Mechanical Engineering Society, BIT Sindri, Dhanbad’s Post

How a Laser Can Cast a Shadow and What It Means for Future Technologies ✨ Scientists have recently achieved an astonishing effect: a laser casting a shadow, which was previously considered impossible (https://lnkd.in/g5rmw6wG) . During the experiment, a powerful green laser altered the optical properties of a ruby crystal, increasing its absorption of blue light and forming a visible shadow. This discovery opens the door to numerous applications, including revolutions in microelectronics, medicine, and energy. Lithography and Chip Manufacturing 🖥️ The technology of controllable laser shadows could overcome the diffraction limit, enabling structures smaller than 1 nm. This could simplify the production of 3D transistors and accelerate the adoption of new architectures like Gate-All-Around. The potential economic effect - lower costs and extending Moore's Law. 3D Printing and Nanolithography 🖨️ Laser shadows can create ultra-thin structures with extreme precision. This could enable: printing nanomaterials with unique properties; developing metamaterials for electronics, optics, and medicine; producing complex geometric structures at the micro- and nanoscale. Advanced Biomedical Technologies 🩺 Laser shadows pave the way for precise diagnostics and therapies, such as: localized tissue treatments without damaging surrounding areas; enhanced visualization of biological structures like cells and proteins. These advancements are especially important for laser surgeries, tumor treatments, and molecular diagnostics. Optical Computing and Energy 🔋 Laser shadows could form the foundation of photonic processors, replacing silicon chips. They also have the potential to increase solar panel efficiency by optimizing light absorption. This discovery not only deepens our understanding of light-matter interactions but could also transform numerous industries. 🚀 Controllable laser shadows might become a key technology of the future. 🌌 Join the conversation! How do you see this discovery shaping the future of industries? Share your thoughts in the comments to discuss cutting-edge solutions! #Microelectronics #OpticalTechnologies #Innovation

🎉 Excited to share a milestone in my PhD journey! I’m thrilled to announce the publication of my first research paper in the *Additive Manufacturing* journal! Titled **"4D-Printed Shape Memory Polymers in Focused Ultrasound Fields"**, this work explores how focused ultrasound waves can non-invasively actuate additively manufactured smart materials (shape memory polymers) with precise, localized, and spatiotemporal control. Our findings highlight the immense potential of combining shape recovery dynamics with 3D printing and acoustic actuation, paving the way for next-generation biomedical devices, adaptive smart structures, ultrasound-responsive polymeric materials, and controlled shape morphing. I’m deeply grateful to my advisor, Dr. Shima Shahab, and our collaborator, Dr. David Safranski, for their guidance and support throughout this project. ✨ If you’re interested in 4D printing, acoustics, smart materials, ultrasound-responsive systems, or their applications, let’s connect and discuss! 🔗 Check out the paper here: https://lnkd.in/eD7FUBaK 📌 Learn more about our research at the MInDs Lab: https://lnkd.in/eVRup6mi #4DPrinting #SmartMaterials #FocusedUltrasound #Actuation #Polymers #Acoustics

Auxetic Metamaterials: An Introduction and Applications Auxetic metamaterials are a fascinating class of materials characterized by their unique property of negative Poisson's ratio. Unlike conventional materials that expand laterally when stretched, auxetic materials contract laterally, leading to intriguing mechanical properties. This unique behavior can be attributed to their specific microstructure, which often consists of re-entrant geometries or specific arrangements that allow for this counterintuitive response. ▎Properties of Auxetic Metamaterials: 1. Negative Poisson's Ratio: As mentioned, when stretched, these materials expand in the transverse direction rather than contracting. 2. Enhanced Energy Absorption: Auxetic materials can absorb more energy than conventional materials, making them ideal for applications requiring impact resistance. 3. Improved Fracture Toughness: They often exhibit better resistance to crack propagation. 4. Tailored Mechanical Properties: Their properties can be engineered for specific applications by altering the design of their microstructure. ▎Applications: Auxetic metamaterials have a wide range of applications across various fields: • Biomedical Devices: Used in implants and prosthetics that require flexibility and durability. • Acoustic and Vibration Damping: Useful in applications requiring sound insulation or vibration reduction. • Flexible Electronics: Can be integrated into wearable technology for enhanced performance. The image you see in this post showcases the first auxetic structure produced using FDM 3D printing technology. This innovative approach opens up new possibilities for creating complex geometries that were previously difficult to manufacture. I would like to express my gratitude to Dr. Mohammad Azadi for introducing me to these remarkable structures and to Engineer Salar Rohani Nejad for his invaluable assistance in working with the 3D printer. Your support has been instrumental in my journey into the world of auxetic metamaterials. #AuxeticMetamaterials #3DPrinting #Innovation #MaterialsScience #Engineering

