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Archive for the ‘biotech/medical’ category: Page 137

Apr 30, 2024

Scientists construct sophisticated synthetic system using self-replicating nanostructures

Posted by in categories: biotech/medical, nanotechnology

A research team led by the late Professor Liang Haojun from the Hefei National Laboratory for Physical Sciences at the Microscale of University of Science and Technology of China (USTC) has developed a facile enthalpy-mediated strategy to precisely control the replication and catalytic assembly of DNA-functionalized colloids in a time-dependent manner, facilitating the creation of large-scale ordered nanomaterials. The study was published in Angewandte Chemie International Edition.

The replication of information is a fundamental characteristic of nature, with playing a crucial role in . However, creating synthetic systems that can produce large-scale, three-dimensionally ordered nanomaterials using self-replicating nanostructures has remained a formidable challenge.

Existing artificial self-replicating systems often fall short in programmable assembly into sophisticated nanostructures, limiting their potential functions and applications.

Apr 29, 2024

Researcher wants to use epigenetics to advance cancer treatment

Posted by in categories: biotech/medical, genetics

Angela Ting, Ph.D., was intrigued by the field of epigenetics as soon as she was introduced to it in college. Now, she runs a research lab that explores how epigenetics plays a role in the development of cancer. She wants to use that knowledge to better treat patients with certain types of cancer.

Apr 29, 2024

New tech enables deep tissue imaging during surgery

Posted by in categories: biotech/medical, food

Hyperspectral imaging (HSI) is a state-of-the-art technique that captures and processes information across a given electromagnetic spectrum. Unlike traditional imaging techniques that capture light intensity at specific wavelengths, HSI collects a full spectrum at each pixel in an image. This rich spectral data enables the distinction between different materials and substances based on their unique spectral signatures.

Near-infrared hyperspectral imaging (NIR-HSI) has attracted significant attention in the food and industrial fields as a non-destructive technique for analyzing the composition of objects. A notable aspect of NIR-HSI is over-thousand-nanometer (OTN) spectroscopy, which can be used for the identification of organic substances, their concentration estimation, and 2D map creation. Additionally, NIR-HSI can be used to acquire information deep into the body, making it useful for the visualization of lesions hidden in normal tissues.

Various types of HSI devices have been developed to suit different imaging targets and situations, such as for imaging under a microscope or portable imaging and imaging in confined spaces. However, for OTN wavelengths, ordinary visible cameras lose sensitivity and only a few commercially available lenses exist that can correct chromatic aberration. Moreover, it is necessary to construct cameras, , and illumination systems for portable NRI-HSI devices, but no device that can acquire NIR-HSI with a rigid scope, crucial for portability, has been reported yet.

Apr 29, 2024

Tiny Robotic Nerve Cuffs Promise Breakthrough in Neurocare

Posted by in categories: biotech/medical, cyborgs, robotics/AI

Source: University of Cambridge.

Researchers have developed tiny, flexible devices that can wrap around individual nerve fibers without damaging them.

The researchers, from the University of Cambridge, combined flexible electronics and soft robotics techniques to develop the devices, which could be used for the diagnosis and treatment of a range of disorders, including epilepsy and chronic pain, or the control of prosthetic limbs.

Apr 29, 2024

Scientists learn from caterpillars how to create self-assembling capsules for drug delivery

Posted by in categories: biotech/medical, nanotechnology

Self-assembling molecules that spontaneously organize themselves to form complex structures are common in nature. For example, the tough outer layer of insects, called the cuticle, is rich in proteins that can self-assemble.

Self-assembly is a cost-effective, environmentally sustainable and quick way of manufacturing nanostructures with critical applications in various industries, ranging from therapeutics to self-replicating machines.

Harnessing the self-assembling abilities of proteins from the cuticles of Asian corn borer moth caterpillars (Ostrinia furnacalis), Nanyang Technological University, Singapore (NTU Singapore) scientists have created nanosized capsules that could be used to deliver drugs and messenger RNA (mRNA). mRNA is a molecule that instructs cells to produce proteins and has been used in COVID-19 vaccines.

Apr 29, 2024

The Novel Material Revolutionizing Energy Storage

Posted by in categories: biotech/medical, computing, mobile phones

Washington University in St. Louis scientists have developed a novel material that supercharges innovation in electrostatic energy storage. The material is built from artificial heterostructures made of freestanding 2D and 3D membranes that have an energy density up to 19 times higher than commercially available capacitors.

Electrostatic capacitors play a crucial role in modern electronics. They enable ultrafast charging and discharging, providing energy storage and power for devices ranging from smartphones, laptops, and routers to medical devices, automotive electronics and industrial equipment. However, the ferroelectric materials used in capacitors have significant energy loss due to their material properties, making it difficult to provide high energy storage capability.

Apr 29, 2024

A longevity researcher is facing backlash for claiming to ‘reverse aging.’ Scientists say there’s no consensus on what it means

Posted by in categories: biotech/medical, life extension

Harvard researcher Dr. David Sinclair has found himself at the center of controversy within the longevity community.

Sinclair has been a poster child of the longevity movement for years. He’s built several biotechnology companies focused on reversing the effects of aging, won acclaim for his research, and cultivated a loyal base of fans who swear by his lifestyle tips.

He’s also earned his share of critics who say his research isn’t always backed up by sufficient evidence. But over the past months, The Wall Street Journal reported that Sinclair has been battling a new level of backlash from colleagues and researchers who say his claims on curing aging have gone too far.

Apr 29, 2024

The World’s Most Genetically Modified Person

Posted by in categories: biotech/medical, genetics

Science is where curiosity, ambition, and innovation meet.

Liz Parrish, founder and CEO of BioViva Science, is spearheading a campaign against the greatest killer on the planet. She stands, unvexed by criticism and convention, in the vanguard of bringing tomorrow’s treatments to those who need them today.

Her journey began when her son was diagnosed with type-1 diabetes.

Apr 29, 2024

Nanoscale anisotropy for biomedical applications

Posted by in categories: biotech/medical, nanotechnology

Using nanoparticles featuring anisotropic characteristics is a promising approach to developing multifunctional platforms for drug delivery and theranostics. This Review discusses methods to generate anisotropy in nanosystems and strategies to control particle transport, targeting and interaction with cells to overcome biological barriers.

Apr 29, 2024

Optical barcodes expand range of high-resolution sensor

Posted by in categories: biotech/medical, chemistry

The same geometric quirk that lets visitors murmur messages around the circular dome of the whispering gallery at St. Paul’s Cathedral in London or across St. Louis Union Station’s whispering arch also enables the construction of high-resolution optical sensors. Whispering-gallery-mode (WGM) resonators have been used for decades to detect chemical signatures, DNA strands and even single molecules.

In the same way that the architecture of a whispering gallery bends and focuses sound waves, WGM microresonators confine and concentrate light in a tiny circular path. This enables WGM resonators to detect and quantify physical and biochemical characteristics, making them ideal for high-resolution sensing applications in fields such as biomedical diagnostics and environmental monitoring.

However, the broad use of WGM resonators has been limited by their narrow dynamic range as well as their limited resolution and accuracy.

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