Sudhakara Allam’s Post

Annealing Methods are Key to Unlocking Nanocrystalline Core Performance New research by Taylan Günes highlights the impact of annealing methods on nanocrystalline core performance. Choosing the right cooling gas, temperature profile and dwell time can significantly enhance magnetic properties! At Magnetec Group, we leverage this knowledge to manufacture high-quality cores optimized for diverse applications. Our expertise in annealing processes and precise process control ensures consistent and reliable performance. ➡️Learn more about how we can help you harness the full potential of nanocrystalline technology: Magnetec Group #powerelectronics #emc #EMI #nanocrystalline

🗞 Electronic News! 🗞 Magnetite, the oldest and strongest natural magnet, has captivated scientists and researchers for centuries with its unique properties and diverse applications. Beyond its traditional use in electronics, this remarkable mineral has emerged as a key player in the field of spintronics, where devices operate based on the spin of electrons rather than conventional electrical current. The study of magnetite's magnetic and electronic properties has not only revolutionized various scientific disciplines but has also attracted the attention of renowned figures like Einstein, who recognized its significance in understanding magnetism. In addition to its pivotal role in the realm of spintronics, magnetite has been instrumental in advancing our knowledge of biomagnetism, catalysis, and paleomagnetism. Its versatility and adaptability have led to groundbreaking discoveries in these fields, paving the way for innovative technologies and applications. Researchers have long been intrigued by the potential of magnetite to revolutionize various industries and drive scientific progress. #electricalengineering #electronics #embedded #embeddedsystems #electrical #computerchips Follow us on LinkedIn to get daily news: HardwareBee - Electronic News and Vendor Directory

Unlocking Graphene’s Potential: Oxygen-Free Methods Revolutionize Production Columbia Engineers link oxygen to graphene quality and develop new techniques to reproducibly manufacture the wonder material at scale. Graphene has been called “the wonder material of the 21st century.” Since its discovery in 2004, the material—a single layer of carbon atoms—has been touted for its host of unique properties, which include ultra-high electrical conductivity and remarkable tensile strength. It has the potential to transform electronics, energy storage, sensors, biomedical devices, and more. But graphene has had a dirty little secret: it’s dirty. Breakthrough in Graphene Synthesis Now, engineers at Columbia University and colleagues at the University of Montreal and the National Institute of Standards and Technology (NIST) are poised to clean things up with an oxygen-free chemical vapor deposition (OF-CVD) method that can create high-quality graphene samples at scale. Their work, published on May 29 in Nature, directly demonstrates how trace oxygen affects the growth rate of graphene and identifies the link between oxygen and graphene quality for the first time. “We show that eliminating virtually all oxygen from the growth process is the key to achieving reproducible, high-quality CVD graphene synthesis,” said senior author James Hone, Wang Fong-Jen Professor of Mechanical Engineering at Columbia Engineering. “This is a milestone towards large-scale production of graphene.” #inovation #researchanddevelop #graphen

New charging algorithm can double the life of Li-ion batteries… A team of researchers from Helmholtz-Zentrum Berlin (HZB) and Humboldt University in Berlin developed an alternative charging method to make li-ion batteries last much longer. By changing how the charger delivers current to electrolyte materials, batteries become more resilient and retain a higher energy capacity after hundreds of recharge cycles. Although ubiquitous in devices, their capacity gradually degrades as electrolytes pass through the membrane that separates the anode and cathode. The best commercial-grade lithium-ion #batteries use electrodes made of a compound NMC532 and graphite, which lasts for up to 8 years. Conventional charging uses a constant current (CC) of external electric energy. The study showed that when using the CC charging, the anode's solid electrolyte interface (SEI) was significantly thicker, with more cracks in the NMC532 and graphite electrode structures. A thicker SEI and more cracks in the electrodes mean a significant loss of capacity for the li-ion batteries. The researchers switched to pulsed current (PC) charging and discovered that the SEI interface was much thinner, and the electrode materials underwent fewer structural changes. Using Europe's leading synchrotron facilities for particle acceleration to conduct the PC  recharging experiments, they found that PC charging promotes the "homogeneous distribution" of lithium ions in the graphite. This reduces mechanical stress and cracking in the graphite particles, and also suppresses structural degradation in the NMC532 cathode. High-frequency pulsing with square-wave current produced the best results. The tests show that PC charging can double the service life of commercial li-ion batteries with an 80% capacity retention. Simply switching to pulsed charging could have many advantages for the stability of the electrode materials and the interfaces and significantly extend the service life of batteries... Daily #electronics from Asia insights – follow me, Keesjan, and never miss a post by ringing my 🔔. #technology #innovation

Journal Article 37 📚 Excited to share our recent publication in Springer Fibers and Polymers! Our study developed highly flexible non-woven fabric from electrospun PVDF nanofibers containing cationic and anionic surfactants. This research advances the understanding of PVDF nanofabrics and sets the stage for future exploration in flexible electronics. This work was part of my PhD research under the guidance of Prof. S. Anandhan. #Research #Electronics #PVDF #Nanofabrics #Dielectrics #Piezoelectric #Sensors #EnergyStorage #PhD

