Adhesion Of Films Research Articles

Design and development of graduated compression garment with adhesive stripes using 3D virtual fitting technology

PurposeThe goal of this research is to utilize 3D virtual fitting technology to design and develop a customized full leg sleeve with graduated compression and strategically placed adhesive stripes, aiming to improve training effectiveness by restricting bending movement in the leg.Design/methodology/approachKnitted fabric and polymer adhesive film were chosen for compression garment development. The design of adhesive stripes was based on Kinesio taping method. Pattern design and 3D visualization was performed using Modaris 3D (CAD Lectra). The compression values were determined by the Laplace equation. The compression full leg sleeve with and without the adhesive stripes were fitted on the virtual mannequin in the squat position in order to determine the influence of adhesive stripes for tensile load in longitudinal direction.FindingsThe compression values in a virtual garment varied from 23.17 ± 1.94 mmHg in the ankle girth to 13.41 ± 1.50 mmHg in the thigh girth. The difference did not exceed 3 mmHg compared to the planned pressure values. The obtained result showed that purposefully placed adhesive stripes significantly increased the tensile force in the longitudinal direction of the garment in a squat position, so it may improve training effectiveness.Research limitations/implications3D virtual fitting represents the fit on a solid body form, which may affect the accuracy of compression garment simulation, as the human body is not rigid.Originality/valueThe application of 3D virtual fitting technology in creating customized and functional garments demonstrates its unique contribution to garment prototyping and product development.

Convertibility and Barrier Performance of Novel Bio‐Based Extrusion‐Coated Paperboards

ABSTRACTConventional fossil fuel–based plastics for food packaging currently cause environmental concerns owing to poor recyclability and degradability, and new strategies are being developed to address these issues. One strategy involves the use of bioresources to produce bio‐based plastics that exhibit similar performance with enhanced sustainability. However, the understanding of the properties of these materials remains limited. Consequently, the convertibility and barrier properties of three extrusion‐coated paperboards before and after creasing were examined in this study. Each coating was composed of a partially bio‐based polymer:low‐density polyethylene (Bio‐PE) and two polybutylene succinate (PBS) grades. All materials demonstrated high oil resistance and low water absorbency (Cobb1800). Certain creased samples of Bio‐PE unexpectedly exhibited a higher barrier to oxygen than the unconverted material, whereas the results for the PBS grades were more consistent. In contrast, Bio‐PE provided a superior barrier to water vapour compared with PBS. The tests indicated that conversion did not reduce the material barrier properties, as confirmed by the negligible surface damage observed using scanning electron microscopy. The issues encountered were attributed to deviations in the production quality of Bio‐PE and insufficient adhesion of both PBS films to the substrate. Although further research is required for improving the coating uniformity and adhesion to substrate, the materials exhibit potential to advance the sustainable packaging.

Correlation between interfacial bonding behavior and surface treatments in bonded carbon fiber composite joints

AbstractSurface treatments play a crucial role in enhancing the bonding strength of composites. The effect of surface treatment has received much attention in the literature but reported effect of combined treatments are less prevalent. Therefore, this work explored the correlation between plasma, sanding, porous release film treatments, its combination and bonding behavior in bonded carbon fiber composite joints. The bonding performance of composites was predominantly affected by three mechanisms: chemical cross‐linking, chemical adsorption and mechanical interlocking. The bonding strength was enhanced after plasma treatment through the increased polar functional groups and surface wettability, resulting in a 7% (28.6 MPa) improvement compared to untreated samples. Sanding and porous release film treated surfaces exhibited increased roughness and mechanical interlocking, with strength up to 29.5 and 38.7 MPa enhancement in shear strength. Furthermore, plasma and sanding treatments removed surface contaminants and enhanced the bonding strength. Plasma treatment on surfaces treated with porous release film led to a slight decrease in bonding strength (35.9 MPa), as the deep valleys were changed into shallow ones by plasma. Spearman correlation analysis was used to establish the relationship between characterization parameters and shear strength. The results revealed a robust correlation between surface roughness and strength, highlighting its potential for predicting bonding performance.Highlights Comprehensive investigations on the correlation between surface treating techniques and bonding behaviors. The shear strength increased as the integrity of adhesive film decreased. Roughness has the most robust correlation with shear strength.

