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Dec 25, 2024

From Earth to alien worlds: Exploring the fundamental limits to life

Posted by in categories: alien life, evolution, genetics

Extraterrestrial and artificial life have long captivated the human mind. Knowing only the building blocks of our own biosphere, can we predict how life may exist on other planets? What factors will rein in the Frankensteinian life forms we hope to build in laboratories here on Earth?

An open-access paper published in Interface Focus and co-authored by several SFI researchers takes these questions out of the realm of science fiction and into scientific laws.

Reviewing case studies from thermodynamics, computation, genetics, cellular development, , , and evolution, the paper concludes that certain fundamental limits prevent some forms of life from ever existing.

Dec 25, 2024

Researchers reveal full-gray optical trap in structured light

Posted by in categories: bioengineering, nanotechnology, particle physics

A research group led by Prof. Yao Baoli and Dr. Xu Xiaohao from Xi’an Institute of Optics and Precision Mechanics (XIOPM) of the Chinese Academy of Sciences have revealed a full-gray optical trap in structured light, which is able to capture nanoparticles but appears at the region where the intensity is neither maximized nor minimized. The study is published in Physical Review A.

The optical trap is one of the greatest findings in optics and photonics. Since the pioneering work by Arthur Ashkin in the 1970s, the has been employed in a broad range of applications in life sciences, physics, and engineering. Akin to its thermal and acoustic counterparts, this trap is typically either bright or dark, located at the field intensity maxima or minima.

In this study, researchers developed a high-order multipole model for gradient forces based on multipole expansion theory. Through immersing the Si particles in the structured light with a petal-shaped field, they found that the high-order multipole gradient forces can trap Si particles at the optical intensity, which is neither maximized nor minimized.

Dec 25, 2024

Nanovaccine derived from pre-chemotherapy tumors combats multiple tumors in mice

Posted by in categories: biotech/medical, nanotechnology

A research team led by Prof. Nie Guangjun from the National Center for Nanoscience and Technology (NCNST) of the Chinese Academy of Sciences (CAS) and collaborators have demonstrated a tumor membrane antigens-based nanovaccine derived from liposomal doxorubicin treated tumor tissues, which is efficacious in inducing a potent immunological defense against tumors. The study is published online in Cell Reports Medicine.

For solid tumor surgeries, challenges remain in postoperative tumor recurrence and metastasis. The correlation between postoperative tumor recurrence and metastasis and the host’s antitumor immune status is well-established. Personalized cancer vaccines, using the patient’s own tumor as an antigen source, stimulate a robust immune response that is efficacious in eliminating residual neoplastic foci following as well as in targeting metastatic lesions at a distance, significantly reducing the risk of postoperative tumor recurrence and metastasis.

The efficacy of autologous tumor in has been limited by their weak immunogenicity. The tumor contains tumor-presented antigens and associated antigens, which can be developed into a personalized antigen library that more accurately reflects the expression of tumor antigens. Vaccines based on autologous tumor cell membrane antigens have been developed.

Dec 25, 2024

Color shifts at nanoscale: Researchers develop real-time visualization system to observe stretchable technology

Posted by in categories: innovation, nanotechnology

Application of graph theory in liver research: A review.

Dec 25, 2024

Breakthrough New Material Transforms Heavy Oil Into High-Value Fuels

Posted by in categories: chemistry, energy

ZMQ-1, a novel aluminosilicate zeolite with interconnected meso-microporous channels, addresses limitations of traditional zeolites by enhancing stability and catalytic efficiency.

Researchers have developed a groundbreaking aluminosilicate zeolite, ZMQ-1, designed with a distinctive intersecting meso-microporous channel system. This innovation is poised to significantly improve catalytic processes in the petrochemical industry.

Published in Nature, the study presents ZMQ-1 as the first aluminosilicate zeolite featuring interconnected intrinsic 28-ring mesopores. This breakthrough addresses long-standing challenges in zeolite design, including limitations in pore size, stability, and catalytic efficiency.

Dec 25, 2024

Physicists Unlock the Potential of In-Plane Magnetic Fields for Advanced Magnetotransport

Posted by in categories: physics, transportation

In-plane magnetic fields unveil novel Hall effect behaviors in advanced materials, transforming our understanding of electronic transport.

Researchers from the Institute of Science Tokyo have reported that in-plane magnetic fields induce an anomalous Hall effect in EuCd₂Sb₂ films. By investigating how these fields alter the electronic structure, the team uncovered a significant in-plane anomalous Hall effect. This discovery opens new avenues for controlling electronic transport in magnetic fields, with potential applications in magnetic sensors.

The Hall effect, a fundamental phenomenon in material science, occurs when a material carrying an electric current is subjected to a magnetic field, creating a voltage perpendicular to both the current and the field. While the Hall effect has been extensively studied in materials under out-of-plane magnetic fields, the effects of in-plane magnetic fields have received comparatively little attention.

Dec 25, 2024

Miniaturized Spectroscopy Delivers Real-Time Monitoring in Narrow Spaces

Posted by in categories: biotech/medical, electronics

The all-in-one optical fiber spectrometer offers a compact microscale design with performance on par with traditional laboratory-based systems.

Miniaturized spectroscopy systems capable of detecting trace concentrations at parts-per-billion (ppb) levels are critical for applications such as environmental monitoring, industrial process control, and biomedical diagnostics.

However, conventional bench-top spectroscopy systems are often too large, complex, and impractical for use in confined spaces. Traditional laser spectroscopy techniques rely on bulky components—including light sources, mirrors, detectors, and gas cells—to measure light absorption or scattering. This makes them unsuitable for minimally invasive applications, such as intravascular diagnostics, where compactness and precision are essential.

Dec 25, 2024

Solar Orbiter’s Stunning New Views of the Sun Reveal Hidden Dynamics

Posted by in category: space

The Solar Orbiter mission has produced unprecedented high-resolution images of the Sun, showcasing the complex interplay of its magnetic fields and plasma movements. These images, which include detailed views of sunspots and the corona, enhance our understanding of solar phenomena.

Dec 25, 2024

What was Isaac Newton’s childhood like?

Posted by in category: space

Isaac Newton, the brilliant physicist and mathematician, revolutionized our understanding of the universe with his laws of motion and universal gravitation, forever changing the course of scientific inquiry.

Dec 25, 2024

Dynamical Modeling of Extracted Connectomes

Posted by in category: futurism

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