Name: a 3d-printed chamber for organic optoelectronic device degradation testing
Uploaded: 2018-08-10T13:00:00.000+00:00
Duration: 8 min 29 s
Description: Watch this Scientific Journal Video about A 3D-printed Chamber for Organic Optoelectronic Device Degradation Testing at JoVE.com

作者承认彼得 Jonosson 和里昂新的媒介中心为3D 打印分庭。这项研究得到了 436100-2013 RGPIN, ER15-11-123, 工程优秀本科生暑期研究奖的麦克马斯特院长和本科生研究机会计划的支持。

<ol>
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P., Forrest, S. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=4.2%+efficient+organic+photovoltaic+cells+with+low+series+resistances.">4.2% efficient organic photovoltaic cells with low series resistances.</a> Applied Physics Letters. 84 (16), 3013-3015 (2004).</li><li>Hauch, J. A., Schilinsky, P., Choulis, S. A., Rajoelson, S., Brabec, C. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+impact+of+water+vapor+transmission+rate+on+the+lifetime+of+flexible+polymer+solar+cells.">The impact of water vapor transmission rate on the lifetime of flexible polymer solar cells.</a> Applied Physics Letters. 93 (10), 103306 (2008).</li><li>Norrman, K., Madsen, M. V., Gevorgyan, S. A., Krebs, F. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Degradation+Patterns+in+Water+and+Oxygen+of+an+Inverted+Polymer+Solar+Cell.">Degradation Patterns in Water and Oxygen of an Inverted Polymer Solar Cell.</a> Journal of the American Chemical Society. 132 (47), 16883-16892 (2010).</li><li>Dameron, A. A., Reese, M. O., Moriconie, T. J., Kempe, M. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Understanding+Moisture+Ingress+and+Packaging+Requirements+for+Photovoltaic+Modules.">Understanding Moisture Ingress and Packaging Requirements for Photovoltaic Modules.</a> Photovoltaics International. 5, 121-130 (2009).</li><li>Standard Test Method for Water Vapor Transmission Rate of Sheet Materials Using Dynamic Relative Humidity Measurement. ASTM E398 - 13 Available from: <a target="_blank" href="https://www.astm.org/Standards/E398">https://www.astm.org/Standards/E398</a> (2013)</li><li>Basha, R. K., Konno, K., Kani, H., Water Kimura, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Water+Vapor+Transmission+Rate+of+Biomass+Based+Film+Materials.">Water Vapor Transmission Rate of Biomass Based Film Materials.</a> Engineering in Agriculture, Environment and Food. 4 (2), 37-42 (2011).</li><li>Kim, N., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+correlation+study+between+barrier+film+performance+and+shelf+lifetime+of+encapsulated+organic+solar+cells.">A correlation study between barrier film performance and shelf lifetime of encapsulated organic solar cells.</a> Solar Energy Materials and Solar Cells. 101, 140-146 (2012).</li><li>Reese, M. O., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Pathways+for+the+degradation+of+organic+photovoltaic+P3HT:+PCBM+based+devices.">Pathways for the degradation of organic photovoltaic P3HT: PCBM based devices.</a> Solar Energy Materials and Solar Cells. 92 (7), 746-752 (2008).</li><li>Kempe, M. D., Reese, M. O., Dameron, A. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Evaluation+of+the+sensitivity+limits+of+water+vapor+transmission+rate+measurements+using+electrical+calcium+test.">Evaluation of the sensitivity limits of water vapor transmission rate measurements using electrical calcium test.</a> Review of Scientific Instruments. 84 (2), 025109 (2013).</li><li>Reese, M. O., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Consensus+stability+testing+protocols+for+organic+photovoltaic+materials+and+devices.">Consensus stability testing protocols for organic photovoltaic materials and devices.</a> Solar Energy Materials and Solar Cells. 95 (5), 1253-1267 (2011).</li><li>. Current landscape of standardisation efforts in organic and printed electronics 2015 - a VAMAS review Available from: <a target="_blank" href="https://www.researchgate.net/publication/278035615_Current_landscape_of_standardisation_efforts_in_organic_and_printed_electronics_2015_-_a_VAMAS_review">https://www.researchgate.net/publication/278035615_Current_landscape_of_standardisation_efforts_in_organic_and_printed_electronics_2015_-_a_VAMAS_review</a> (2015)</li></ol>

作者没有什么可透露的。

重新创建这个实验的关键步骤包括印刷分庭, 以避免裂缝, 缝隙, 或不良的填充特性, 可以减少 WVTR, 密封的房间, 以防止任何水分和氧气的入口收紧 KF50 钳在顶部和底部腔之间实现完全密封, 使用真空额定的低压环氧树脂围绕触头或任何贯穿件可, 以防止任何泄漏, 并使用适当的 O 形环放置在试样和顶腔之间创建密封, 并足够的压力, 拧紧固定环上的螺钉以防止泄漏, 而不开裂试样。O 形环应完全适合于...

