scholarly journals High-speed droplet generation on demand driven by pulse laser-induced cavitation

Lab on a Chip ◽  
2011 ◽  
Vol 11 (6) ◽  
pp. 1010 ◽  
Author(s):  
Sung-Yong Park ◽  
Ting-Hsiang Wu ◽  
Yue Chen ◽  
Michael A. Teitell ◽  
Pei-Yu Chiou
Keyword(s):  
Pulse Laser ◽  
High Speed ◽  
Droplet Generation ◽  
On Demand

Development of the LBM non-isothermal flows with arbitrarily large Mach number

2021 ◽  
pp. 62-71
Author(s):  
Елизавета Вячеславовна Зипунова ◽  
Анастасия Юрьевна Перепёлкина ◽  
Андрей Владимирович Закиров
Keyword(s):  
Mach Number ◽  
High Speed ◽  
Classical Method ◽  
Discrete Distribution ◽  
Explicit Calculation ◽  
Time Layer ◽  
Boltzmann Equations ◽  
On Demand ◽  
Small Flow ◽  
Lattice Boltzmann Equations

При решении задач динамики жидкостей и газов в области малых скоростей потока и при изотермических условиях с успехом применяется метод решеточных уравнений Больцмана (LBM). Для решения дискретного уравнения Больцмана может быть использован новый метод Particles-on-Demand (PonD), в котором в каждой точке сетки дискретизация функции распределения в пространстве скоростей центрирована относительно текущей скорости потока. В отличие от классического LBM, метод PonD применим не только для задач с малыми скоростями потока и при изотермических условиях. В данной работе реализован метод PonD D1Q5 с итерационным расчетом скорости переноса и явным расчетом первых трех моментов, включая скорости переноса. Показано, что рассмотренная модификация метода PonD хоть и накладывает ограничения на параметры, позволяет проводить расчеты в большем диапазоне допустимых скоростей. The purpose of the paper is to demonstrate applicability of the Particle on Demand (PonD) D1Q5 method with the explicit calculation of the first three moments to problem with high speed of the flow. The standard LBM is applicable for small flow velocities. Thus to overcome this limitation we use PonD. In this work, we use conservative version of PonD - the D1Q5 method with the explicit calculation of the first three moments. Methodology. The Pond over LBM was applied to the Riemann problem in order to demonstrate the advantage of the method. In this work, we choose the case when contact discontinuities could propagate at variable speed. Findings. If the interpolation pattern is fixed relative to the point at which there is a current update of the discrete distribution function, then the transfer step can be written explicitly, thus the scheme is conservative. On the other hand, this imposes additional restrictions on the temperature and the flow rate. But even if the PonD scheme is limited to a fixed interpolation pattern, it is possible to simulate flows with larger values of the Mach number than in the case when the classical method of lattice Boltzmann equations is used. Originality/value. In the described particular case of the PonD method, it is possible to avoid iterations by calculating the temperature and velocity values directly at a new time layer. In this work, we have investigated the properties and the range of applicability (admissible values of temperature and velocity) of such modification of PonD.

A digital acoustofluidic device for on-demand and oil-free droplet generation

2018 ◽  
Vol 30 (8) ◽  
pp. 084001 ◽  
Author(s):  
Keke Chen ◽  
Chenxi Sui ◽  
Yue Wu ◽  
Zheng Ao ◽  
Shi-shang Guo ◽  
...  
Keyword(s):  
Droplet Generation ◽  
On Demand

scholarly journals Microfluidic on-demand droplet generation, storage, retrieval, and merging for single-cell pairing

Lab on a Chip ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 493-502 ◽  
Author(s):  
Hesam Babahosseini ◽  
Tom Misteli ◽  
Don L. DeVoe
Keyword(s):  
Single Cell ◽  
Aqueous Phase ◽  
Microfluidic Device ◽  
Droplet Generation ◽  
Microfluidic Platform ◽  
On Demand

A multifunctional microfluidic platform combining on-demand aqueous-phase droplet generation, multi-droplet storage, and controlled merging of droplets selected from a storage library in a single integrated microfluidic device is described.

scholarly journals High Speed Roll-to-Roll Printable Transistor Enabled by a Pulsed Light Curable CNT Ink

2019 ◽  
Vol 3 (2) ◽  
pp. 33
Author(s):  
Peter Mack Grubb ◽  
Farzad Mokhtari Koushyar ◽  
Travis Lenz ◽  
Aref Asghari ◽  
Gongwen Gan ◽  
...  
Keyword(s):  
High Speed ◽  
Flash Lamp ◽  
Pulsed Light ◽  
Production Methods ◽  
On Demand ◽  
Roll To Roll ◽  
Drop On Demand ◽  
Visible Light Range ◽  
Strong Energy ◽  
Triton X

This paper reports the first high speed roll-to-roll printable transistor using a carbon nanotube (CNT) semiconducting layer. The transistor is made possible through the development of a pulsed light curable CNT ink compatible with typical drop on demand inkjet cartridges. This CNT ink uses a xylene based solvent with methanol, glycerin, and Triton X-100 modifiers to create an evaporable solution with appropriate absorption spectra for a mercury or xenon flash lamp with strong energy transmission in the UVB to mid visible light range, allowing the solution to absorb the energy from the flash lamp and evaporate. Transistor dimensions were defined by the capabilities of a typical roll-to-roll drop on demand cartridge. The final device demonstrated an on/off ratio of 104, representing performance similar to gravure printed devices. This represents the first CNT ink which can be used in high speed production methods without long thermal curing steps in the workflow.

scholarly journals TrustWalker: An Efficient Trust Assessment in Vehicular Internet of Things (VIoT) with Security Consideration

Sensors ◽  
2020 ◽  
Vol 20 (14) ◽  
pp. 3945
Author(s):  
Muhammad Sohail ◽  
Rashid Ali ◽  
Muhammad Kashif ◽  
Sher Ali ◽  
Sumet Mehta ◽  
...  
Keyword(s):  
Internet Of Things ◽  
High Speed ◽  
Vehicular Networks ◽  
Information Dissemination ◽  
Search Algorithm ◽  
Modern Technology ◽  
Primary Concern ◽  
On Demand ◽  
Demand Routing ◽  
Route Search

The Internet of Things (IoT) is a world of connected networks and modern technology devices, among them vehicular networks considered more challenging due to high speed and network dynamics. Future trends in IoT allow these inter networks to share information. Also, the previous security solutions to vehicular IoT (VIoT) much emphasize on privacy protection and security related issues using public keys infrastructure. However, the primary concern about efficient trust assessment, authorized users malfunctioning, and secure information dissemination in vehicular wireless networks have not been explored. To cope with these challenges, we propose a trust enhanced on-demand routing (TER) scheme, which adopts TrustWalker (TW) algorithm for efficient trust assessment and route search technique in VIoT. TER comprised of novel three-valued subjective logic (3VSL), TW algorithm, and ad hoc on-demand distance vector (AODV) routing protocol. The simulated results validate the accuracy of the proposed scheme in term of throughput, packet drop ratio (PDR), and end to end (E2E) delay. In the simulation, the execution time of the TW algorithm is analyzed and compared with another route search algorithm, i.e., Assess-Trust (AT), by considering real-world online datasets such as Pretty Good Privacy and Advogato. The accuracy and efficiency of the TW algorithm, even with a large number of vehicle users, are also demonstrated through simulations.

High-speed network for delivery of education-on-demand

1996 ◽  
Author(s):  
Carlos Cordero ◽  
Dale Harris ◽  
Jeff Hsieh
Keyword(s):  
High Speed ◽  
On Demand ◽  
High Speed Network
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