Mechanical and corrosion behaviour of Al7075 alloy reinforced with SiC and cenosphere particles

Hybrid composites are novel composites that can meet the demands of cutting-edge applications. They may be utilized to meet advanced applications by maximizing weight reduction by reducing adhesive film weight and performance through increased characteristics. The mechanical and corrosion study of Al 7075 hybrid metal matrix composites reinforced with weight percentage (wt.%) of silicon carbide 2, 4, 6, and 8 and 5 wt.% of cenosphere is studied in this work. Composites prepared by the liquid metallurgy route were studied at room temperature to estimate seawater's hardness, tensile strength, and corrosion rate for various silicon carbide (SiC) inclusions using the electrochemical method. The results revealed that an Al7075 hybrid composite reinforced with 6 wt.% SiC had a higher tensile strength of 263 MPa, an increase of approximately 43 MPa (20%) over the basic alloy. The hardness of the Al7075/SiC/cenosphere composite was 128 HV with the addition of wt.% SiC reinforcement. The actual density of the Al 7075/SiC/Cenosphere composite has resulted in increased density compared to the as-cast base metal. According to polarization characteristics in natural seawater, aluminum alloy reinforced with 8 wt.% SiC demonstrated an efficiency of 58.67%, whereas electrochemical impedance measurements in natural seawater indicated 76.91%. The hybrid Al7075 composite with 8 wt.% SiC has a reduced corrosion rate in saltwater compared to pure alloy. Tafel Polarization experiments demonstrate that the hybrid metal matrix composite with 8 wt.% SiC corroded at a lower rate than the base alloy. According to the micrographs, the SiC reinforcement with the matrix alloy reduced corrosion by forming strong interfacial and intermetallic bonding.

Preparation of sandwich-structured V6O13via direct current magnetron sputtering for high-capacity zinc-ion batteries.

Aqueous zinc-ion batteries are an appealing electrochemical energy storage solution due to their affordability and safety. Significant attention has been focused on vanadium oxide cathode materials for ZIBs, owing to their high specific capacity, unique layered or tunnel structures, and low cost. Compared to traditional methods for preparing and assembling electrode materials, direct current (DC) magnetron sputtering allows direct synthesis and uniform deposition on current collectors, offering advantages such as simplicity, mild reaction conditions, and strong film adhesion. Therefore, we synthesized sandwich-structured vanadium oxides (V6O13) with a V-O framework on stainless steel using this method, and for the first time, employed them as cathode materials for zinc-ion batteries. The unique crystal structure of V6O13 features numerous ion diffusion channels, providing ample sites for zinc ion embedding. Additionally, the multiple valence states of vanadium in V6O13 contribute to its high specific capacity and excellent coulombic efficiency during the charge/discharge process. The V6O13 synthesized at 400 °C in 3% O2 exhibits the highest specific capacity (550 mA h g-1 at 100 mA g-1). This synthesis strategy demonstrates significant application potential and offers a new pathway for the fabrication of other oxide thin-film electrode materials.

Development of Robust MWCNT Hydrogel Electrochemical Biosensor for Pyocyanin Detection by Phosphotungstic Acid Modification.

The trace detection of pyocyanin (PCN) is crucial for infection control, and electrochemical sensing technology holds strong potential for application in this field. A pivotal challenge in utilizing carbon materials within electrochemical sensors lies in constructing carbon-based films with robust adhesion. To address this issue, a novel composite hydrogel consisting of multi-walled carbon nanotubes/polyvinyl alcohol/phosphotungstic acid (MWCNTs/PVA/PTA) was proposed in this study, resulting in the preparation of a highly sensitive and stable PCN electrochemical sensor. The sensor is capable of achieving stable and continuous detection of PCN within the range of 5-100 μM across a variety of complex electrolyte environments. The limit of detection (LOD) is as low as 1.67 μM in PBS solution, 2.71 μM in LB broth, and 3.63 μM in artificial saliva. It was demonstrated that the introduction of PTA can complex with PVA through hydrogen bonding to form a stabilized hydrogel architecture, effectively addressing issues related to inadequate film adhesion and unstable sensing characteristics observed with MWCNTs/PVA alone. By adjusting the content of PTA within the hydrogel, an increase followed by a subsequent decrease in sensing current response was observed, elucidating how PTA regulates the active sites and conductive network of MWCNTs on the sensor surface. This study provides a new strategy for constructing stable carbon-based electrochemical sensors and offers feasible assistance towards advancing PCN electrochemical sensors for practical applications.

