Mechanoreceptors Research Articles

AudioGest: Gesture-based Interaction for Virtual Reality using Audio Devices.

Current virtual reality (VR) system takes gesture interaction based on camera, handle and touch screen as one of the mainstream interaction methods, which can provide accurate gesture input for it. However, limited by application forms and the volume of devices, these methods cannot extend the interaction area to such surfaces as walls and tables. To address the above challenge, we propose AudioGest, a portable, plug-and-play system that detects the audio signal generated by finger tapping and sliding on the surface through a set of microphone devices without extensive calibration. First, an audio synthesis-recognition pipeline based on micro-contact dynamics simulation is constructed to generate modal audio synthesis from different materials and physical properties. Then the accuracy and effectiveness of the synthetic audio are verified by mixing the synthetic audio with real audio proportionally as the training sets. Finally, a series of desktop office applications are developed to demonstrate the application potential of AudioGest's scalability and versatility in VR scenarios.

ВПЛИВ МЕРЧАНДАЙЗИНГУ НА ПОВЕДІНКУ ПОКУПЦІВ

The purpose of the article is to investigate modern methods and tools of merchandising, as well as to determine the effectiveness of their influence on buyers. The article examines the role and significance of merchandising as an effective and necessary tool of marketing communications at points of sale. Considered how merchandising affects the behavior, psychological state, emotions, perception and satisfaction of buyers. Peculiarities, goals and tasks, objects, subjects, elements and forms of merchandising were studied. Merchandising has been found to influence consumer behavior, emotions, perceptions, and satisfaction levels using various techniques and tools such as colors, shapes, sizes, contrasts, symmetry, proportions, rhythm, harmony, and various social influences and interactions between people. Merchandising must also take into account cultural characteristics and differences that influence consumer behavior and choice. Examples of the use of modern effective merchandising techniques by the domestic trade network aimed at attracting buyers and stimulating them to spontaneous and additional purchases are given. It was determined that an individual approach to design, the use of different styles of store equipment, the creation of an atmosphere that corresponds to the theme, history, culture or aesthetics of the store promotes the interest of buyers, turns the usual process of purchasing goods into an exciting experience, family leisure or a themed trip. The modern trends and prospects of merchandising in the conditions when there are more and more stores and the preferences of buyers are changing more and more quickly have been determined. It is noted that in merchandising it is necessary to use new technologies, such as virtual reality, augmented reality, artificial intelligence, big data, mobile applications, QR codes, RFID tags, NFC chips, electronic price tags, interactive displays, touch screens, voice assistants, recognition of faces, gestures, emotions, etc. Recommendations on the use of modern effective methods and tools of merchandising at the points of sale have been developed.

Architectural design and affecting factors of MXene-based textronics for real-world application.

Today, textile-based wearable electronic devices (textronics) have been developed by taking advantage of nanotechnology and textile substrates. Textile substrates offer flexibility, air permeability, breathability, and wearability, whereas, using nanomaterials offers numerous functional properties, like electrical conductivity, hydrophobicity, touch sensitivity, self-healing properties, joule heating properties, and many more. For these reasons, textronics have been extensively used in many applications. Recently, new emerging two-dimensional (2D) transition metal carbide and nitride, known as MXene, nanomaterials have been highly considered for developing textronics because the surface functional groups and hydrophilicity of MXene nanoflakes allow the facile fabrication of MXene-based textronics. In addition, MXene nanosheets possess excellent electroconductivity and mechanical properties as well as large surface area, which also give numerous opportunities to develop novel functional MXene/textile-based wearable electronic devices. Therefore, this review summarizes the recent advancements in the architectural design of MXene-based textronics, like fiber, yarn, and fabric. Regarding the fabrication of MXene/textile composites, numerous factors affect the functional properties (e.g. fabric structure, MXene size, etc.). All the crucial affecting parameters, which should be chosen carefully during the fabrication process, are critically discussed here. Next, the recent applications of MXene-based textronics in supercapacitors, thermotherapy, and sensors are elaborately delineated. Finally, the existing challenges and future scopes associated with the development of MXene-based textronics are presented.

