3) have been synthesized in simple one-pot synthetic procedure and compositionally characterized solid state by single-crystal X-ray diffraction, powder Fourier transform infrared spectroscopy, thermogravimetric analysis, elemental analysis. Electronic absorption emission spectra of the title compounds solution were also studied. The [DyIII(H2O)4GeW11O39]5- POM...

Molecular oxygen etching of HOPG surfaces prepatterned by Ga(+) focused-ion-beam irradiation (FIB) has been used to generate large-area arrays nanometer-sized graphite blocks. AFM and SEM imaging show that structures with lateral sizes down ~100 nm heights between 30 55 can be routinely fabricated. The trenches separating the blocks form in early oxidation stages via preferential gasification (into CO CO(2)) gridlike amorphized carbon regions written FIB. In later oxidative stages, nanoprism...