One-Component polyurethane adhesive filled with milled carbon fibre and its effect on hydrothermal stability of beech-glued joints

ABSTRACT The effect of fibres of various lengths, thicknesses, origins, and quantities on mechanical and other properties of polymer matrices is well-known, including carbon fibres. These were used in the form of milled carbon fibres (MCF) to fill a one-component polyurethane (1C-PUR) commercial adhesive to determine hydrothermal resistance of beech-bonded joints tested in shear. The effect of MCF (1%, 3%, 5%, and 7%) was first tested on thin adhesive films before and after exposure to cold water (20°C) and boiling (wet state test and after drying). A good bond of 1C-PUR to MCF was demonstrated, with tensile mechanical properties significantly increased after the addition of 3% and 5% MCF in all tested environments. The aqueous environment, especially boiling water, led to a deterioration in mechanical properties, but after drying, there was a recovery and, in many composite films, an improvement. This was due to a change in adhesive’s domain structure, as demonstrated by differential scanning calorimetry. An increase in hydrothermal resistance of glued wood joints with MCF (1%, 3%, and 5%) was not demonstrated based on tensile shear strength. However, considering the achieved wood failure, it was proven that MCF has a positive effect on stress transfer into the wood adherend.

In-situ growth process and corrosion resistance of steam coatings on the surface of LA103Z Mg-Li alloy

ABSTRACT This study explores the impact of steam treatment temperature on the structure and properties of steam coatings (SC) formed on the surface of Mg-Li alloys. Steam coatings were synthesised on LA103Z Mg-Li alloys at various temperatures (80°C, 90°C, 100°C, 110°C, 120°C) using a steam treatment method. The films’ morphology and phase composition were characterised by SEM, EDS, XRD, and FT-IR techniques, while their corrosion resistance was assessed through hydrogen evolution and immersion tests. Additionally, the growth and corrosion protection mechanisms of the steam coatings were analysed. The results demonstrate that increasing the steam treatment temperature enhances the film thickness and uniformity. However, temperatures above 110°C lead to crack formation and reduced film adhesion. Notably, films prepared at 110°C exhibited the best corrosion resistance, as evidenced by the hydrogen evolution tests. These findings suggest that steam treatment at 110°C yields the most effective SC for corrosion protection on LA103Z Mg-Li alloys.

Adhesive Temperature-Sensitive Paint Films for Aerodynamic Heating Measurements

Temperature-sensitive paint (TSP) films are developed via application of the TSP to 0.11-mm-thick polyvinyl-chloride films with an adhesive backing. This approach allows the TSP to be quickly replaced on models if surface damage occurs during testing, which is common in impulse facilities used to create hypersonic flow conditions. This work demonstrates that quantitative calibration of the TSP signal is still possible and that only the top coat of TSP is necessary for application to the thermally insulative films, which aids in simplifying heat flux calculations. The TSP film is also compared to infrared thermography of a 20° cone in Mach 7 flow, which demonstrates practical use in an aerodynamic setting. Overall, this approach may yield better calibration capabilities and higher measurement throughput and quality.

Microstructure Regulation and Fabrication of Epoxy-based Conductive Films with Excellent Electrical and Thermal Conductivity, Adhesion, Toughness, and Flexibility

The electrically conductive adhesive films (ECAFs) are new materials used for large-format bonding in microelectronics packaging. However, improving its electrical and thermal conductivity, adhesion, and flexibility simultaneously has been a challenge. In this study, silver powder with different particle sizes and poly(3,4-ethylenedioxythiophene)/poly(styrene sulfonate) (PEDOT/PSS) were used to create a high-efficient multi-scale conductive bridge structure. This reduced the volume resistivity from 7.30×10-4 Ω·cm to 3.80×10-4 Ω·cm, with lower silver powder content. The thermal conductivity improved from 9.074 W/m·K to 9.124 W/m·K, and adhesion performance between the epoxy matrix and the metal increased from 6.85 MPa to 8.08 MPa. Furthermore, the addition of hydroxyl-functionalized polyurethane materials enhanced the toughness without significantly affecting its electrical, thermal, and adhesion properties. This study successfully prepared epoxy-based conductive adhesive films with a combination of electrical conductivity, thermal conductivity, adhesion, and flexibility, while significantly reducing costs due to the reduction in silver powder content.

