An Early Cancer Diagnosis Platform based on Micro-magnetic SensorArray Demonstrates Ultra-high Sensitivity

TL;DR: A heterojunction photodetector made from germanium and perovskite layers can detect light in the visible and near-infrared ranges, showing potential for use in a wide range of applications, including in optical communications and next-generation optoelectronics.

TL;DR: This review introduces three different MR devices from the fundamental perspectives, followed by the fabrication and surface modification of the MR sensors, and the research on MR biosensors for the detection of protein biomarkers and genotyping.

Abstract: Single‐crystalline perovskites are ideal candidates for lasing and other optoelectronic applications. Although significant efforts have been made to grow both bulk single‐crystalline perovskites in liquid solution, their dimensions are still too large to make nanoscale whispering‐gallery‐mode (WGM) resonator based lasers that possess high quality (Q) factor and small volume. Besides, most reported perovskite resonators do not possess atomically smooth surfaces and facets, which limits the Q and thereby increases the lasing threshold. Here, atomically smooth triangular PbI2 templates are fabricated on a mica substrate by the vapor phase deposition method and are converted to atomically smooth perovskites which have regular and unwrinkled facets with average surface roughness less than 2 nm. By using a CH3NH3PbI3 nanoplatelet with a side length of 27 µm and thickness of 80 nm, room temperature WGM lasing with a Q up to 2600 is demonstrated, the highest reported for hybrid organic–inorganic perovskite nanoplatelets. In addition, the volume of the WGM mode is reduced significantly in comparison with the prior reports. The realized high‐quality triangular CH3NH3PbI3 perovskite nanoplatelets with high Q factor and small volume are expected to perform as ideal cavities for long pulse durations lasers and would find potential applications in integrated optoelectronic devices.

TL;DR: In this paper, three different types of magnetic nanostructures, disks in the vortex state, synthetic antiferromagnetic particles and nanowires, are discussed, by explaining their interesting properties and how they behave under an applied external field.

TL;DR: The fourth edition of the Electrodynamics textbook as discussed by the authors provides a rigorous, yet clear and accessible treatment of the fundamentals of electromagnetic theory and offers a sound platform for explorations of related applications (AC circuits, antennas, transmission lines, plasmas, optics and more).

TL;DR: In the DNP system, the specificity of the reaction was assessed by inhibition with hapten, and the reaction of immune serum against DNP with DNP-protein, adsorbed to the tubes, was completely inhibited by haptens in solution.

TL;DR: In this paper, the specificity of the DNP system was assessed by inhibition with hapten, and the reaction of immune serum against DNP with DNP-protein, adsorbed to the tubes, was completely inhibited by haptens in solution.

TL;DR: Highly sensitive, label-free, multiplexed electrical detection of cancer markers using silicon-nanowire field-effect devices in which distinct nanowires and surface receptors are incorporated into arrays opens up substantial possibilities for diagnosis and treatment of cancer and other complex diseases.