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Blog – Page 20

At Texas A&M University, one research lab is changing the game of droplet microfluidics, a technique that involves conducting experiments in nanoscale droplets of liquid in a controlled environment. The team has developed a system that makes droplet microfluidics faster, lower cost, and more accurate.

Dr. Arum Han, the Texas Instruments Professor in the Department of Electrical and Computer Engineering, and his lab associates created a technology named NOVAsort (Next-generation Opto-Volume-based Accurate droplet sorter), a system that allows high throughput screening of molecules and cells at significantly reduced error rates.

Whereas previous research has focused on increasing the speed of assays (a type of laboratory test), the team’s findings, which are published in Nature Communications, are among the first to significantly improve accuracy without compromising the speed of assays.

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A research team from Japan has developed a unified model to scale the transitional pressure development in a one-dimensional flow. This achievement provides a better understanding of how pressure fields build up in the confined fluid system for various acceleration situations, which might be applicable to biomechanics-related impact problems, such as human brain injuries caused by physical contact.

Liquid is usually not considered compressible, except for when subjected to a high-speed flow or rapid acceleration. The latter case is known as the water hammer theory, which often occurs with a loud sound when a water faucet is suddenly closed.

In recent years, the onset of mild traumatic brain injury has been discussed in a similar context, meaning that better understanding of this issue is important in not only traditional engineering but also emerging biomechanics applications.

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An article published in the journal Optica describes the development of a new experimental device that explores the boundary between classical and quantum physics, allowing the simultaneous observation and investigation of phenomena from both worlds.

The instrument was developed in Florence and is the result of collaboration within the extended partnership of the National Quantum Science and Technology Institute (NQSTI), involving the Department of Physics and Astronomy at the University of Florence, the National Institute of Optics of the National Research Council (CNR-INO), as well as the European Laboratory for Nonlinear Spectroscopy (LENS) and the Florence branch of the National Institute for Nuclear Physics (INFN).

It is well known that the study of matter, as we progress to increasingly smaller scales, shows radically different behaviors from those observed at the macroscopic scale: this is where comes into play, helping to understand the properties of matter in the world of the infinitely small. While these phenomena have been studied separately until now, the instrument developed by CNR-INO researchers allows for the experimental exploration of matter’s behavior from both perspectives.

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To store ever more data in electronic devices of the same size, the manufacturing processes for these devices need to be studied in greater detail. By investigating new approaches to making digital memory at the atomic scale, researchers engaged in a public-private partnership are aiming to address the endless demand for denser data storage.

One such effort has focused on developing the ideal manufacturing process for a type of digital memory known as 3D NAND flash memory, which stacks data vertically to increase storage density.

The narrow, deep holes required for this type of memory can be etched twice as fast with the right and other key ingredients, according to a study published in the Journal of Vacuum Science & Technology A.

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It is one of the most important laws of nature that we know: The famous second law of thermodynamics says that the world gets more and more disordered when random chance is at play. Or, to put it more precisely: that entropy must increase in every closed system.

Ordered structures lose their order, regular ice crystals turn into water, porcelain vases are broken up into shards. At first glance, however, quantum physics does not really seem to adhere to this rule: Mathematically speaking, in always remains the same.

A research team at TU Wien has now taken a closer look at this apparent contradiction and has been able to show that it depends on what kind of entropy you look at. If you define the concept of entropy in a way that is compatible with the basic ideas of quantum physics, then there is no longer any contradiction between quantum physics and thermodynamics.

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New research found that individuals with anorexia nervosa have elevated opioid neurotransmitter.

A neurotransmitter is a chemical substance that transmits signals across a synapse from one neuron to another in the nervous system. These chemicals play a crucial role in the functioning of the brain and body, influencing everything from mood, sleep, and learning to heart rate, anxiety, and fear. Common neurotransmitters include dopamine, serotonin, acetylcholine, and norepinephrine. They bind to specific receptors on the surface of neurons, triggering various physiological responses and allowing for the communication that underpins all neural activities. Imbalances in neurotransmitter levels can lead to neurological disorders or mental health issues, making them a central focus of study in both medicine and psychology.

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However, a new study proves that hydrogen bonds can effectively link spin centers, enabling easier assembly of molecular spin qubits. This discovery could transform quantum material development by leveraging supramolecular chemistry.

A Light-Driven Approach to Spin Qubits

Qubits are the fundamental units of information in quantum technology. A key challenge in developing practical quantum applications is determining what materials these qubits should be made of. Molecular spin qubits are particularly promising for molecular spintronics, especially in quantum sensing. In these systems, light can stimulate certain materials, creating a second spin center and triggering a light-induced quartet state.

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A study by cognitive neuroscientists at SISSA investigated how the human brain processes space and time, uncovering that these two types of information are only partially connected.

Imagine a swarm of fireflies flickering in the night. How does the human brain process and integrate information about both their duration and spatial position to form a coherent visual experience? This question was the focus of research by Valeria Centanino, Gianfranco Fortunato, and Domenica Bueti from SISSA’s Cognitive Neuroscience group, published in Nature Communications

<em> Nature Communications </em> is an open-access, peer-reviewed journal that publishes high-quality research from all areas of the natural sciences, including physics, chemistry, Earth sciences, and biology. The journal is part of the Nature Publishing Group and was launched in 2010. “Nature Communications” aims to facilitate the rapid dissemination of important research findings and to foster multidisciplinary collaboration and communication among scientists.

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