Effect of touch screen tablet use on fine motor functions in children with hemiparetic cerebral palsy: A randomized controlled trial.

Cerebral palsy is the most frequent condition affecting the central nervous system and causing large disability. To determine the impact of touch screen tablet upon fine motor functions in children with hemiparesis. This was a randomized controlled trial involving 60 children, ranging in age from 5 to 7 years old, randomized into two groups: intervention or control group (30 children per group). Both groups were given 12 consecutive weeks of designed fine motor tasks. Additionally, for thirty minutes, the intervention group was given a fine motor exercise program on a touch screen tablet. Upper limb function, finger dexterity and pinch strength were measured pre and post the recommended treatment program using the quality of upper extremity skill test (QUEST), Nine-Hole Peg Test and Jamar hydraulic pinch gauge, respectively. All outcome measures were equivalent between intervention groups at admission (P > 0.05). Significant improvements were found in all assessed variables within the two groups. Meanwhile, the intervention group had significantly higher improvements (P < 0.05) in finger dexterity, pinch strength, and upper limb function when compared with the control groups. Including a touch screen smart tablet application with a specially designed fine motor program is an effective method that helps children with U-CP perform more effectively with their fine motor skills.

Ruptured liquid metal microcapsules enabling hybridized silver nanowire networks towards high-performance deformable transparent conductors.

Extensive studies have been carried out on silver nanowires (AgNWs) in view of their impressive conductivity and highly flexible one-dimensional structure. They are seen as a promising choice for producing deformable transparent conductors. Nonetheless, the widespread adoption of AgNW-based transparent conductors is hindered by critical challenges represented by the significant contact resistance at the nanowire junctions and inadequate interfacial adhesion between the nanowires and the substrate. This study presents a novel solution to tackle the aforementioned challenges by capitalizing on liquid metal microcapsules (LMMs). Upon exposure to acid vapor, the encapsulated LMMs rupture, releasing the fluid LM which then forms a metallic overlay and hybridizes with the underlying Ag network. As a result, a transparent conductive film with greatly enhanced electrical and mechanical properties was obtained. The transparent conductor displays negligible resistance variation even after undergoing chemical stability, adhesion, and bending tests, and ultrasonic treatment. This indicates its outstanding adhesion strength to the substrate and mechanical flexibility. The exceptional electrical properties and robust mechanical stability of the transparent conductor position it as an ideal choice for direct integration into flexible touch panels and wearable strain sensors, as evidenced in this study. By resolving the critical challenges in this field, the proposed strategy establishes a compelling roadmap to navigate the development of high-performance AgNW-based transparent conductors, setting a solid foundation for further advancement in the field of deformable electronics.

Multi-role conductive hydrogels for flexible transducers regulated by MOFs for monitoring human activities and electronic skin functions.

Metal organic frameworks (MOFs) have garnered significant attention in the development of stretchable and wearable conductive hydrogels for flexible transducers. However, MOFs used in hydrogel networks have been hampered by low mechanical performance and poor dispersibility in aqueous solutions, which affect the performance of hydrogels, including low toughness, limited self-recovery, short working ranges, low conductivity, and prolonged response-recovery times. To address these shortcomings, a novel approach was adopted in which micelle co-polymerization was used for the ex situ synthesis of Zn-MOF-based hydrogels with exceptional stretchability, robust toughness, anti-fatigue properties, and commendable conductivity. This breakthrough involved the ex situ integration of Zn-MOFs into hydrophobically cross-linked polymer chains. Here the micelles of EHDDAB had two functions, first they uniformly dispersed the Zn-MOFs and secondly they dynamically cross-linked the polymer chains, profoundly influencing the mechanical characteristics of the hydrogels. The non-covalent synergistic interactions introduced by Zn-MOFs endowed the hydrogels with the capacity for high stretchability, high stress, rapid self-recovery, anti-fatigue properties, and conductivity, all achieved without external stimuli. Furthermore, hydrogels based on Zn-MOFs can serve as durable and highly sensitive flexible transducers, adept at detecting diverse mechanical deformations with swift response-recovery times and high gauge factor values. Consequently, these hydrogels can be tailored to function as wearable strain sensors capable of sensing significant human joint movements, such as wrist bending, and motions involving the wrist, fingers, and elbows. Similarly, they excel at monitoring subtle human motions, such as speech pronunciation, distinguishing between different words, as well as detecting swallowing and larynx vibrations during various activities. Beyond these applications, the hydrogels exhibit proficiency in distinguishing and reproducing various written words with reliability. The Zn-MOF-based hydrogels hold promising potential for development in electronic skin, medical monitoring, soft robotics, and flexible touch panels.

