Monoclinic vanadium(IV) oxide (VO2) has received much attention for applications as intelligent solar control coatings, with the potential to reduce need both heating and air conditioning loads within building infrastructure. Chemical vapor deposition, a high-throughput industrially scalable method, is an ideal technology deposition of VO2 thin films on window panels. However, these suffer from poor adhesion are chemically susceptible attack. In addition, optimum modulation unfortunately...

Semiconductor heterojunctions are used in a wide range of applications including catalysis, sensors, and solar‐to‐chemical energy conversion devices. These materials can spatially separate photogenerated charge across the heterojunction boundary, inhibiting recombination processes synergistically enhancing their performance beyond individual components. In this work, WO 3 /TiO 2 grown by chemical vapor deposition is investigated. This consists highly nanostructured layer vertically aligned...

Multifunctional P-doped TiO2 thin films were synthesized by atmospheric pressure chemical vapor deposition (APCVD). This is the first example of with both P5+ and P3– states, relative proportion being determined synthesis conditions. technique to control oxidation state impurities presents a new approach achieve self-cleaning TCO properties. The origin electrical conductivity in these materials was correlated incorporation species, as suggested Hall Effect probe measurements. photocatalytic...

Brookite is the least investigated phase of TiO2 due to synthetic difficulty obtaining pure phase. Here, we present first ever chemical vapor deposition synthesis brookite thin films. The films were highly crystalline and as determined by X-ray diffraction Raman spectroscopy studies. Scanning electron microscopy studies showed have a structured morphology consisting pyramidal features. photocatalytic properties film, tested using stearic acid under UVA (365 nm) irradiation, superior both an...

A novel experimental method is presented to determine the optical efficiency and loss channels of a luminescent solar concentrator (LSC). Despite strong promise, LSCs have not yet reached their full potential due various mechanisms affecting device's efficiency. Among those channels, escape cone non-unity quantum yield losses are generally most dominant. To further advance field LSCs, it vital understand impact each independently. So far, researchers only characterized total in LSCs. Here,...

The adhesion and proliferation of bacteria on solid surfaces presents a major challenge in both healthcare industrial applications. In response to this problem, an effective simple method is reported fabricate superhydrophobic antibacterial copper coated polymer films via aerosol assisted chemical vapor deposition (AACVD). material characterized using range techniques including electron microscopy, water contact angle measurement elemental mapping. activity the modified film tested against...

We present a novel approach towards achieving high visible transmittance for vanadium dioxide (VO(2)) coated surfaces whilst maintaining the solar energy modulation required smart-window applications. Our method deviates from conventional approaches and utilizes subwavelength surface structures, based upon those on eyeballs of moths, that are engineered to exhibit broadband, polarization insensitive wide-angle antireflection properties. The moth-eye functionalised is expected benefit...

When the gas sensor active layer film thickness is decreased, increased sensitivity to changes in adsorbate concentration expected when measuring resistance of layer, particular this on order Debye length material (one–tens nanometers); however, demonstrated only for a limited number materials. Herein, ultrathin NiO films different thicknesses (8–21 nm) have been deposited via chemical vapor deposition fabricate devices. Sensor performance range NO2 concentrations (800 part-per-billion 7...

Mesoporous thin film architectures are an important class of materials that exhibit unique properties, which include high surface area, versatile functionalization, and bicontinuous percolation paths through a broad library pore arrangements on the 10 nm length scale. Although porosimetry bulk via sorption techniques is common practice, characterization mesoporous films with small sample volumes remains challenge. A range geared toward providing information over morphology, size...

Therapeutic drug monitoring enables personalized cancer medicine by dosing patients with chemotherapy based on the patient’s own unique rate of clearance and metabolic degradation. These rates significantly influence plasma concentration which influences patient outcomes. This is especially true for commonly used agent doxorubicin. The current state-of-the-art method to determine concentrations in blood high-performance liquid chromatography (HPLC). However, need specialized equipment...

The fabrication of highly efficient photocatalytic thin films has important consequences for self-cleaning, organic pollutant decomposition, and antimicrobial coatings a variety applications. Here, we developed simple synthesis method to produce efficient, high-surface-area zinc oxide (ZnO) using aerosol-assisted chemical vapor deposition. This approach used mixtures methanol acetic acid promote preferential growth exposure polar facets, which favor activity. Interestingly, the initial...

Recent studies have demonstrated the high efficiency through which nanostructured core–shell WO3/TiO2 (WT) heterojunctions can photocatalytically degrade model organic pollutants (stearic acid, QE ≈ 18% @ λ = 365 nm), and as such, has varied potential environmental antimicrobial applications. The key motivation herein is to connect theoretical calculations of charge transport phenomena, with experimental measures carrier behavior using transient absorption spectroscopy (TAS), develop a...

