Planar nanoscale vacuum channel transistors based on resistive switching.

Resistance switching (RS) offers promising applications in a variety of areas. In particular, silicon oxide (SiO) under RS can serve as electron sources in new types of miniature vacuum electron tubes. In this work, planar nanoscale vacuum channel transistors (NVCTs) with graphene electrodes and RS SiOelectron sources were developed.

Spin-decoupled excitation and wavefront shaping of structured surface waves on-chip terahertz metasurfaces.

Surface waves (SWs) are of great importance in terahertz (THz) photonics applications due to their subwavelength properties. Hence, it is crucial to develop surface wavefront shaping techniques, which is urgent in modern information technologies. In this paper, a new scheme is proposed to realize SW excitation and spin-decoupled wavefront shaping with an ultracompact planar meta-device working in the THz range.

Efficacy of Intravitreal Injection of Filtered Modified Low-Dose Triamcinolone Acetonide and Ranibizumab on Pseudophakic Cystoid Macular Edema.

Purpose: To compare the visual and morphological effects between intravitreal injection of filtered modified 2 mg triamcinolone acetonide (TA) and 0. 5 mg ranibizumab in patients with pseudophakic cystoid macular edema (PCME).

Methods: A retrospective, interventional study was conducted from January 2015 to February 2020 involving patients with PCME after uneventful cataract surgery.

Efficient and Dense Electron Emission from a SiO Tunneling Diode with Low Poisoning Sensitivity.

We report a tunneling diode enabling efficient and dense electron emission from SiO with low poisoning sensitivity. Benefiting from the shallow SiO channel exposed to vacuum and the low electron affinity of SiO (0.9 eV), hot electrons tunneling into the SiO channel from the cathode of the diode are efficiently emitted into vacuum with much less restriction in both space and energy than those in previous tunneling electron sources.

Intracameral anti-VEGF injection for advanced neovascular glaucoma after vitrectomy with silicone oil tamponade.

Aim: To evaluate the effect of intracameral injection of conbercept for the treatment of advanced neovascular glaucoma (NVG) after vitrectomy with silicone oil tamponade.

Methods: Conbercept 0.5 mg/0.

Thin platelet-like COF nanocomposites for blood brain barrier transport and inhibition of brain metastasis from renal cancer.

Effective treatment of brain metastases is hindered by the blood-brain barrier (BBB) and the rapid development of resistance to drug therapy. Moreover, the clinical application of general formulations is hampered by biological barriers and biological elimination. To tackle this challenge, we report a feasible approach for the assembly of polymer-covalent organic framework (COF) nanocomposites into 150 nm thin platelets as a drug delivery vehicle for enhanced retention in brain tumours.