Baroreceptor-Inspired Microneedle Skin Patch for Pressure-Controlled Drug Release.

Objective: We have developed a baroreceptor-inspired microneedle skin patch for pressure-controlled drug release. Impact Statement: This design is inspired by the skin baroreceptors, which are mechanosensitive elements of the peripheral nervous system. We adopt the finger touching to trigger the electric stimulation, ensuring a fast-response and user-friendly administration with potentially minimal off-target effects. Introduction: Chronic skin diseases bring about large, recurrent skin damage and often require convenient and timely transdermal treatment. Traditional methods lack spatiotemporal controllable dosage, leaving a risk of skin irritation or drug resistance issues. Methods: The patch consists of drug-containing microneedles and stretchable electrode array. The electrode array, integrated with the piezoconductive switch and flexible battery, provides a mild electric current only at the spot that is pressed. Drugs in microneedles will then flow along the current into the skin tissues. The stretchable feature also provides the mechanical robustness and electric stability of the device on large skin area. Results: This device delivers Cy3 dye in pig skin with spatiotemporally controlled dosage, showing ~8 times higher fluorescence intensity than the passive delivery. We also deliver insulin and observe the reduction of the blood glucose level in the mouse model upon pressing. Compared with passive delivery without pressing, the dosage of drugs released by the simulation is 2.83 times higher. Conclusion: This baroreceptor-inspired microneedle skin patch acts as a good example of the biomimicking microneedle device in the precise control of the drug release profile at the spatiotemporal resolution.

ElliQ, an AI-Driven Social Robot to Alleviate Loneliness: Progress and Lessons Learned.

Loneliness is a significant issue in older adults and can increase the risk of morbidity and mortality. To present the development of ElliQ, a proactive, AI-driven social robot with multiple social and health coaching functions specifically designed to address loneliness and support older people. ElliQ, a consumer robot with a friendly appearance, uses voice, sounds, light, and buttons through a touch screen to facilitate conversation, music, video calls, well-being assessments, stress reduction, cognitive games, and health reminders. The robot was deployed by 15 government agencies in the USA. Initial experience suggests it is not only highly engaging for older people but may be able to improve their quality of life and reduce loneliness. In addition, the development of a weekly report that patients can share with their clinicians to allow better integration into routine care is described. This paper describes the development and real-world implementation of this product innovation and discusses challenges encountered and future directions.

Design and preparation of a thematic showcase on alien species at the Museum of Zoology of the University of Catania (Italy)

As part of the Interreg FAST (Fight Alien Species Transborder) project, in which the Zoology Museum of the University of Catania (Italy) is involved, in the Museum main room a thematic exhibition relating to alien species, also equipped with interactive supports, has been planned. This action is part of the communication strategy of the aforementioned project, providing for the promotion of Citizen Science initiatives that bring all citizens closer to this problem, increasing their awareness and participation. Some of the most representative and iconic animals linked to this issue will be exhibited within this space. Visitors will be able to observe both vertebrates such as the Nutria (Myocastor coypus Molina, 1782) or the American pond turtle (Trachemys scripta Thunberg in Schoepff, 1792), and invertebrates such as the Red palm weevil (Rhynchophorus ferrugineus Olivier, 1790) or the Louisiana red crayfish (Procambarus clarkii Girard, 1852). Also, a large poster illustrating all the species of alien birds in Europe will complete the exhibition, which will also be accompanied by information panels in Italian and English regarding not only the animals on display but also the aims and objectives of the FAST project. Adjacent to the exhibition space an 80-inch touch screen monitor will be installed with a software, also for children, for the recognition of native and alien species, accompanied by information collected in a database on alien invasive species present in Sicily and in Malta.