🚀 Pioneering Techniques for Flexible Electronics Exciting developments are on the horizon for flexible electronics! A team of scientists from Yokohama National University has introduced a revolutionary bubble printing method that enables high-precision patterning of liquid metal wiring. This groundbreaking technique could transform the future of wearable sensors and medical implants by offering highly flexible and conductive circuits. 💡 Conventional wiring methods often rely on rigid materials, which aren't suited for flexible electronics that need to bend and stretch. Using a femtosecond laser beam to generate microbubbles, the researchers precisely arranged eutectic gallium-indium alloy (EGaIn) particles, crafting ultrathin wiring on flexible surfaces. This innovation not only maintains high conductivity but also ensures stability even when bent, with wiring as thin as 3.4μm and a conductivity of 1.5 x 10⁵S/m.✨ Professor Shoji Maruo, the leading scientist on this project, envisions integrating this method with various electronic components to create practical, flexible devices for daily use. From wearable sensors to advanced medical devices, the potential applications are vast and promising. This technology truly embodies the future of electronics where flexibility meets functionality. 🌐 #FlexibleElectronics #WearableTech #InnovationInScience

Hi folks 👋 Advancements in 3D Bioprinting: Revolutionizing Tissue and Organ Regeneration In recent years, the field of regenerative medicine has witnessed remarkable progress, largely fueled by the advent of 3D bioprinting technology. This cutting-edge innovation holds the promise of revolutionizing healthcare by enabling the precise fabrication of tissues and organs for transplantation and research purposes. 3D bioprinting involves the layer-by-layer deposition of living cells, biomaterials, and growth factors to create complex three-dimensional structures that mimic native tissues and organs. This process relies on computer-aided design (CAD) software to generate digital models, which are then translated into physical structures using specialized bioprinters. Various printing techniques, including extrusion-based, inkjet-based, and laser-based methods, are employed to precisely position bioink materials in a spatially controlled manner. Stay tuned for more insights into the principles, applications, and future prospects of 3D bioprinting. Exciting discoveries lie ahead in the realm of regenerative medicine! 🌱💡 #Bioprinting #HealthcareInnovation #RegenerativeMedicine #snsinstitution #snsdesignthikers #designthinking

🦁🦅🦎 It’s hard for a machine to truly capture the efficiency of bird or beast, or the natural advantages that animals possess in locomotion, flexibility, and control.  Now, AIBN researchers have found a way to mimic complex biomechanical qualities in robotics for our own benefit, using only a 3D printer. 🧪 Inspired by shape-transformable liquid metal nanoparticles, Dr Ruirui Qiao and her nanobiotechnology research team have developed a functional material toolkit capable of producing shape-shifting soft-rigid robots with musculoskeletal qualities. By integrating ‘soft’ spherical liquid metal nanoparticles and ‘rigid’ rod-like gallium-based nanorods into 3D printing technology, Dr Qiao says the devices and components produced by her team possess superior flexibility and strength for high-precision grippers and bioinspired motors.  Dr Qiao says these traits will be crucial to the next generation of rehabilitation medical devices. 📖 The research in Advanced Materials is out now. Read about it here: https://lnkd.in/gub2FCZQ Also contributing to this project were AIBN researchers XUMIN HUANG, Jiangyu Hang, Naufal Kabir A., Thomas Quinn, Dr Liwen Zhang, Professor Tom Davis, as well as Assistant Professor Yiliang Lin of the National University of Singapore, and Chenyang Hu, Xuan Pang, and Xuesi Chen of the Chinese Academy of Sciences.  The ANFF Queensland and the Centre for Microscopy and Microanalysis (CMM) - both of which are situated at the AIBN - were also involved.  

