Abstract Background Diabetic wounds present persistent clinical challenges characterized by disrupted extracellular matrix (ECM) homeostasis, which critically impedes tissue regeneration. While bone marrow-derived mesenchymal stem cells (BMSCs) exhibit therapeutic potential through ECM remodeling, conventional transplantation strategies are limited suboptimal cell retention and transient effects. Methods BMSCs cultured on Flexcell plates were subjected to programmable mechanical stretching...

A unique sensing device, which couples microscale pillars with quartz crystal microbalance (QCM) substrate to form a resonant system, is developed achieve several orders of magnitude enhancement in sensitivity compared conventional QCM sensors. In this research, Polymethyl Methacrylate (PMMA) micropillars are fabricated on using nanoimprinting lithography. The effects pillar geometry and physical properties, tuned by molecular weight (MW) PMMA, the characteristics QCM-micropillars device...

We report a method to significantly enhance the mass sensitivity of quartz crystal microbalance (QCM) device in which Polymethyl Methacrylate (PMMA) micropillars were fabricated on QCM surface form two-degrees-of-freedom vibration system. PMMA using nanoimprinting lithography technology. The QCM-micropillar coupled system exhibits unique resonant frequency, near can be enhanced by several orders magnitude. Both numerical simulation and theoretical analysis conducted understand this...

A quantitative characterization of the wetting states droplets on hydrophobic textured surfaces requires direct measurement liquid penetration into surface cavities, which is challenging. Here, use quartz crystal microbalance (QCM) technology reported for depth a micropillar-patterned surface. The actual liquid–air interface droplet was established by freezing and characterizing it using cryogenically focused ion beam/scanning electron microscope (cryo FIB-SEM) technique. It found that...

Abstract Dropwise condensation (DWC) on hydrophobic surfaces is attracting attention for its great potential in many industrial applications, such as steam power plants, water desalination, and de-icing of aerodynamic surfaces, to list a few. The direct dynamic characterization liquid/solid interaction can significantly accelerate the progress toward full understanding thermal mass transport mechanisms during DWC processes. This work reports novel Quartz Crystal Microbalance (QCM) based...

This work focuses on the study of effect hydrophobicity water flow in carbon nanotubes (CNTs) using a molecular dynamics (MD) approach for wide range potential applications such as purification and high efficiency nanofluid energy absorption systems (NEAS). The between liquid surface CNTs was characterized by interaction-energy-coefficient (IEC)—a parameter describing interaction strength molecules atoms. It is shown that static contact angles decrease from 155° to 44° when values IEC...

Development of new sensing techniques to achieve the lowest detection limit analyte is vital for clinical measurements, such as drug testing, tumor indicators, thyroidstimulating hormone, and similar immunoassay examinations. It has been reported that a polymer micropillar array appended quartz crystal microbalance substrate (QCM-P) forms twodegree-of-freedom vibration system was able significantly improve sensitivity conventional QCM systems. This paper focuses on development theoretical...

Quartz crystal microbalance (QCM) device is a highly sensitive mass sensor (sensitivity: 0.5 ng/cm2) with wide range of applications including biosensing, thin film deposition, surface chemistry, volatile organic compounds (VOC) and gaseous analytes detection. A recent study shows that several orders magnitude improvement in sensitivity can be achieved by attaching microscale Polymethyl methacrylate (PMMA) pillars onto the QCM (QCM-P) to form two-degree freedom coupled resonant system. In...

A high throughput manufacturing process to magnetically assembling nanowire (NW) network into paraffin was developed for enhancing conductivity in phase change materials (PCMs) used energy storage applications. The prefabricated nickel NWs were dispersed melted followed by magnetic alignment under a strong field. Measuring electrical of the nanocomposite, as well observing cross section sample slice an optical microscope characterized NWs. As comparison, particles (NPs) based nanocomposites...

Low-cost black coating with freestanding well-aligned carbon nanotubes (CNTs), fabricated from CNT-dispersive in water-soluble poly(vinyl alcohol) (PVA) matrix, exhibits a bright white-light emission narrow-band RGB (red, green, blue) colors having CIE (0.327, 0.349) chromaticity coordinate when subjected to the microwave irradiation.

We used the spin-coating method combined with ultrasonic atomization as a continuous, one-step process to generate two-dimensional honeycomb network that was constructed from pure multi-walled carbon nanotubes.

Abstract We report the sonophysically‐exfoliated methods access to preparation of homogeneous‐free multi‐walled carbon nanotubes (MWCNTs) in water solution. Highly stable, uniform, individual MWCNTs are entirely performed through sodium dodecylsulfate surfactants by means a tip sinicator. HRTEM images show that crystalline finger walls CNTs apparently observed. Raman spectrum shows so‐called G '‐band, associated with metallic electronic structure, was significantly observed at 2644 cm −1...

This work reports a novel Quartz Crystal Microbalance (QCM) based method to analyze the droplet-micropillar surface interaction quantitatively during dropwise condensation. A combined nanoimprinting lithography and chemical treatment approach was utilized directly fabricate micropillar superhydrophobic on QCM substrate. The normalized frequency shift of device microscopic observation corresponding nucleation, drop growth, coalescence processes clearly demonstrate different characteristics...

Acoustic wave sensors are being developed for many emerging applications such as in semiconductor fabrication, biological diagnostics and polymer characterization. Traditional acoustic sensing devices quartz crystal microbalance (QCM) rely on thin films coated plates to detect chemical agents. It has been found that significant sensitivity enhancement of QCM can be achieved by simply attaching a micropillar film onto the substrate (QCM-P) enable unique coupled resonance between micropillars...