Research on Mobile Phone Touch Screen Defect Detection Based on Image Enhancement

Research on Mobile Phone Touch Screen Defect Detection Based on Image Enhancement

Bumps and Dents are Not Perceptually Opposite When Exploring With Lateral Force Cues.

Virtual tactile bumps and dents are presented by controlling frictional forces on a surface tactile display, a flat touch screen with tactile feedback functions. This technology enables users to touch and feel three-dimensional objects. The resistive force against a sliding finger is increased and then decreased compared to a base level to present a bump. The order of increase and decrease is inverted for a dent. Thus, the difference between bump and dent presentations lies in the change order of the resistive force. However, bumps and dents are not simply opposite when investigating psychophysical functions with only lateral force cues available, without height and depth information. The results demonstrate that bumps are more easily detected with high surface gradients or resultant force changes and small widths. In contrast, these parameters do not influence the detection of dents among different participants. These findings contribute to a deeper understanding of tactile perception of surface shapes.

Acidente ofídico em equinos no Bioma Amazônico, Pará, Brasil

ABSTRACT: Bothrops atrox is the most common viper in the Amazon, and its venom causes local and systemic changes. This report describes the clinicopathological and laboratory findings of ophidism due to Bothrops in six horses in Pará, Brazil. The animals, which belonged to five different rural properties, showed clinical signs of apathy, anorexia, and increased touch sensitivity in areas of increased volume. Three animals were bitten in the distal part of the pelvic limbs and three in the head area. The affected animals in the distal limb area exhibited marked edema extending from the fetlock to the thigh and had difficulty moving. Those affected in the head region exhibited an increase in volume that gave the appearance of a “rhinoceros head,” as well as blackening of the mucosa of the lips and gums. All animals exhibited tachycardia and tachypnea, and laboratory findings of two animals showed anemia, leukocytosis, increased clotting time, and elevated liver (AST and GGT) and kidney enzymes (urea and creatinine). Treatment was ineffective, and three of four treated animals died. Necropsy was performed on three animals, revealing extensive hemorrhage in the tissues at the snake bite sites and incoagulable bloody fluid in the cavities. Congestion was observed in the diaphragm, in the serosa of the small intestine, and in lighter areas on the renal surface. Histopathology showed muscle degeneration, necrosis, acute tubular necrosis, hemorrhage, and hyaline casts in the kidneys. This case report highlights the clinicopathological findings of snakebite in horses. In addition, this seems to be the first report of bothropic envenom in a mule in Brazil.

