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The impact of carbon quantum dots derived from spent coffee grounds on the droplet combustion of diesel/n-butanol blend.
Heliyon
November 2024
Group of Advanced Materials and Energy, Faculty of Engineering, Instituto Tecnológico Metropolitano, Street 54A No 30-01, Medellín, 050536, Colombia.
Article Synopsis
- As concerns about climate change and the depletion of fossil fuels grow, additives like butanol and carbon quantum dots (CQD) are being used to improve internal combustion engine efficiency and reduce emissions.
- A study evaluated the effects of CQD, made from spent coffee grounds and mixed with n-butanol, on the combustion characteristics of commercial diesel fuel, revealing that these additives increased ignition delay but also led to unstable combustion patterns.
- Despite the instability, CQD were found to help mitigate micro-explosions, enhance fuel evaporation, and promote more stable combustion, which could improve performance in Compression Ignition (CI) engines.
MAPLE-Deposited Perylene Diimide Derivative Based Layers for Optoelectronic Applications.
Nanomaterials (Basel)
October 2024
National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania.
Nowadays, the development of devices based on organic materials is an interesting research challenge. The performance of such devices is strongly influenced by material selection, material properties, design, and the manufacturing process. Usually, buckminsterfullerene (C60) is employed as electron transport material in organic photovoltaic (OPV) devices due to its high mobility.
View Article and Find Full Text PDFInvestigation of Delefilcon A Contact Lenses for Symptomatic Daily Disposable Contact Lens Wearers with Dry Eye Disease: A Prospective Comparative Study.
Clin Ophthalmol
October 2024
Centre for Ocular Research & Education (CORE), School of Optometry & Vision Science, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada.
Purpose: This prospective comparative study aimed to assess the effects on contact lens comfort, dryness, and wear time when symptomatic daily disposable (DD) contact lens (CL) wearers were refit with delefilcon A (DT1) lenses.
Patients And Methods: Thirty five symptomatic DD CL wearers with dry eye disease as determined according to the TFOS DEWS 2 guidelines, were enrolled and completed the study. Participants wore their habitual DD CLs during an initial assessment and were subsequently refit with DT1 for 1 month.
Innovative temperature-responsive membrane with an elastic interface for biofouling mitigation in industrial circulating cooling water treatment.
Water Res
December 2024
State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China. Electronic address:
Article Synopsis
- TFC membrane filtration systems are being explored for cooling water treatment due to their strong separation capabilities, but are hindered by biofouling issues.
- A novel approach combines temperature-responsive Pnipam and an antibacterial agent (Ag) into TFC membranes, significantly increasing their ability to kill bacteria and reducing fouling.
- Temperature changes enhance membrane performance by creating barriers that prevent bacterial adhesion and allow for easier cleaning, achieving impressive sterilization rates while protecting membrane integrity.
Deformation dynamics of nanopores upon water imbibition.
Proc Natl Acad Sci U S A
September 2024
Institute for Materials and X-ray Physics, Hamburg University of Technology, Hamburg 21073, Germany.
Capillarity-driven transport in nanoporous solids is widespread in nature and crucial for modern liquid-infused engineering materials. During imbibition, curved menisci driven by high negative Laplace pressures exert an enormous contractile load on the porous matrix. Due to the challenge of simultaneously monitoring imbibition and deformation with high spatial resolution, the resulting coupling of solid elasticity to liquid capillarity has remained largely unexplored.
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