Facile coating of low-molecular-weight stretchable adhesive films leveraging carbodiimide-to-urea conversion and gallic acid for enhanced adhesion

We present a simple method for bonding an elastomer substrates using a stretchable, low-molecular-weight adhesive. By mixing 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (EDC) and gallic acid on an aminated surface, EDC is converted into...

Investigation of film thickness uniformity in inkjet printing of liquid optically clear adhesive

The inkjet printing process of liquid optically clear adhesive film often leads to the phenomenon of end protrusions, which cause bubbles during subsequent bonding and encapsulation processes or localized Mura defects. To gain a deeper understanding of the mechanism behind the formation of protrusions during film retracts, we derived a dynamic model for the formation of end protrusions in the film. This research also simulated the coalescence of multiple droplets into a film line, including protrusion formation, using the volume of fluid method. The simulation results were compared with theoretical calculations, revealing that the theoretical values were approximately twice as large as the simulated ones. We discovered that the formation of protrusions is the result of the interaction between surface tension and internal forces within the liquid film. During this process, the maximum height of the film line exhibits a positive correlation with the power of time. Finally, the influence of contact angle on the uniformity of film thickness was also explored. It was found that a smaller contact angle can suppress the occurrence of protrusions, leading to a significant improvement in the uniformity of film thickness.

Optimization of Ingredients in Polystyrene Waste-Based Adhesive for Wood-to-Wood Bonding Using Experimental Planning

In this study, an adhesive was prepared using waste polystyrene foam for wood-to-wood bonding. The effects of natural rubber (NR) and methylene diphenyl diisocyanate (MDI) content on adhesion were investigated. NR modifies polystyrene, acting as a plasticizer to address its hardness and brittleness, while MDI functions as a curing agent for the adhesive system. Characteristics such as the viscosity and wettability of the liquid adhesive were determined. Differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FTIR) were employed to evaluate the properties and structure of the resulting adhesive films. The bonding ability between two wood plates using this adhesive was evaluated through tensile shear strength and impact strength. An experimental plan was devised to identify the optimal content of NR and MDI, providing the highest tensile shear strength and impact strength of the bond. The research revealed that the highest tensile shear strength achieved was 3.87 N/mm² at 16.468% NR and 7.882 phr MDI, while the highest impact strength reached 15.352 kJ/m² with NR and MDI contents of 16.079% and 7.620 phr, respectively. The experimental planning models demonstrated a good fit for predicting tensile shear strength and impact strength.

Pattern of surface energy (tension) change after coating/printing on a pretreated (Low Density /Linear Low Density Poly Ethylene) co‐extruded plastic film surface and its consequences on lamination and overprinting

AbstractThis study embodies the characterization of corona‐treated co‐extruded transparent polyethylene films at different voltages after printing with five different colors to inspect whether variations in surface polarities have any influence on the behavior of the ink coatings. The variation in the coating weights of the differently colored inks' was studied as a function of surface energies of the films and found to lie within the range of 0.925–2.7 g/m2 (GSM), irrespective of surface energies of the films. The surface energies of the respective ink coatings were also determined separately, which were then compared with the surface energies of the corona‐treated co‐extruded plastic films under study. Additionally, the force of adhesion of the ink films over the treated film, at any particular wattage was determined, which varied as white > magenta > cyan > yellow > black. Other surface characteristics of the ink coatings, such as contact angle, coefficient of friction, scuff resistance, were also investigated. The barrier properties, mechanical, and ageing characteristics of the ink coated‐treated plastics films were found not to get impacted upon much by the influence of coating on their surfaces.Highlights Subsequent Processing like lamination and overprinting. Corona Pre‐treatment LD/LLDPE co‐extruded film. Scuffing characteristics of the printed (with different colored inks) pre‐treated (corona) LD/LLDPE films. Interlocking through its chemisorptive/ adsorptive forces. For all colored films, the kinetic C.OF. suffered a small increase with surface treatment level.

Preparing and Characterizing of Xyloglucan Films Containing Tea Extract for Oral Mucositis.

