Scientists at Queen Mary University of London have developed an artificial muscle that can change from soft to hard in response to a voltage change. The technology aims to mimic human muscles in both its movements and in its ability to sense forces and deformation. The muscle is made using carbon nanotubes that have been […]
Tag: Materials
Wireless Patch Monitors, Paces Heart and then Biodegrades
Researchers at Northwestern University have developed a cardiac monitoring device that is intended for use in patients who have suffered a cardiac event. The soft and flexible patch can be affixed to the outside of the heart during a routine procedure, but does not require a second procedure to remove the device later, as it […]
Implantable Sponge for Hemorrhage Monitoring and Control
Researchers at the Terasaki Institute for Biomedical Innovation in California have developed an implantable sponge that can monitor for signs of a hemorrhage, and then help to control bleeding once it has occurred. The researchers used silk fibroin, a protein produced by the Bombyx mori silkworm, to create the sponge, and took advantage of its […]
Microneedle Patch for Antibiotic-Free Acne Treatment
Researchers at the University of Hong Kong have developed a microneedle patch for the drug-free treatment of skin infections, such as acne. Acne is often treated using antibiotics, but these have limited effectiveness over the long term and can result in drug-resistant bacteria. In an effort to develop a drug-free alternative, these researchers hav (Read more...)
Smart Pants Track Physical Activity
Engineers at the Federal University of Espirito Santo in Brazil have developed smart pants that can non-intrusively track physical movements and provide updates to caregivers if the people they’re taking care of are showing signs of distress. This application could be very useful for people who are monitoring elderly patients in healthcare faciliti (Read more...)
Soft Coating Cools Wearable Devices
Scientists at the City University of Hong Kong have developed a coating for wearable technologies that can help to dissipate heat, reducing the chances of skin burns and increasing the life of such devices. Electronic devices can generate heat, but this can be problematic for wearables that are in constant contact with the skin. The […]
Nanomagnet Patch Measures Muscle Movements
Researchers at UCLA have developed a wearable patch that can measure muscle movements in underlying tissues. The patch contains nanomagnets, and movements in underlying muscles can deform the resulting magnetic fields, creating an electric current. This both provides a readable signal for the system, and also means that the system is self-powered a (Read more...)
Stiff and Tough Hydrogel for Cartilage Repair
Researchers at the University of British Columbia have developed a protein-based hydrogel that is highly adapted for articular cartilage repair. A major challenge in creating biomaterial therapies to repair damaged articular cartilage is matching the mechanical properties of this highly specialized tissue. Cartilage is very tough, resisting breakin (Read more...)
Heart Valves Made in Minutes
Researchers at Harvard University have developed a technique that lets them create biomaterial heart valves in a matter of minutes. The approach, called ‘Focused Rotary Jet Spinning’, has been described by the researchers as ‘a cotton-candy machine with a hair dryer behind it.’ Essentially, the technique involves using jets (Read more...)
Conductive Polymer Electrode is Metal-Free
Researchers at MIT have developed a metal-free electrode using conductive polymers. The electrode is flexible and strong enough for long-term implantation in the body. The device is intended as an advanced replacement for rigid metal electrodes that can cause tissue damage and scarring over the long term, leading to device failure. The new technolo (Read more...)
Tiny Cylinders for Controlled Drug Release
Researchers at Rice University have developed a new type of microparticle for drug delivery, made from a polymer called PLGA that has already been extensively explored as a component in drug delivery systems. However, what makes these new particles different is the method of loading and sealing them, which appears to give them highly tunable [&hell (Read more...)
Gelatin-Based Surgical Sealant for Rapid Sealing Inside the Body
Researchers at the Terasaki Institute for Biomedical Innovation in Los Angeles have developed a gelatin-based surgical sealant. The sealant is thermoresponsive, meaning that it will rapidly form a semi-solid bolus when it reaches body temperature. It is also bioadhesive, adhering to slippery, wet surfaces in the body with relative ease. The researc (Read more...)
Smart Bandage Monitors and Treats Chronic Wounds
Researchers at the California Institute of Technology have developed a smart bandage for chronic wounds, such as those sometimes experienced by patients with diabetes. The bandage is flexible and stretchy, but contains electronic components that can monitor the wound for signs of infection, including abnormal temperature, increased uric acid levels (Read more...)
Biomimetic Construct Models Burn Injuries
Researchers at Harvard University have developed a model of burn injuries that will allow them to investigate the mechanisms underlying healing in such injuries and test out new approaches to enhance this process. Burns can take a long time to heal and can be prone to infection and complicated by the presence of large quantities […]
Moving Cells Using Ultrasound
Researchers at Caltech have developed a technique that lets them move groups of cells very precisely. It involves genetically modifying cells so that they express small protein air sacs in their interior. The sacs render the cells highly susceptible to manipulation using ultrasound waves, and the researchers can precisely move them into complicated (Read more...)
Printing Bacteria to Make Bone-Like Structures
Researchers at Ecole Polytechnique Fédérale de Lausanne (EPFL) in Switzerland have developed a method to 3D print mineralized constructs with a little helping hand from bacteria. The technique consists of printing a polymer bioink that contains bacteria that will produce calcium carbonate when exposed to a urea solution. The two-step (Read more...)
Scientists Grow Electrodes Inside The Body
Researchers at Linköping University in Sweden have developed a method whereby the body can ‘grow its own’ electrodes. The minimally invasive technique involves injecting a hydrogel that is laden with enzymes into target tissues. The enzymes interact with molecules that are present in the tissue to change the structure of the gel an (Read more...)
Bacteria Create Protein Nanowires for Biosensing
Scientists at the University of Massachusetts Amherst have developed a biosensor that is based on protein nanowires that are created by bacteria. The protein nanowires are highly sensitive to ammonia, in this case, which is present in the breath of patients with kidney disease, but it is likely possible to create nanowires for a huge […]
Electrostatic Face Mask Self-Charges with Breathing
Researchers at City University of Hong Kong have developed an electrostatically charged face mask that can replenish its charge through the wearer’s breathing action. The electrostatic charge helps the mask to adsorb tiny particles, such as SARS-CoV-2 viruses. However, such masks typically lose their charge and ability to bind particles over (Read more...)
Self-Assembling Peptides as a Bioink
Researchers at Rice University have developed a bioprinting method that uses self-assembling peptides as a bioink. The technique involves using “multidomain peptides” that are hydrophobic at one end and hydrophilic at the other. When the peptides encounter water, they flip over each other to create hydrophobic sandwich structures that s (Read more...)