A Robust and Scalable Active-Matrix Driven Digital Microfluidic Platform Based on Printed-Circuit Board Technology

Lab on a Chip ◽  
2021 ◽  
Author(s):  
Yaru Xing ◽  
Yu Liu ◽  
Rifei Chen ◽  
Yuyan Li ◽  
Chengzhi Zhang ◽  
...  
Keyword(s):  
Printed Circuit Board ◽  
Circuit Board ◽  
Two Dimensional ◽  
Microfluidic Platforms ◽  
Microfluidic Platform ◽  
Active Matrix ◽  
Printed Circuit ◽  
Digital Microfluidic

Two-dimensional digital microfluidic platforms, on which droplets are actuated by electrowetting on dielectrics, have merits such as dynamic reconfigurability and ease for automation. However, concerns for digital microfluidic platforms based...

Microfluidic networks embedded in a printed circuit board

2017 ◽  
Vol 31 (19-21) ◽  
pp. 1740017
Author(s):  
Liangwei Dong ◽  
Yueli Hu
Keyword(s):  
Soft Lithography ◽  
Printed Circuit Board ◽  
New Method ◽  
Circuit Board ◽  
Adhesive Tape ◽  
Microfluidic Platforms ◽  
Microfluidic Platform ◽  
Printed Circuit ◽  
Microfluidic Networks ◽  
Lithography Technology

In order to improve the robustness of microfluidic networks in printed circuit board (PCB)-based microfluidic platforms, a new method was presented. A pattern in a PCB was formed using hollowed-out technology. Polydimethylsiloxane was partly filled in the hollowed-out fields after mounting an adhesive tape on the bottom of the PCB, and solidified in an oven. Then, microfluidic networks were built using soft lithography technology. Microfluidic transportation and dilution operations were demonstrated using the fabricated microfluidic platform. Results show that this method can embed microfluidic networks into a PCB, and microfluidic operations can be implemented in the microfluidic networks embedded into the PCB.

Two-Dimensional Optical Interconnection Based on Two-Layered Optical Printed Circuit Board

2007 ◽  
Vol 19 (6) ◽  
pp. 411-413 ◽  
Author(s):  
Sung Hwan Hwang ◽  
Mu Hee Cho ◽  
Sae-Kyoung Kang ◽  
Tae-Woo Lee ◽  
Hyo-Hoon Park ◽  
...  
Keyword(s):  
Printed Circuit Board ◽  
Circuit Board ◽  
Optical Interconnection ◽  
Two Dimensional ◽  
Printed Circuit

The restoration of temperature distribution in a two-dimensional domain by a tomographic method by using the results of measurements for electric resistance of oriented conductors

2018 ◽  
Author(s):  
В.А. Деревянко ◽  
А.Ф. Латыпов
Keyword(s):  
Mathematical Model ◽  
Temperature Distribution ◽  
Real Time ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Two Dimensional ◽  
Electronic Unit ◽  
Resistance Thermometer ◽  
Printed Circuit ◽  
Radio Electronic