This study aimed to prepare films using Xyloglucan (Xylo) and tea extract (TE) to treat aphthous stomatitis without causing discomfort. Xylo, which gelates by adding polyphenol, was used as a gelation agent, and TE, which contains epigallocatechin-3-gallate (EGCG) with antioxidant properties, was used as an active pharmaceutical agent. Two kinds of films, hydrogel and xerogel films, were prepared by mixing various amounts of Xylo and TE. Their gelling behavior and physicochemical properties were evaluated. The sol-gel transition temperature increased with increased TE content, and the rupture strength of the films increased with increasing Xylo and TE concentrations. Rapid water absorption and high adhesiveness were observed during the reconstruction process from the xerogel to the hydrogel. The concentrations of Xylo and TE controlled the formulations' physicochemical properties and the EGCG release rate. These results concluded that the xerogel prepared by using Xylo and TE could be applied as an oral mucosal adherent film formulation.

Development of a Deployable Reflector Antenna for the Synthetic Aperture Radar Satellite, Part 2: Manufacturing and Qualification of the Main Reflector Using a Honeycomb Sandwich Composite Structure

A deployable reflector antenna (DR-A) is a structure that can be stored in a large-diameter Synthetic Aperture Radar (SAR) antenna and be mounted onto a launch vehicle. Considering the performance of the launch vehicle, it is necessary to develop a lightweight, high-performance antenna structure. The solid-type deployable reflector antenna is composed of a number of unit main reflectors. To reduce the weight of the antenna, a lightweight main reflector must be developed. In this paper, following “Development of Deployable Reflector Antenna for the SAR Satellite (Part 1)”, the manufacturing and qualification of the main reflector using honeycomb sandwich composites are described. Four types of composite main reflectors were manufactured with variables in the manufacturing process. The manufacturing variables include the curing process of the structure, the application of an adhesive film between the sheet and the core, and the venting path inside of the sandwich core. After manufacturing the main reflector, we performed weight measurements, non-destructive testing (NDT), surface error measurement using a Coordinate Measurement Machine (CMM), and modal testing for each type of composite main reflector. Through the research and development process, we found that a perforated hole is necessary when excluding the adhesive film during bonding of an aramid core and a CFRP sheet, and a lightweight composite reflector could be developed through this process. We selected the main reflector with the best performance and developed a composite main reflector that can be applied to satellites.

Application of Olivine Powder as a Filler for Silicone Pressure-Sensitive Adhesives

In this work, new self-adhesive materials were obtained based on cross-linked silicone self-adhesives obtained by modifying the composition with the addition of a silicon filler, olivine. Silicone pressure-sensitive resin DOWSIL 7358 was used as a basis and modified with various amounts of olivine. New materials (self-adhesive tape samples) were characterized in terms of peel adhesion, tack, cohesion at room and elevated temperatures, SAFT test (shear adhesion failure temperature), pot life (storage stability), and shrinkage (dimensional stability). During the tests, an increase in thermal resistance (>225 °C) and a drastic reduction in shrinkage values (below 0.5%) were noted for all modified samples tested. All tests were performed in compliance with international standards, e.g., FINAT FTM 1, FINAT FTM 8, FINAT FTM 9, FINAT FTM 14, and GTF 6001. This allows us to conclude that the new material has significant application potential due to the good performance results. The results of adhesion and tack were in ranges accepted in the PSA industry, cohesion was kept at an unchanged level (above 72 h), and a great increase in the thermal resistance was observed (from 147 °C for pure resin to high above 225 °C for even the smallest additions of the olivine powder. Moreover, the shrinkage of prepared adhesive films was reduced significantly. In the available literature, there are no references to the modification of adhesives using powdered silicon minerals of natural origin, which is a novelty due to their higher bulk density compared to commercial powdered silicon fillers.

Study on the painting methods, amount and thermal properties of waterborne acrylic paint on bamboo-laminated lumber for furniture

In order to understand the finishing effect of Waterborne Acrylic Paint under different painting methods and amount, bamboo-laminated lumber for furniture was coated with waterborne acrylic paint, then the effects of different painting methods and amount on the drying rate, smoothness, hardness, adhesion and wear resistance of the paint film were investigated. Further, the mechanism of film formation was described by thermal property analysis using thermogravimetry and differential scanning calorimeter. The results show that different painting methods have little effect on film properties, the drying time of primer and topcoat are not affected by them, which is 8/8.5 min for primer surface/solid and 6.5/7 min for topcoats. The film surface hardness and adhesion can reach B and 0 grade, the best wear resistance of the film is 51.24 mg·100 r−1 when using one-layer primer one-layer topcoat. Different coating amount has great influence on film properties, the drying speed of the film increases with the increase of the painting amount. The film properties reach the best when the painting amount is 80 g/m2, while too little painting amount leads to the decrease of hardness, and too much leads to the wear resistance weaken. Thermal analysis of the primer and topcoat show that water decomposition occurs at 100 ℃ and thermal decomposition of organic components occur at 350 ℃. Topcoats have better thermal stability than primers higher than that of topcoat, the topcoat displayed better thermal stability than the primer.