Literature Review: Digital Books in Preschool Period

In literature, the new generation of children who become exposed to a digital world are referred to as digital natives. This generation, which knows about touch screens, sensor lights, and programmed fixtures that produce water when they connect, grows up with the abilities to utilize electronic gadgets since the beginning of their life. Over time, numerous daily actions are transferred to the digital environment in order to satisfy their desires and needs. Children can now play games in front of a screen, as opposed to playing games with their friends mostly outside, in parks, or on the streets. One of the significant instances of this present circumstance are advanced picture story books. There are many examinations about the constructive outcomes of printed picture books on preschoolers’ language, mental, social and profound improvement in youth. This situation can be explained in part by the fact that printed books have been around for a very long time. There hasn't been a comprehensive survey study on digital children's books in the literature. As a result, it is now imperative that postgraduate thesis studies on digital books for preschoolers in Turkey need to be examined. A total of 265 thesis studies, which were accessed using the keywords of digital children's books, electronic children's books, electronic books, children's picture books, were examined and accessed through the https://tez.yok.gov.tr/UlusalTezMerkezi/ site, which allows postgraduate thesis and dissertations to be stored and scanned. Studies on digital books that focus on preschool children are separated. A systematic content analysis of 12 disaggregated postgraduate thesis studies was carried out under the headings of publication year, department, type of thesis and dissertations, sample group, research purpose and method. As a result of the research, it was revealed that the first thesis work on the subject was done in 2012. When the types of theses were examined, 5 doctoral level thesis studies and 7 master's level thesis studies were reached. When the sample groups were examined, it was concluded that the distribution of girls and boys was balanced. However, no study was found involving children with disabilities and families with preschool children. While there are 6 thesis studies in the Visual Arts Department, it turns out that there are 4 studies in the Preschool Department, and one study in the fields of Psychology and Computer Instructional Technologies. Due to the limited number of studies on the subject, it is recommended to develop them in terms of quality and quantity. Children with disabilities can be included in the studies. In addition, the subject can be investigated in depth by using the triangulation data collection method, which includes families, teachers and children.

Performance Evaluation of Hybrid MQL-Brass Nano-Fluid Coolant on Aisi 304 SS for Efficient Machining Operation

Brass Nanofluid is a substance made from synthetic copper and zinc powder. It has outstanding mechanical, electrical, thermal and optical qualities employed in a variety of applications including, solar, touch screen, bison. The nanoparticles used in this study were developed from brass alloy which was locally sourced and machined to the required nano-size of 40 µm. A top-down strategy was used for the preparation of nanofluid and ball milling utilized to ground the brass alloy and sieved after grinding using a 40 µm sleeve. A double approach strategy was applied to prepare the nanofluid and the sonification process of brass nanofluid was conducted using ultra sonic equipment. The result shows that the light paraffin oil with varying concentration percentage of brass alloy and conventional cutting fluid (castrole oil) with varying concentration percentage of brass alloy display similar performance. Optimizing the additive ratio of nano particle provided better outcomes identified in the range of 2-10g with 200 ml of cutting fluid. This improves the surface roughness finish of machined part while inclusion of brass nano particle with cutting fluid improves the material removal rate, reduce the temperature and the cutting zone providing a guaranteed finish product compared to other base fluid.

An Implementation of a Single Board Computer as a Home Vital Sign Monitoring System Using a Raspberry-Pi

Health monitoring and related technologies are a growing area of research. The embedded technology enables designing and manufacturing a single board computer (SBC) based vital signs monitoring system prototype. This study aims to develop and test an equipped with a monitor of vital signs, including electrocardiogram, heart rate (HR), respiratory rate (RR), and body temperature. The results showed that the prototype could work well, all parameters could be displayed on the 7" TFT touch screen, and the operation used Bahasa instructions. Qualitative test results show all the parts and the function is working correctly. Quantitative heart rate test results show an accuracy of 95% with a range of 30-200 bpm and 93% for the temperature parameter.

Maturity stages detection prototype device for classifying custard apple (Annona squamosa L) fruit using image processing approach

