Ultraviolet electroluminescence from Schottky type LED device is demonstrated. The device prototype is based on Schottky junctions formed between Au and the top ends of ZnO nanowire arrays. Rectifying current-voltage characteristics are observed, and three different charge transport mechanisms are discussed in detail. Excitonic electroluminescence at around 380 nm is detected at high forward bias and the linear relationship between intensity and current suggests a LED device performance. The observation of LED signals from the simple Schottky structure provides a potential supplement to the category of ultraviolet LED devices. Published by AIP Publishing.

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Background: Regular exercise has been shown to have a beneficial effect on primary osteoporosis (POP). However, current exercise prescriptions have limitations such as insufficient individualized features and low participant compliance, which in turn limit their application in clinical practice. In this study, we propose to establish a personalized exercise prescription based on the Chinese traditional exercise-Yi Jin Jing, combined with treadmill exercises and strength training, and then observe its effects on pain, muscle strength, balance, bone mineral density (BMD) and bone metabolic indexes in patients with POP.Methods: This trial is a single-center, randomized, assessor-blinded, controlled clinical study. We will recruit 40 patients with POP and assign them to the control group and the experimental group in a 1:1 ratio according to the intended protocol. The control group received 24 weeks of conventional medication and health promotion, and the experimental group received 24 weeks of personalized exercise prescription intervention (Yijinjing, treadmill exercises, and strength training). Outcome measures include pain (visual analogue scale), muscle strength (bilateral upper limb grip strength and isometric muscle strength of the trunk, hip, and knee), balance (Balance test with eyes open and closed while standing on one leg), and BMD (Lumbar spine 2-4 and femoral neck). In addition, bone metabolism indicators include parathyroid hormone, osteocalcin, 25-hydroxyvitamin D3 (1,25(OH) 2D3), type I procollagen aminoterminal peptide and type I collagen carboxy-terminal peptide. Outcome measures will be assessed before and after 24 weeks of intervention. Statistical analysis was performed by SPSS22.0.Discussion: This trial aimed to enrich the content and form of exercise rehabilitation prescriptions for patients with POP, which is conducive to improving the exercise rehabilitation effect and quality of life in this population.

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A nonselective micropatterning method of self-assembled monolayers (SAMs) based on laser and phase-shifting mask (PSM) is demonstrated. Laser beam is spatially modulated by a PSM, and periodic SAM patterns are generated sequentially through thermal desorption. Patterned wettability is achieved with alternating hydrophilic/hydrophobic stripes on octadecyltrichlorosilane monolayers. The substrate is then used to assemble CdS semiconductor nanowires (NWs) from a solution, obtaining well-aligned NWs in one step. Our results show valuably the application potential of this technique in engineering SAMs for integration of functional devices.