Introduction to the Kelvin Probe and How It Works The Kelvin Probe is a powerful and versatile tool used in surface science to measure the work function and surface potential of materials with high precision. Named after Lord Kelvin, this non-contact, non-destructive technique is essential for researchers and industries focused on material characterisation, semiconductor research, photovoltaics, and corrosion studies. How the Kelvin Probe Works: 1. Basic Principle The Kelvin Probe measures the contact potential difference (CPD) between a reference electrode (typically a vibrating metallic tip) and the sample surface. This CPD is directly related to the work function or fermi level difference between the two materials. 2. Work Function The work function is the minimum energy required to remove an electron from the surface of a material to a point just outside the material. It's a crucial parameter in understanding electronic properties and surface chemistry. 3. Measurement Process ⏺ Vibrating Tip: The reference electrode is mechanically vibrated close to the sample surface. This vibration causes an alternating current to flow between the electrode and the sample due to the changing capacitance. ⏺ Peak-to-Peak Curve: The peak-to-peak of the alternating current is measured and is used to calculate the work function difference between the tip and the sample. ⏺ Mapping Surface Potential: By scanning the tip across the sample surface, a map of the surface potential or work function variations can be created, providing detailed insights into the material's electronic properties. 4. Example Applications ⏺ Photovoltaics: Investigating surface properties of solar cell materials. ⏺ Semiconductor Research: Understanding work function variations across semiconductor surfaces. ⏺ Corrosion Studies: Analysing surface potential changes in materials exposed to corrosive environments. ⏺ Thin Films and Coatings: Characterising electronic properties of thin films and coatings. Advantages of the Kelvin Probe ⏺ Non-Contact and Non-Destructive: Does not damage the sample, making it suitable for delicate materials. ⏺ High Sensitivity and Resolution: Capable of detecting minute changes in surface potential with high spatial resolution. ⏺ Versatile: Can be used in various environments, including ambient, controlled atmosphere, and vacuum conditions. The Kelvin Probe is an indispensable tool in modern surface science, providing critical insights into the electronic properties and behaviours of materials. By understanding and utilising the Kelvin Probe, researchers can drive innovations in technology and materials development. Find out more at https://lnkd.in/eUruEDyv

"Twistronics" — the slight twisting of 2D materials, which alters their electrical properties—is revolutionizing quantum materials research. Ritesh Agarwal, Srinivasa Ramanujan Distinguished Scholar in the Department of Materials Science and Engineering (MSE), is exploring how controlling these twisted materials can open new pathways for next-gen electronic devices and energy-efficient technologies. “What we discovered is that by simply twisting the material, we could control how electrons move,” explains Agarwal. Twisting layers of spirally stacked tungsten disulfide (WS₂) crystals change their electrical properties, creating new possibilities for device performance and energy efficiency. Read the full story. https://bit.ly/3BvHuuV Penn Materials Science and Engineering

Just read: A comprehensive investigation into the structural, magnetic, and dielectric properties of Ba1−xCoxFe12O19 ferrites sheds light on their potential applications in various industries. This study, conducted using the heat treatment method at 1100°C, reveals intriguing insights. XRD analysis confirms the formation of M-type hexaferrites alongside a BaFe2O4 phase, providing crucial crystallographic details. Moreover, VSM measurements demonstrate the tunability of magnetic properties with cobalt substitutions, while dielectric measurements uncover frequency-dependent conductivity behaviors. These findings not only deepen our understanding of these materials but also hint at their potential in automotive, sensors, and biomedical applications. Read the full article for insights into the future of materials science: https://lnkd.in/dzUeiCJQ #MaterialsScience #Research

https://lnkd.in/ePKdvKPg Breakthrough in Advanced Materials: Hybrid Improper Ferroelectricity. Researchers have unlocked new potential in cutting-edge electronics by studying a special superlattice made from SrZrO₃ (Strontium Zirconate) and BaZrO₃ (Barium Zirconate). But what makes this discovery so exciting? Here’s the simple version: Ferroelectric materials can store electric charges like tiny batteries. Normally, some materials can’t do this due to quantum effects, but by layering these two materials, scientists created a hybrid improper ferroelectricity! What’s the secret? Atomic twists: The oxygen atoms rotate in cool patterns like gears turning. Strain effects: By squeezing the layers, they force the material to change its behavior. Together, these effects create a stronger electric polarization, meaning better performance for advanced electronics. This could lead to innovations in: Faster memory chips More efficient sensors Smarter electronic devices The future of technology is being built one atom at a time. #MaterialsScience #Innovation #Ferroelectricity #Superlattice #QuantumPhysics #Research #Electronics #ScienceInnovation #FutureTech #LinkedInScience #Breakthroughs #AdvancedMaterials