We investigate homeotropically aligned fluorophores and Förster resonance energy transfer (FRET) for luminescent solar concentrators using Monte-Carlo ray tracing. The homeotropic alignment strongly improves the trapping efficiency, while FRET circumvents low absorption at by separating emission processes. predict that this design doped with two organic dye molecules can yield a 82.9% optical efficiency improvement compared to single, arbitrarily oriented molecule. also show quantum dots are...

Generating mesoporous films with adequate film thickness and refractive index is a common method to achieve amplitude phase matching in low-cost interference-based antireflective coatings (ARCs). For high-surface-energy materials, pores on the 2–50 nm (i.e., subwavelength scale) are subject capillary condensation by surrounding gas water molecules, which hampers their functioning. In this work, we examine effect of relative humidity ARCs present simple for preparation robust operation under...

We demonstrate a simple and inexpensive method to fabricate flexible fluorophore-doped luminescent solar concentrators (LSCs). Polydimethylsiloxane (PDMS) serves as host material which additionally offers the potential cast LSCs in arbitrary shapes. The laser dye Pyrromethene 567 is used prototype fluorophore, it shown that has high quantum yield of 93% over concentration range investigated. optical efficiency loss channels are investigated; also demonstrated remains while bending LSC...

A single step chemical vapour deposition route to highly conductive, transparent and hazy Al doped ZnO.

Using a hybrid nanoscale/macroscale model, we simulate the efficiency of luminescent solar concentrator (LSC) which employs silver nanoparticles to enhance dye absorption and scatter incoming light. We show that normalized optical can be increased from 10.4% for single LSC 32.6% plasmonic with spheres immersed inside thin layer. Most enhancement is due scattering particles not absorption/re-emission.

Total neutron scattering has been used in conjunction with H/D and *N/15N isotopic substitution to determine the detailed liquid-state structures of pyridine naphthalene. Analysis data via an empirical potential-based structure refinement method allowed us interrogate full six-dimensional spatial orientational correlation surfaces these systems, thereby deduce fundamental effects a heteroatom aromatic core-size on intermolecular π-π interactions. We find that presence nitrogen heteroatom,...

Thin-layer chromatography (TLC) is one of the basic analytical procedures in chemistry and allows demonstration various chemical principles an educational setting. An often-overlooked aspect TLC capability to quantify isolated target compounds unknown sample. Here, we present a suitable route implement quantitative analysis lesson plan. We provide both stand-alone software online webapp that allow students obtain information from developed plate two experiments, namely, absorbance-based...

The authors evaluate and compare two 2-D array detectors for positron emission tomography (PET). Both consisted of an 8*8 small BGO crystals coupled to a 2*2 photomultiplier tubes. depth the was 3 cm in one detector 2 other. 2-cm is superior terms material costs, energy resolution per crystal, its ability clearly identify crystal containing primary interaction. A flexible robust algorithm presented identification such detectors. prospect obtaining still better spatial from block detectors,...

The processing of mesoporous inorganic coatings typically requires a high-temperature calcination step to remove organic precursors that are essential during the material assembly. Lowering fabrication energy costs and cutting back on necessary resources would provide greater scope for deployment in applications such as architectural glass, optical components, photovoltaic cells, storage, well further compatibilize substrates with low temperature stability. Organic removal methods based...

Theory and Langmuir isotherm analysis was used to explore the conformations molecular packing of alkyl all-<italic>cis</italic> 2,3,4,5,6-pentafluorocyclohexyl motifs, which are prepared by direct aryl hydrogenations from alkyl- or vinyl-pentafluoroaryl benzenes.

Nickel oxide (NiO) has good optical transparency and wide band-gap, due to the particular alignment of valence conduction band energies with typical current collector materials been used in solar cells as an efficient hole transport-electron blocking layer, where it is most commonly deposited via sol-gel or directly nanoparticles. An attractive alternative approach vapour deposition. This paper describes chemical deposition p-type nickel thin films using new CVD precursor [Ni(dmamp')2],...

We present novel concave Fabry Perot (FP) sensor arrays for photoacoustic imaging which were fabricated using a high-precision inkjet printing approach to produce the cavity and employed physical vapor deposition form dielectric mirrors. Our FP design provides excellent beam confinement within enabling high finesse thus sensitivity be achieved. Two such sensors are evaluated in terms of their acoustic bandwidth. A 66 μm thick is shown provide noise equivalent pressure (NEP) 85 Pa an...