Multiple actuation microvalves in wax microfluidics

Lab on a Chip ◽  
2016 ◽  
Vol 16 (20) ◽  
pp. 3969-3976 ◽  
Author(s):  
María Díaz-González ◽  
César Fernández-Sánchez ◽  
Antonio Baldi
Keyword(s):  
Energy Consumption ◽  
Fast Response ◽  
Low Energy ◽  
Fully Integrated ◽  
Low Energy Consumption ◽  
New Type ◽  
Small Footprint

A new type of electrically controlled and fully integrated wax microvalve is described. The valve is designed for multiple actuation and has a small footprint, fast response and low energy consumption.

Passive Discrete Variable Stiffness Joint (pDVSJ-II): Modeling, Design, Characterization, and Testing Toward Passive Haptic Interface

2018 ◽  
Vol 11 (1) ◽  
Author(s):  
Mohammad I. Awad ◽  
Irfan Hussain ◽  
Dongming Gan ◽  
Ali Az-zu'bi ◽  
Cesare Stefanini ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Variable Stiffness ◽  
Fast Response ◽  
Low Energy ◽  
Effective Length ◽  
Haptic Interface ◽  
Discrete Variable ◽  
Low Energy Consumption ◽  
Instantaneous Switching ◽  
Different Levels

In this paper, the modeling, design, and characterization of the passive discrete variable stiffness joint (pDVSJ-II) are presented. The pDVSJ-II is an extended proof of concept of a passive revolute joint with discretely controlled variable stiffness. The key motivation behind this design is the need for instantaneous switching between stiffness levels when applied for remote exploration applications where stiffness mapping is required, in addition for the need of low-energy consumption. The novelty of this work lies in the topology used to alter the stiffness of the variable stiffness joint. Altering the stiffness is achieved by selecting the effective length of an elastic cord with hook's springs. This is realized through the novel design of the cord grounding unit (CGU), which is responsible for creating a new grounding point, thus changing the effective length and the involved springs. The main features of CGU are the fast response and the low-energy consumption. Two different levels of stiffness (low, high) can be discretely selected besides the zero stiffness. The proposed physical-based model matched the experimental results of the pDVSJ-II in terms of discrete stiffness variation curves, and the stiffness dependency on the behavior of the springs. Two psychophysiological tests were conducted to validate the capabilities to simulate different levels of stiffness on human user and the results showed high relative accuracy. Furthermore, a qualitative experiment in a teleoperation scenario is presented as a case study to demonstrate the effectiveness of the proposed haptic interface.

scholarly journals Scalable graphene electro-optical modulators for all-fibre pulsed lasers

Nanoscale ◽  
2021 ◽  
Author(s):  
Kuen Yao Y. Lau ◽  
Alexander Pyymaki Perros ◽  
Diao Li ◽  
Mariia Kim ◽  
Zhipei Sun
Keyword(s):  
Energy Consumption ◽  
Low Energy ◽  
Viable Alternative ◽  
Pulsed Lasers ◽  
Optical Modulators ◽  
Low Energy Consumption ◽  
Small Footprint

Recently, graphene electro-optical modulators arise as a viable alternative to the conventional modulators due to their broadband operation, ultrafast responsivity, small footprint, and low energy consumption. Here, we report scalable...

A Study on the Use of Bipolar-Particles-Electrodes in Decolorization of Dyeing Effluents and Its Principle

1987 ◽  
Vol 19 (3-4) ◽  
pp. 391-400 ◽  
Author(s):  
Zhou Ding ◽  
Cai Wei Min ◽  
Wang Qun Hui
Keyword(s):  
Energy Consumption ◽  
High Efficiency ◽  
Low Energy ◽  
Acid Dyes ◽  
Underlying Principle ◽  
Low Energy Consumption ◽  
Transparent Liquid

This paper studies the use of bipolar-particles-electrodes in the decolorization of dyeing effluents. Treatment of highly colored solutions of various soluble dyes (such as direct, reactive, cationic or acid dyes) and also samples of dyeing effluents gave rise to an almost colorless transparent liquid, with removal of CODcr and BOD5 being as high as over 80%. The method is characterized by its high efficiency, low energy consumption and long performance life. A discussion of the underlying principle is given.

scholarly journals A Long-Distance Communication Architecture for Medical Devices Based on LoRaWAN Protocol

Electronics ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 940
Author(s):  
Nicoleta Cristina Gaitan
Keyword(s):  
Energy Consumption ◽  
Long Range ◽  
Medical Devices ◽  
Low Energy ◽  
Area Network ◽  
Wide Area Network ◽  
Long Distance ◽  
Communication Architecture ◽  
Low Energy Consumption ◽  
Distance Communication

Recent market studies show that the market for remote monitoring devices of different medical parameters will grow exponentially. Globally, more than 4 million individuals will be monitored remotely from the perspective of different health parameters by 2023. Of particular importance is the way of remote transmission of the information acquired from the medical sensors. At this time, there are several methods such as Bluetooth, WI-FI, or other wireless communication interfaces. Recently, the communication based on LoRa (Long Range) technology has had an explosive development that allows the transmission of information over long distances with low energy consumption. The implementation of the IoT (Internet of Things) applications using LoRa devices based on open Long Range Wide-Area Network (LoRaWAN) protocol for long distances with low energy consumption can also be used in the medical field. Therefore, in this paper, we proposed and developed a long-distance communication architecture for medical devices based on the LoRaWAN protocol that allows data communications over a distance of more than 10 km.

Absorbent cotton derived mesoporous CeO2 hollow tubule for enhanced detection of p-xylene at low energy consumption

2021 ◽  
pp. 159774
Author(s):  
Jing-Shuo Liu ◽  
Bao-Yu Song ◽  
Jing Huang ◽  
Zhao-Peng Deng ◽  
Xian-Fa Zhang ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Low Energy ◽  
Absorbent Cotton ◽  
Low Energy Consumption ◽  
Mesoporous Ceo2
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