Advanced Devices for Tumor Diagnosis and Therapy.

At present, tumor diagnosis is performed using common procedures, which are slow, costly, and still presenting difficulties in diagnosing tumors at their early stage. Tumor therapeutic methods also mainly rely on large-scale equipment or non-intelligent treatment approaches. Thus, an early and accurate tumor diagnosis and personalized treatment may represent the best treatment option for a successful result, and the efforts in finding them are still in progress and mainly focusing on non-destructive, integrated, and multiple technologies. These objectives can be achieved with the development of advanced devices and smart technology that represent the topic of the current investigations. Therefore, this review summarizes the progress in tumor diagnosis and therapy and briefly explains the advantages and disadvantages of the described microdevices, finally proposing advanced micro smart devices as the future development trend for tumor diagnosis and therapy.

Moiré Engineering of Spin-Orbit Torque by Twisted WS2 Homobilayers.

Artificial moiré superlattices created by stacking 2D crystals have emerged as a powerful platform with unprecedented material-engineering capabilities. While moiré superlattices are reported to host a number of novel quantum states, their potential for spintronic applications remains largely unexplored. Here, the effective manipulation of spin-orbit torque (SOT) is demonstrated using moiré superlattices in ferromagnetic devices comprised of twisted WS2/WS2 homobilayer (t-WS2) and CoFe/Pt thin films by altering twisting angle (θ) and gate voltage. Notably, a substantial enhancement of up to 44.5% is observed in SOT conductivity at θ ≈ 8.3°. Furthermore, compared to the WS2 monolayer and untwisted WS2/WS2 bilayers, the moiré superlattices in t-WS2 enable a greater gate-voltage tunability of SOT conductivity. These results are related to the generation of the interfacial moiré magnetic field by the real-space Berry phase in moiré superlattices, which modulates the absorption of the spin-Hall current arising from Pt through the magnetic proximity effect. This study highlights the moiré physics as a new building block for designing enhanced spintronic devices.

P-Type 2D Semiconductors for Future Electronics.

2D semiconductors represent one of the best candidates to extend Moore's law for their superiorities, such as keeping high carrier mobility and remarkable gate-control capability at atomic thickness. Complementary transistors and van der Waals junctions are critical in realizing 2D semiconductors-based integrated circuits suitable for future electronics. N-type 2D semiconductors have been reported predominantly for the strong electron doping caused by interfacial charge impurities and internal structural defects. By contrast, superior and reliable p-type 2D semiconductors with holes as majority carriers are still scarce. Not only that, but some critical issues have not been adequately addressed, including their controlled synthesis in wafer size and high quality, defect and carrier modulation, optimization of interface and contact, and application in high-speed and low-power integrated devices. Here the material toolkit, synthesis strategies, device basics, and digital electronics closely related to p-type 2D semiconductors are reviewed. Their opportunities, challenges, and prospects for future electronic applications are also discussed, which would be promising or even shining in the post-Moore era.

[Analysis of essential oil in herbal pair Artemisia annua-Agastache rugosa by GC-MS and chemometric resolution method].

Gas chromatograph-mass spectrometry, chemometric resolution method (CRM) and overall volume integration method were used to analyze the essential components of herbal pair Artemisia annua-Agastache rugosa (AA-AR) and compare it with that of single herbs AA and AR. The results showed that the components of volatile oil of herbal pair (AA-AR) were different from that of single herb drug in quality and quantity. 70, 69, and 48 essential components in essential oil of herbal pair (AA-AR), AA and AR were determined, accounting for about 85.93%, 88.85% and 93.23% of the total volatile oil, respectively. The volatile active components of the essential oils compounds in number are almost the sum of that of two single herbs, are mainly from herb AA, and the contents of each component from herb AR were relatively high. There are 51 common active constituents shared by herbal pair AA-AR and AA, and 34 common active constituents shared by herbal pair AA-AR and AR. There are 7 new components in the essential oils of herbal pair AA-AR, the relative content of arteannuic acid (2.99%) and p-propenyl-anisole (1.92%) are higher than others.