基于π共轭半导体有机分子和 organometal 卤化物的有机和钙钛矿光电器件、太阳能电池和发光二极管是一个快速发展的研究领域。有机发光二极管 (oled) 已经是照明和显示1的主要技术元素, 有机光伏已经开始实现效率, 使它们与非晶硅2竞争。近年来, 以钙钛矿为基础的光吸收和发光器件的快速发展3、4、5表明, 低成本、易于加工的设备可能很快就会发现广泛的部署。然而, 所有这些技术都受到大气污染物的敏感性, 特别是湿气和氧气, 这限制了它们有效寿命6、7、8、9。
对于研究此类系统的研究人员来说, 有一个适应性强、易于使用、便携和可重用的腔室来保护这些敏感材料或以控制方式10、11将其暴露在污染物中是有用的。尽管可以使用 glovebox 对空气敏感器件进行表征, 但这些大型、昂贵和固定位置的惰性环境可能与可能需要的范围广泛的特性不相容。提供一个可移植的替代品, 里斯等。10提出了一种基于标准真空法兰的小金属腔, 适用于有机器件的电学和光学特性表征。我们已经适应了这一设计, 使它更便宜, 更多才多艺, 通过使用 3 d 印刷生产室组件。使用 3 d 印刷, 而不是加工, 允许快速, 经济划算的调整, 以改变样品或环境要求, 同时保持基本设计的效用。在这项贡献中, 我们概述了制作这样一个腔室的程序, 并用它来提取有机二极管器件的电流-电压特性。
有机和钙钛矿设备的良好封装应该有 WVTRs 10-3 -10-6克/米2/天的长期设备稳定性12,13, 以确保很少水进入有机设备, 即使在非常苛刻的条件。由于本会议厅被设计为测试目的的受控环境, 而不是长期贮存或封装方法, 因此对有效分庭的要求并不严格。分室应能够在合理的时间内维持设备的性能, 以进行表征实验。使用 PLA 的标准操作程序结果在一个房间, 可以使用数天甚至几周的合并气体流量, 没有重大损失的设备属性。
改变材料, 甚至是腔体的形状和大小, 都会严重影响污染物从空气中渗透到室内。因此, 需要仔细监测水分和氧气的进入, 以确定燃烧室的功效。此外, 我们还制作了分庭, 概述了一个简单的程序, 以确定 WVTR 的房间, 使用商用湿度传感器, 建立一个时间表, 使用的会议厅进行试验。
这样一个简单, 但多才多艺的房间允许进行多种类型的实验。它们可以充当 glovebox 外的惰性大气环境, 适合通过电气馈端口和窗口进行电气和光学特性的表征。它们的可移植性使它们能够与实验室以外的标准电气特性设备一起使用, 这在测试可靠性14或获得设备的认证测量方面是有用的。性能15。这些分庭对于研究引入污染物对受控降解试验的影响, 以及简单的修改, 也特别有用。使用3D 打印可以显著、快速地适应更改设备布局、大小或测试要求。

