Category Health/Medical

A Bio-inspired Mechano-Photonic Artificial Synapse

A bioinspired mechano-photonic artificial synapse
Biological tactile/visual neurons and mechano-photonic artificial synapse. (A) Schematic illustrations of biological tactile/visual sensory system. (B) Schematic diagram of the mechano-photonic artificial synapse based on graphene/MoS2 (Gr/MoS2) heterostructure. (i) Top-view scanning electron microscope (SEM) image of the optoelectronic transistor; scale bar, 5 μm. The cyan area indicates the MoS2 flake, while the white strip is graphene. (ii) Illustration of charge transfer/exchange for Gr/MoS2 heterostructure. (iii) Output mechano-photonic signals from the artificial synapse for image recognition. Credit: Science Advances, doi: 10.1126/sciadv.abd9117

Multifunctional and diverse artificial neural systems can incorporate multimodal plasticity, memory and supervised learning functions ...

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New Class of Versatile, High-Performance Quantum Dots Primed for Medical Imaging, Quantum Computing

A new, highly versatile class of quantum dots excel as single-photon emitters, with applications in biomedical imaging, quantum communication, cybersecurity, and many other fields. Zachary (Zack) Robinson (left) and Vladimir Sayevich (right) are part of the team that has developed these infrared-emitting quantum dots.

A new class of quantum dots deliver a stable stream of single, spectrally tunable infrared photons under ambient conditions and at room temperature, unlike other single photon emitters. This breakthrough opens a range of practical applications, including quantum communication, quantum metrology, medical imaging and diagnostics, and clandestine labeling.

“The demonstration of high single-photon purity in the infrared has immediate utility in areas such as quantum key di...

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‘Zombie’ Genes? Research shows some Genes Come to Life in the Brain after Death

Post-mortem changes may shed light on important brain studies. In the hours after we die, certain cells in the human brain are still active. Some cells even increase their activity and grow to gargantuan proportions, according to new research from the University of Illinois Chicago.

In a newly published study in the journal Scientific Reports, the UIC researchers analyzed gene expression in fresh brain tissue — which was collected during routine brain surgery — at multiple times after removal to simulate the post-mortem interval and death. They found that gene expression in some cells actually increased after death.

These ‘zombie genes’ — those that increased expression after the post-mortem interval — were specific to one type of cell: inflammatory cells called glial cells...

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New Strategy for Fighting Brain Cancer

Cancer image

Most people relate cholesterol to heart health, but it is also a critical component in the growth and spread of brain cancer. VCU Massey Cancer Center researcher Suyun Huang, Ph.D., recently discovered how cholesterol becomes dysregulated in brain cancer cells and showed that the gene responsible for it could be a target for future drugs.

The mean survival of patients with the most common and aggressive type of brain cancer, glioblastoma multiforme (GBM), is 14 months. The need to find new, effective treatments is urgent and has driven Huang, a member of the Cancer Biology research program at Massey, to detail the workings of numerous genes, proteins, enzymes and other cellular components that contribute to brain cancer growth...

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