Giant performance improvement of triboelectric nanogenerator systems achieved by matched inductor design

2021 ◽  
Author(s):  
Zhao Wang ◽  
Qian Tang ◽  
Chuncai Shan ◽  
Yan Du ◽  
Wencong He ◽  
...  
Keyword(s):  
Performance Improvement ◽  
Universal Design ◽  
Design Strategy ◽  
Triboelectric Nanogenerator ◽  
Theory And Experiments

We proposed a universal design strategy of a matched inductor for TENG with parameters studied from both theory and experiments systematically. The results show giant performance improvement for TENG system.

scholarly journals Universal Design Strategy for Products in Residential Spaces

2021 ◽  
Vol 34 (4) ◽  
pp. 87-101
Author(s):  
Jeehee Won ◽  
Jeehee Won ◽  
Jiyoon Park ◽  
Jiyoon Park ◽  
Eunje Woo ◽  
...  
Keyword(s):  
Universal Design ◽  
Design Strategy

scholarly journals MXene Enabling the Long-Term Superior Thermo-Oxidative Resistance for Elastomers

Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 493
Author(s):  
Gui-Xiang Liu ◽  
Ya-Dong Yang ◽  
Ding Zhu ◽  
Yan-Chan Wei ◽  
Shuangquan Liao ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Free Radicals ◽  
Carbon Black ◽  
Universal Design ◽  
Design Strategy ◽  
Model Material ◽  
Oxidative Process ◽  
Oxidative Resistance ◽  
Good Guide

The ability of long-term thermo-oxidative resistance is very important for elastomers in application. However, many conventional antioxidants are difficult to realize the long-term thermo-oxidative resistance. To overcome this limitation, a design strategy is introduced by combing elastomers with MXene and natural rubber (NR) is chosen as a model material. MXene is efficient in absorbing oxygen and the generated free radicals in the NR matrix and can inhibit the diffusion of oxygen toward the interior. Moreover, MXene, like graphene and carbon black, absorbs molecular chains, inhibiting the migration of MXene toward the surface of the sample. Such characteristics of MXene endow NR/MXene with the long-term outstanding thermo-oxidative resistance. For example, after three days of the thermo-oxidative process for NR/MXene, the tensile strength is 19 MPa and the retention of tensile strength is 63%, which far exceeds the effects of conventional antioxidants. This work not only provides a good guide for the universal design of elastomers with long-term thermo-oxidative resistance but also expands the application of MXene.

Molecular Design to Enhance Binaphthyl-Based Chiroptics Using Organoboron Chemistry in Isomeric Chiral Scaffolds

2022 ◽  
Author(s):  
Kai Zhang ◽  
Jingyi Zhao ◽  
Niu Zhang ◽  
Jin-Fa Chen ◽  
Nan Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Universal Design ◽  
Materials Science ◽  
Molecular Design ◽  
Design Strategy ◽  
Circularly Polarized ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

Access to high-performance circularly polarized luminescence is highly desired in materials science but it hitherto remains a considerable challenge. We herein present a conceptually universal design strategy to improve the...

scholarly journals Enhanced flight performance in non-uniformly flexible wings

2020 ◽  
Vol 17 (168) ◽  
pp. 20200352 ◽  
Author(s):  
Lionel Vincent ◽  
Min Zheng ◽  
John H. Costello ◽  
Eva Kanso
Keyword(s):  
Performance Improvement ◽  
Universal Design ◽  
Design Rule ◽  
Scaling Analysis ◽  
Flight Performance ◽  
Flexible Wings ◽  
Induced Drag ◽  
Flight Range ◽  
Potential Improvement ◽  
Convergent Design

The flexibility of biological propulsors such as wings and fins is believed to contribute to the higher performance of flying and swimming animals compared with their engineered peers. Flexibility seems to follow a universal design rule that induces bending patterns at about one-third from the distal tip of the propulsor’s span. However, the aerodynamic mechanisms that shaped this convergent design and the potential improvement in performance are not well understood. Here, we analyse the effect of heterogeneous flexibility on the flight performance (range and descent angle) of passively tumbling wings. Using experiments, numerical simulations, and scaling analysis, we demonstrate that spanwise tip flexibility that follows this empirical rule leads to improved flight performance. Improvement in flight range seems to be related to flutter-induced drag reduction. This mechanism is independent of the wing’s auto-rotation and represents a more general trait of wings with non-uniform tip flexibility.

Leadership in Teaching: Using Student Perspectives on Administration, Supervision and Private Practice

2011 ◽  
Vol 14 (1) ◽  
pp. 21-28
Author(s):  
Mary J. Emm ◽  
Christine P. Cecconi
Keyword(s):  
Student Perceptions ◽  
Clinical Supervision ◽  
Private Practice ◽  
Universal Design ◽  
Professional Preparation ◽  
Learning Activities ◽  
Functional Information ◽  
Course Content ◽  
Group Activities ◽  
Assessment Procedures

Clinical supervision is recognized as a distinctive area of practice and expertise, yet professional preparation in this area remains inadequate. This paper presents functional information describing the development and implementation of an experimental course on administration, supervision, and private practice, based on graduate student perceptions and preferences for course content and types of learning activities. Current pedagogical trends for universal design in learning and fostering student engagement were emphasized, including problem-based and collaborative learning. Results suggest that students were highly pleased with course content, interactive and group activities, as well as with assessment procedures used.

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