Custard apple (Annona squamosa L.) is commercially grown for its sweetness, delicacy, and nutraceutical benefits across the world. Fruit must be harvested from trees before the climacteric stage begins for stabilizing the maturation process and perishability, which otherwise restricts longer shelf–life. Therefore, maturity–based grading or classifying custard apple fruit in accordance with their ripening is required for commercial marketing and industrial storage purposes. This is a crucial task that agriculturists and the food processing industries must have to perform manually, which is ineffective and susceptible to human errors. In this research, we have proposed an image processing–based maturity stages detection prototype device for fruit classification of custard apple (Cv. Balanagar) based on changes in their physical, chemical and imaging features (skin color of fruit areoles). The newly developed handheld device comprises of a Raspberry Pi board, camera module, LCD touch screen, and image processing algorithms to identify five essential maturity stages i.e. 0 %, 25 %, 50 %, 75 % and 100 % areoles opening of custard apple. The images were pre–processed and segmented, after which imaging aspects of custard apple fruit including relative R, G and B components were extracted and their relationship with chemical properties such as TSS was established. For classification of captured images, K–means clustering and SVM algorithms were performed on Raspberry Pi Platform with model training and classifier codes in Python (3.9.6) to get desired results. The statistical analysis revealed a substantial difference between the maturity stages in terms of R, G and TSS. Overall, 100 % accuracy was accomplished with respect to the grading of custard apple fruit at varied maturity. This could be a low–cost device useful for farm–level custard apple fruit classification, minimising economic losses caused by faulty supply entering the marketing chain. With slight modifications in algorithms, this device could also be used to assess the maturity of other fruit crops. It could be also an alternative to several expensive approaches being used for automating the maturity grading process that is not feasible, particularly for farmers working in field conditions.

Use of screens, sedentary lifestyle, and physical activity in children under six years of age, during the period of preventive and compulsory social isolation in AMBA: online survey

Within the context of the COVID-19 pandemic, children were confined to their homes. The Buenos Aires Metropolitan Area (AMBA) region has the highest urban density in Argentina and has been the epicenter of COVID-19 infections and deaths. The objectives of this study are to characterize the habits of screen use, sedentary lifestyle and physical activity and describe their associations, in children under six years of age from AMBA, Argentina. analytical and cross-sectional study, in which data from the online survey (Google Forms®) were used. Through a non-probabilistic convenience sampling, fathers, mothers, legal guardians, and caregivers of children under six years of age were invited to participate. The survey was available during four months of the quarantine period and was made up of 31 questions about screen use, physical activity, and sedentary lifestyle of children. 256 surveys were answered, the majority (79.6%) were female and 50.8% in the age range of 31-40 years. The television is the most used and children begin to use touch screens from one year. The play time of adults with children and the time that they usually carry out activities such as reading a book or drawing is one to two hours per day. There was an association between owning the screen and using it for more hours. The lower the income level, the more time adults play with their children.

Facile one-step spraying preparation of fluorine-free transparent superhydrophobic composite coatings with tunable adhesion for self-cleaning and anti-icing applications

Transparent superhydrophobic coatings are of vital importance for various rising applications, such as photovoltaics, touch panels, smart windows, etc. However, their large-scale practical applications are severely restricted by hazardous fluorinated reagents, multistep preparation procedures, thermal treatment requirements, and poor durability. In this study, a facile one-step spraying method was proposed to fabricate transparent superhydrophobic coatings on various substrates, using an integrated fluorine-free suspension composed of siloxane-containing acrylate copolymers and SiO2 nanoparticles. Thanks to the incorporation of siloxane groups in the copolymers, the prepared coatings can be cured at room temperature without any thermal curing procedure. The resultant coatings exhibit excellent superhydrophobicity and high transparency, with a WCA of 162.2 ± 1.8° and ∼90.83 % transmittance at 550 nm, respectively. Besides, superhydrophobic surfaces with tunable water adhesion can be achieved by adjusting spray pressure. After a series of mechanical durability tests and chemical stability tests, the obtained coatings can still maintain their superhydrophobicity and high transparency. Moreover, the water freezing time on the coated glass can be extended and the ice adhesion strength was significantly reduced, exhibiting excellent anti-icing performance. The facile, fluorine-free, and one-step spraying coating method has scalability and universality, demonstrating the promising prospect of large-scale application in industry.