Рассмотрена возможность использования “термометра сопротивления” для измерения распределения температуры в двумерной области. Создана математическая модель датчика, сводящаяся к решению томографической задачи. Важной особенностью модели является то, что число уравнений в системе линейных алгебраических уравнений (СЛАУ) больше числа переменных. Это позволяет уменьшить ошибки в исходных данных. Создана программа для определения решения СЛАУ с плохо обусловленной матрицей, позволяющая обрабатывать результаты измерений в реальном масштабе времени. Выполнен тестовый расчет. При малом числе ракурсов измерений получена удовлетворительная точность восстановления температуры. Purpose. To ensure a long period of active lifetime of space vehicles, it is necessary to use effective methods and means to control physical processes leading to premature failure of on-board radio electronic equipment both at the stage of ground testing and during active operation of the spacecraft in space. Long-term testing experience for electronic equipment shows that monitoring compliance with necessary temperature conditions of onboard equipment plays the main role in ensuring reliability. Ideally, the thermal control should be performed for all elements of radio electronic units in real time. Method. The possibility of using a “two-dimensional resistance thermometer” for recording the thermal field of a printed circuit board of an electronic unit is considered. The principle of operation of the thermometer is based on the measurement of integral resistances of extended mutually intersecting conductors in a medium with inhomogeneous temperature distribution. The registration of the integral resistances of individual conductors is possible with the help of an automated measuring system by solving the tomographic problem aimed to obtain the temperature distribution on the surface of the printed circuit board. Result. The design of the “two-dimensional temperature sensor” is considered. The sensor is technologically compatible with the design of the printed circuit board of the radio electronic unit. A mathematical model of the sensor is developed. It is reduced to the solution of a tomographic problem. A program for solving a system of linear equations with an ill-conditioned matrix is developed that provides the real-time processing for measurement results. The test calculation is performed. A satisfactory accuracy of the temperature restoration is achieved. Conclusion. A “two-dimensional resistance thermometer” can be used to measure a two-dimensional temperature field for a printed circuit board of a radio electronic unit in real time. The mathematical model allows adapting the thermometer design to a specific radio electronic unit and selecting the required accuracy of the temperature field restoration.

scholarly journals Integrated multilayer stretchable printed circuit boards paving the way for deformable active matrix

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Shantonu Biswas ◽  
Andreas Schoeberl ◽  
Yufei Hao ◽  
Johannes Reiprich ◽  
Thomas Stauden ◽  
...  
Keyword(s):  
Printed Circuit Boards ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Electronic Systems ◽  
Active Matrix ◽  
Surface Mount ◽  
Manufacturing Method ◽  
Printed Circuit ◽  
Elastomeric Matrix ◽  
Vertical Interconnect

Abstract Conventional rigid electronic systems use a number of metallization layers to route all necessary connections to and from isolated surface mount devices using well-established printed circuit board technology. In contrast, present solutions to prepare stretchable electronic systems are typically confined to a single stretchable metallization layer. Crossovers and vertical interconnect accesses remain challenging; consequently, no reliable stretchable printed circuit board (SPCB) method has established. This article reports an industry compatible SPCB manufacturing method that enables multilayer crossovers and vertical interconnect accesses to interconnect isolated devices within an elastomeric matrix. As a demonstration, a stretchable (260%) active matrix with integrated electronic and optoelectronic surface mount devices is shown that can deform reversibly into various 3D shapes including hemispherical, conical or pyramid.

scholarly journals Programming DNA origami patterning with non-canonical DNA-based metallization reactions

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Sisi Jia ◽  
Jianbang Wang ◽  
Mo Xie ◽  
Jixue Sun ◽  
Huajie Liu ◽  
...  
Keyword(s):  
Dna Sequence ◽  
Printed Circuit Board ◽  
Experimental Studies ◽  
Dna Origami ◽  
Circuit Board ◽  
Dna Bases ◽  
Two Dimensional ◽  
Site Specific ◽  
Printed Circuit ◽  
Effective Attraction

AbstractThe inherent specificity of DNA sequence hybridization has been extensively exploited to develop bioengineering applications. Nevertheless, the structural potential of DNA has been far less explored for creating non-canonical DNA-based reactions. Here we develop a DNA origami-enabled highly localized metallization reaction for intrinsic metallization patterning with 10-nm resolution. Both theoretical and experimental studies reveal that low-valence metal ions (Cu2+ and Ag+) strongly coordinate with DNA bases in protruding clustered DNA (pcDNA) prescribed on two-dimensional DNA origami, which results in effective attraction within flexible pcDNA strands for site-specific pcDNA condensation. We find that the metallization reactions occur selectively on prescribed sites while not on origami substrates. This strategy is generically applicable for free-style metal painting of alphabet letters, digits and geometric shapes on all−DNA substrates with near-unity efficiency. We have further fabricated single- and double-layer nanoscale printed circuit board (nano-PCB) mimics, shedding light on bio-inspired fabrication for nanoelectronic and nanophotonic applications.

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