A Scientific Research Vault
One of the biggest challenges that still haunts tissue engineering and regenerative medicine is, how to mimic the properties of articular cartilage in synthetic materials. Articular cartilage possesses a unique combination of stiffness and toughness. These features allow the connective tissues to withstand the mechanical stresses and strains experienced during joint movement.
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Semiconductor manufacturing is experiencing rapid and dynamic growth. The exponential evolution is making it one of the most swiftly evolving industries globally. As technology is advancing, the electronic devices are progressively shrinking in size. Behind this constant innovation lies the incredible field of “computational lithography”. It is the heart of semiconductor industry. After all, it blends the power of computers, mathematics, and precision engineering. Only to create intricate microscale structures on silicon wafers.
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At the fundamental level, function of human cell is to convert nutrients into energy and useful products that sustain life. In the process, these cells give out certain waste products that otherwise cause harm to the inner environment. For instance, reactive oxygen species (ROS) molecule is one of the natural byproducts of cellular metabolism. ROS are highly reactive molecules that contain oxygen atoms with unpaired electrons.
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Dr. Kai Wang is PhD, Principal Investigator, and Assistant Research Professor at the Department of Materials Science and Engineering, Penn State. His recent work on intelligent and efficient panchromatic imaging for artificial retina biotechnology, caught our attention and so we tried to touch base with him for an interview. We got lucky, as he agreed to spend some time with us. Dr. Wang, here, talks about his quest to understand the mechanisms of cognition within the neural topological structures of the brain. And how these natural intelligences can be influenced…
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Conventional methods in synthetic biology for cell-based therapies focus on using specific proteins to achieve a desired effect in cells. For instance, cancer treatment involves certain proteins to kill cancer cells. while, some proteins are used to help tissues regenerate after an injury. This process, however, is lengthy as it takes time for the proteins to be produced and break down. Additionally, it requires a lot of energy from the cells.
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Lately, there has been growing interest in creating brain-inspired hardware for enhancing efficiency of AI models. Conventional hardware architectures are specialized in three specific tasks, which are: Researches across the globe, however, are exploring the possibility of combining these functionalities into a single device. They aim to mimic the parallel and distributed nature of the human brain.
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Inspired by the natural design of our retinas, scientists at Penn State have created a sensor array using narrowband perovskite photodetectors to replicate the function of our cone cells. Cone cells in our eyes are responsible for color vision. And they are sensitive to red, green, and blue light wavelengths.
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Electrical charges have a vital role in majority of biological processes in the human body. In fact, the human body is an incredibly complex electrical system that relies on the flow of electrical charges to carry out its functions. Electrical signals, for instance, are not only used by the brain and nerves to communicate with each other. But the same signals also allow us to move our muscles, feel sensations, and think. At the cellular level, ions such as sodium, potassium, and calcium work in tandem to regulate various processes…
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Certain materials like crystals, ceramics, and at times even biological matter (bone, DNA, and proteins), can generate an electrical charge. The effect is seen when the material is put under the influence of some mechanical stress – such as pressure or vibration – this phenomenon is termed as piezoelectricity. The charge is accumulated on the surface of the material. From there, it can be used for various applications.
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Cancer treatments such as radiotherapy and chemotherapy have been shown to be less effective when exposed to a hypoxic environment. In fact, low oxygen levels in tumors can also escalate disease progression. Hyperbaric oxygen therapy and microbubble infusion are the two techniques through which oxygen levels in tumors can be increased to improve treatment outcomes.
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An international team of neuroscientists has demonstrated that human brain organoids when implanted in the cerebral cortex region of a mice can respond to external sensory stimuli. Brain organoid, here, refers to a three-dimensional tissue that is made from skin cells.
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Haptic systems are mainly designed to control virtual objects. Their efficacy is good, but when it comes to controllers, joysticks, and steering wheels, things look slightly bulky. And tangled wires is another task to deal with. Researchers at City University of Hong Kong have come up with a portable solution to enhance the tactile VR experience.
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In an effort to create faster and more energy-efficient soft robots, researchers at North Carolina State University have created a prototype of swimming soft robots based on manta rays. The team got inspired from the biomechanics of the marine animal. Rate of swimming for most of the (swimming) soft robot is one body length per second, manta rays, however, glide at much faster rate. Their swimming efficiency triggered the scientists to look into the potentiality of creating a similar robot, biomechanically.
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Dr. Philipp Simons recently hit headlines with his new paper on miniature glucose fuel cells for implantable devices. According to him, human body is saturated with glucose hence, harvesting this energy to power implantable devices is an achievable feat. Dr. Jennifer L.M. Rupp from Technical University Munich in Germany, also Dr. Simons’ thesis supervisor, postulated that battery takes up 90% of an implant’s volume. Interestingly, the new fuel cell will mask the implant and power it with no volumetric footprint. Their innovative approach to solve medical problem gave me an…
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Toothbrush, or the heads per say, have not much evolved since ages, from rectangular they have only graduated to diamond shaped geometry. I really doubt how far does the new shape has been able to reach the teeth in the back. In the dental hygiene sequence floss, brush and rinse go hand in hand. And each step is an important and at times, cumbersome task especially for people with disabilities. Researchers at the University of Pennsylvania have put in an effort to combine these three steps in one with the…
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