Superhydrophobic, mechanically durable, highly transparent surface covered with CuO/PDMS composite nano-tips using one-step wet oxidation process of Cu/PDMS multilayer

In this study, a mechanically durable, transparent, and superhydrophobic CuO/polydimethylsiloxane (PDMS) composite nano-tips surface was fabricated by a wet oxidation process of a Cu/PDMS multilayer structure. A growth mechanism for the CuO/PDMS composite nano-tips was proposed accounting for the superhydrophobic characteristics of the CuO/PDMS nanostructured surface: During wet oxidation, as CuO nanowires form and grow, the PDMS surface in contact with Cu is dragged up along the CuO nano-tips surface, eventually becoming a CuO/PDMS nanocomposite superhydrophobic surface. The fabricated CuO/PDMS nano-tips surface showed superhydrophobicity with a water contact angle of 158°, and optical transmittance of up to 93.8 % in the 400–700 nm wavelength range. Additionally, the mechanical durability of the fabricated surfaces was also investigated. Repeated touching force (∼1.0 kgf), stretching (∼100 %), and bending (∼100°) 1000-cycle test results confirm the mechanical durability of the CuO/PDMS nanostructured surface. As a mechanically durable, transparent, and superhydrophobic film, the CuO/PDMS nanostructured surface was used as protective film for a touch screen. This study offers novel insights into the durability of artificial superhydrophobic surfaces and the synthesis methods of metal oxide-polymer nanocomposites.

Investigation of Antibacterial Efficacy of CuCrO2 Delafossite Thin Films Against E. coli

Terminals used in hospitals, information systems displaying patient information, and smartphones use touch panels that incorporate n and p transparent conducting oxide (TCO) layers [1]. There are a lot of pre-existing research present on n-type TCO while at the same time similar research interest related to p-type TCOs has been lacking. This is due to the inherently high electrical resistivity or low optical transparency of p-type TCOs. Recently, there has been a spike in research related to p-type delafossite thin films, owing to their excellent electrical and optical properties as compared to the other p-type counterparts. Cu-based p-type delafossite materials exhibit low resistivity and at the same time good optical transparency in the visible region. Among the Cu-based delafossites, copper chromium oxide (CuCrO2) exhibits the lowest electrical resistivity reported yet. Use of CuCrO2 as the p-type TCO along with a suitable n-type TCO might demonstrates significant potential to be used for optoelectronic applications.In this work, CuCrO2 thin films have been deposited on quartz substrates using dual target RF magnetron sputtering technique. This involved dual sputtering of 3- inch Cu2O and Cr2O3 targets. The substrate temperature was maintained at 400 °C during the deposition with Ar used as the sputtering gas. This was followed by post deposition annealing. Previous research carried out by our group has indicated that single-phase CuCrO2 was obtained at an annealing temperature of 650 °C in N2 ambiance for 4 hours [2, 3]. Successful synthesis of single-phase CuCrO2 has been confirmed using XPS and XRD study. The resistivity of CuCrO2 was obtained as 0.652 Ω-cm, which is the lowest reported so far. The optical study denoted an average optical transmission of > 60% in the visible wavelength spectrum and a high optical bandgap of 3.2 eV. The antibacterial efficacy of different thickness of CuCrO2 thin films was tested against E. coli bacterial strain and compared against the efficacy of plain quartz in this research work. Results showed that with an increase in the thickness of CuCrO2 thin films, the efficacy against E. coli increases. The highest antibacterial efficacy of 78.07 % was shown by 2000 A° CuCrO2 thin film.[1] Chiu T-W, Yang Y-C, Yeh A-C, Wang Y-P, Feng Y-W. Antibacterial property of CuCrO2 thin films prepared by RF magnetron sputtering deposition. Vacuum. 2013;87:174-177.[2] Sundaresh S, Bharath AH, Sundaram KB. Effect of Annealing Temperature on Radio Frequency Sputtered p-Type Delafossite Copper Chromium Oxide (CuCrO2) Thin Films and Investigation of Diode Characteristics Forming Transparent pn-Heterojunction. Coatings2023.[3] Sundaresh S, Bharath AH, Sundaram KB. Effect of Cu2O Sputtering Power Variation on the Characteristics of Radio Frequency Sputtered p-Type Delafossite CuCrO2 Thin Films. Coatings2023.