A Nitrogen-Doped CuWO4 Photoanode with Oriented Crystal Growth for Efficient Visible-Light-Driven Water Oxidation

A photoanode capable of efficiently promoting water oxidation is a key essence for realizing a photoelectrochemical (PEC) water splitting system for hydrogen production. Copper tungsten oxide, CuWO4 is a superior photoanode material with a narrower band gap (2.2- 2.4 eV) than BiVO4 (~ 2.4 eV) and WO3 (~ 2.7 eV) studied extensively as photoanodes for water oxidation. In the last decade, many efforts have been devoted to developing efficient CuWO4-based photoanodes by elements doping and surface treatments. However, there has been no report on nitrogen doping CuWO4 for improving its PEC performance. Recently, we have reported a unique preparation technique (a mixed metal-imidazole casting; MiMIC) to form rigidly adhering metal oxides films on electrode substrates by casting precursor methanol solutions (or suspensions) of the corresponding metal ions in the presence of imidazole derivatives followed by annealing.1) Imidazole derivatives were reported to act as a binder for metal oxide nanoparticles to be well-interconnected and nitrogen source for N-doping for synthesis of N-doped BiVO4.2) Herein we report effects of N-doping into a CuWO4 photoanode on its electronic property and PEC performance for efficient water oxidation CuWO4.The N-doped CuWO4 photoanode was prepared using a MiMIC method. The top view SEM images of the CuWO4 films with different fraction (Fim = 0 ~ 50%) of imidazole derivatives in precursor solutions showed that the particle size decreased from 1 to 0.1 μm with secondary particle decay. PEC properties were measured using a single-chamber cell in the three-electrode configuration under solar simulated irradiation. The photocurrent density (0.21 mA cm-2 at 1.23 V vs. RHE) for the N-doped CuWO4 photoanode with Fim of 33% is higher than that (0.04 mA cm-2) for a CuWO4 photoanode (Fim = 0%). An onset wavelength of an IPCE action spectrum for the CuWO4 photoanode (Fim = 33%) was longer than the CuWO4 photoanode (Fim = 0%) due to nitrogen doping.1) Z. N. Zahran, T. Katsuki, M. Yagi, et al., ACS Appl Energy Mater, 2022, 5, 2, 1894.2) T. Eo, T. Katsuki, Z. N. Zahran, M. Yagi, et al., ACS Appl Energy Mater, 2021, 4, 4, 2983.

Convolutional neural network for colorimetric glucose detection using a smartphone and novel multilayer polyvinyl film microfluidic device

Detecting glucose levels is crucial for diabetes patients as it enables timely and effective management, preventing complications and promoting overall health. In this endeavor, we have designed a novel, affordable point-of-care diagnostic device utilizing microfluidic principles, a smartphone camera, and established laboratory colorimetric methods for accurate glucose estimation. Our proposed microfluidic device comprises layers of adhesive poly-vinyl films stacked on a poly methyl methacrylate (PMMA) base sheet, with micro-channel contours precision-cut using a cutting printer. Employing the gold standard glucose-oxidase/peroxidase reaction on this microfluidic platform, we achieve enzymatic glucose determination. The resulting colored complex, formed by phenol and 4-aminoantipyrine in the presence of hydrogen peroxide generated during glucose oxidation, is captured at various glucose concentrations using a smartphone camera. Raw images are processed and utilized as input data for a 2-D convolutional neural network (CNN) deep learning classifier, demonstrating an impressive 95% overall accuracy against new images. The glucose predictions done by CNN are compared with ISO 15197:2013/2015 gold standard norms. Furthermore, the classifier exhibits outstanding precision, recall, and F1 score of 94%, 93%, and 93%, respectively, as validated through our study, showcasing its exceptional predictive capability. Next, a user-friendly smartphone application named “GLUCOLENS AI” was developed to capture images, perform image processing, and communicate with cloud server containing the CNN classifier. The developed CNN model can be successfully used as a pre-trained model for future glucose concentration predictions.