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Image: Nanoparticles releasing microRNAs (light blue) inside a human brain cancer cell; Copyright: Yuan Rui, John Hopkins

Nano-size packets of genetic code to treat brain cancer

17/07/2018

In a study, scientists at Johns Hopkins Medicine say they have successfully delivered nano-size packets of genetic code called microRNAs to treat human brain tumors implanted in mice. The contents of the super-small containers were designed to target cancer stem cells, a kind of cellular "seed" that produces countless progeny and is a relentless barrier to ridding the brain of malignant cells.
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Image: person in protective clothing holding the sensor in his hand; Copyright: RMIT University

New detection sensor for type 1 diabetes

13/07/2018

Researchers are developing early detection technology for Type 1 diabetes that can accurately predict if a child is at risk of the chronic disease.
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Image: Illustration of graphene-based SNP detection chip wirelessly transmitting signal to a smartphone; Copyright: Lal et al.

Biosensor chip detects genetic mutation

12/07/2018

A team led by the University of California San Diego has developed a chip that can detect a type of genetic mutation known as a single nucleotide polymorphism (SNP) and send the results in real time to a smartphone, computer, or other electronic device. The chip is at least 1,000 times more sensitive at detecting an SNP than current technology.
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Image: 3D image of a wrist with a watch showing part of the finger bones in white and soft tissue in red; Copyright: MARS Bioimaging Ltd

First 3D X-ray of a human in colour

11/07/2018

What if, instead of a black and white X-ray picture, a doctor of a cancer patient had access to colour images identifying the tissues being scanned? This colour X-ray imaging technique could produce clearer and more accurate pictures and help doctors give their patients more accurate diagnoses.
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Image: close-up of the binary code; Copyright: panthermedia.net/JCB Prod

A molecular label: traceability for medical implants

10/07/2018

A team of researchers at CNRS, Aix-Marseille Université and Université Paris 13 has demonstrated effective molecular labelling to unequivocally identify biomedical implants, even after a prolonged period inside the living being. These results were published in Angewandte Chemie International Edition on July 5, 2018.
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Image: man touching a prosthetic hand equipped with the e-dermis; Copyright: Larry Canner/JHU

New 'e-dermis' brings sense of touch to prosthetic hands

06/07/2018

Amputees often experience the sensation of a "phantom limb" – a feeling that a missing body part is still there. That sensory illusion is closer to becoming a reality thanks to a team of engineers at the Johns Hopkins University that has created an electronic skin. When layered on top of prosthetic hands, this e-dermis brings back a real sense of touch through the fingertips.
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Image: headset; Copyright: UTA

New headset scans the user's eye movements

05/07/2018

People with disabilities such as ALS, spinal injury or Lou Gehrig's disease, often lose use of their legs, arms or hands. Even at advanced stages of the disease, one may still retain movement in their eyes. Some technologies have incorporated eye-tracking to enable disabled persons to interact with a computer to communicate messages to a caregiver.
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Image: Collection of jelly bears and jelly bear sensors; Copyright: N. Adly / TUM

Gummi candy sensors: Scientists print microelectrode arrays on soft materials

04/07/2018

Microelectrodes can be used for direct measurement of electrical signals in the brain or heart. These applications require soft materials, however. With existing methods, attaching electrodes to such materials poses significant challenges. A team at the Technical University of Munich (TUM) has now succeeded in printing electrodes directly onto several soft substrates.
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Image: colorful schematic representation of the temperature-controlled supercontinuum generation; Copyright: Leibniz-IPHT

Temperature-controlled fiber-optic light source with liquid core

03/07/2018

In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.
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Image: Showing how gold nanoparticles trigger sequential unfolding of 3D structures; Copyright: Sumeet Mishra

Using gold nanoparticles to trigger sequential unfolding of 3D structures

29/06/2018

Researchers from North Carolina State University have developed a new technique that takes advantage of gold nanoparticles to trigger the sequential unfolding of three-dimensional structures using different wavelengths of light.
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