Current Research, Trends, and Prospects in Laser-Assisted Additive Printing Technology The aim of this Special Issue is to cover relevant experimental and theoretical aspects from new technologies in this field to their applications, via the following topics: * Laser-assisted additive printing technologies; * Bio-printing for tissue engineering, scaffolding, and surface structuring for bioapplications; * Additive fabrication of biosensors, synthetic biostructures, implants, and biodevices; * Additive microfabrication in microelectronics, optoelectronics, flexible electronics, and organic electronics; * Additive fabrication in electrical engineering (including radiofrequency and microwave engineering, photovoltaic cells and batteries, electrochemistry, etc.); * Micro-/nano-additive structuring via nanophotonics for metallic, ceramic, and glass materials; * Theoretical aspects of laser-assisted additive printing technologies: modeling/simulation research. Original research and review manuscripts on challenges and trends covering fundamental and experimental research on laser-assisted additive printing technologies and applications are welcome. Special attention is paid to environmental protection technologies, ecology and ecological applications, as well as ecological sciences, to address current environmental problems. Further details, here: https://lnkd.in/eznP7b6z

🎵 🌊 Researchers unveil new method for studying sound wave propagation in topological metamaterials Researchers from IMDEA Materials and IMDEA Nanociencia, in collaboration with the Instituto de Ciencia de Materiales de Madrid (ICMM - CSIC) and Nanjing University, have taken a novel approach to studying the interaction between certain topological #metamaterials and sound wave propagation. 👨🔬 The technique, described by IMDEA Materials’ Dr. Johan Christensen as “cut-and-glue”, was one of the methods employed in the recent publication ‘Visualizing the topological pentagon states of a giant C540 metamaterial’ in the latest edition of the prestigious Nature Portfolio Communications journal. The study focuses on Buckminsterfullerene, or “#buckyballs,” and uses 3D printing to scale up the molecular structure of a C540 fullerene, which typically has an approximate diameter of around 1.1 nanometre (nm). To put that size into perspective, it is roughly 70,000 times smaller than the width of a human hair! ⬇️ Read more about this fascinating dive into the world of metamaterials at our website following the link ⬇️ And you can find the original publication, here: https://lnkd.in/dJ8utP6d

👨🔬Researchers from the National Institute of Nuclear Physics, and the National Research Council Institute of Nanotechnology in Italy have conducted preliminary experiments using the CreatBot PEEK-300 high-temperature 3D printer🎉. Their study, titled "The Impact of Direct Annealing on the Performance of Additively Manufactured PEEK," has been published in the CIRP Journal 📖. This study aims to provide further insights into how annealing affects the flexural performance of PEEK specimens manufactured through the FFF process, comparing the effects of direct annealing during the 3D printing process with traditional oven annealing. The #CreatBot #PEEK-300 3D printer maximum temperatures for the nozzle, platform, and chamber are 500°C, 200°C, and 120°C, respectively ⚡.A key feature of this printer is its Direct Annealing System (DAS), which allows for immediate annealing of freshly printed parts during the deposition process. The study also analyzes the effectiveness of the direct annealing process provided by the PEEK-300, comparing it with traditional oven annealing in terms of time and cost. The conclusion underscores the necessity of choosing immediate annealing technology. This year, CreatBot Technology will apply its patented high-temperature thermal radiation technology, already approved, to the next generation of PEEK high-temperature polymer series 3D printers 🚀🚀. Enhancing the efficiency of immediate annealing by more than fivefold. Please follow us for more updates 🤝. #CreatBot #PEEK300 #PEEK #3DPrinter