<table><tbody><tr><td>ORION DELTA DESKTOP 3D PRINTER RTP</td><td>SeeMeCNC</td><td>87999</td><td>&lt;strong&gt;Known in Report As:&lt;/strong&gt; 3D Printer</td></tr><tr><td>1.75 mm PLA Filament</td><td>SeeMeCNC</td><td>50241</td><td>&lt;strong&gt;Known in Report As:&lt;/strong&gt; PLA</td></tr><tr><td>Somos&amp;reg; WaterShed XC 11122 chamber</td><td>Somos</td><td>printed at Custom Prototypes, Toronto.</td><td>https://www.dsm.com/products/somos/en_US/products/offerings-somos-water-shed.html&lt;br/&gt; &lt;strong&gt;Known in Report As:&lt;/strong&gt; Water resistant polymer</td></tr><tr><td>CURA</td><td>CURA</td><td></td><td>https://ultimaker.com/en/products/cura-software&lt;br/&gt; &lt;strong&gt;Known in Report As:&lt;/strong&gt; slicing software</td></tr><tr><td>Soldering iron with 600&amp;deg; F tip</td><td>Weller</td><td>WTCPT</td><td></td></tr><tr><td>Xtralien X100 Source Measure Unit</td><td>Ossila</td><td>E561</td><td>&lt;strong&gt;Known in Report As:&lt;/strong&gt; SMU</td></tr><tr><td>ZIF Test Board for Pixelated Anode Substrates</td><td>Ossila</td><td>E221</td><td>&lt;strong&gt;Known in Report As:&lt;/strong&gt; Zero insetion force/ZIF Test Board;</td></tr><tr><td>BNC Cable</td><td></td><td></td><td></td></tr><tr><td>Generic USB A - B</td><td></td><td></td><td></td></tr><tr><td>Generic USB A - Micro</td><td></td><td></td><td></td></tr><tr><td>#12 O-Ring</td><td></td><td></td><td>Source unkown&lt;br/&gt; &lt;strong&gt;Known in Report As:&lt;/strong&gt; o-ring</td></tr><tr><td>116 Butyl O-Ring</td><td>Global Rubber Products</td><td>116 VI70</td><td>Bought in-store&lt;br/&gt; &lt;strong&gt;Known in Report As:&lt;/strong&gt; o-ring</td></tr><tr><td>Retaining ring</td><td>McMaster</td><td>NA</td><td>3D printed in-house</td></tr><tr><td>Bottom Chamber</td><td>McMaster</td><td>NA</td><td>3D printed in-house</td></tr><tr><td>Top Chamber</td><td>McMaster</td><td>NA</td><td>3D printed in-house</td></tr><tr><td>KF50 Cast Clamp (Aluminum)</td><td>Kurt J. Lesker</td><td>QF50-200-C</td><td></td></tr><tr><td>KF50 Centering Ring (Aluminum)</td><td>Kurt J. Lesker</td><td>QF50-200-BRB</td><td></td></tr><tr><td>Sn60/Pb40 Solder</td><td>MG Chemicals</td><td>4895-2270</td><td></td></tr><tr><td>#4-40 x 3/16&quot; machine screw</td><td></td><td></td><td>Hardware store</td></tr><tr><td>#4-40 IntThrd Brass TaperSingleVane Insert For Thermoplastic</td><td>Fastenal</td><td>11125984</td><td>Fastenal requires to be affiliated with company/university&lt;br/&gt; &lt;strong&gt;Known in Report As:&lt;/strong&gt; #4-40 brass tapered threaded insert</td></tr><tr><td>Varian Torr Seal Vacuum Equipment High Vacuum Epoxy</td><td>Vacuum Products Canada Inc.</td><td></td><td>&lt;strong&gt;Known in Report As:&lt;/strong&gt; low-pressure epoxy</td></tr><tr><td>Smiths Interconnect/IDI Contact Probes HEADED RADIUS</td><td>Mouser Electornics</td><td>818-S-100-D-3.5-G</td><td>&lt;strong&gt;Known in Report As:&lt;/strong&gt; pogo pin</td></tr><tr><td>Smiths Interconnect/IDI Contact Probes Receptacle Solder Cup</td><td>Mouser Electornics</td><td>818-R-100-SC</td><td>&lt;strong&gt;Known in Report As:&lt;/strong&gt; solder cup</td></tr><tr><td>1/4&quot; Teflon Tubing</td><td></td><td></td><td>Hardware store</td></tr><tr><td>Teflon tape</td><td></td><td></td><td>Hardware store</td></tr><tr><td>1/4&quot; Tube x 1/8&quot; Male NPT Nickel Plated Brass Push-to-Connect Connector</td><td>Fastenal</td><td>442064</td><td>Not the same ones used for this study, but are fuctionally equivalent&lt;br/&gt; &lt;strong&gt;Known in Report As:&lt;/strong&gt; push-to-connect pneumatic connector</td></tr><tr><td>1/8&quot; NPT Tap and T-wrench</td><td></td><td></td><td>Hardware store</td></tr><tr><td>1/4&quot; Tube Push-to-Connect Manually Operated Valves</td><td>Fluidline</td><td>7910-56-00</td><td>&lt;strong&gt;Known in Report As:&lt;/strong&gt; manually operated push-to-connect valves</td></tr><tr><td>Adafruit DHT22 Humidity Sensor (small)</td><td>Digi-Key</td><td>385</td><td>&lt;strong&gt;Known in Report As:&lt;/strong&gt; internal humidity sensor</td></tr><tr><td>Adafruit DHT22 Humidity Sensor (large)</td><td>Digi-Key</td><td></td><td>&lt;strong&gt;Known in Report As:&lt;/strong&gt; external humidity sensor</td></tr><tr><td>Arduino Uno</td><td>Arduino</td><td></td><td></td></tr><tr><td>Glovebox environment</td><td></td><td></td><td></td></tr><tr><td>10 kOhm Resistor</td><td></td><td></td><td></td></tr><tr><td>Oscilla Xtralien Scientific Python IDE</td><td>Oscilla</td><td></td><td>https://www.ossila.com/pages/xtralien-scientific-python&lt;br/&gt; &lt;strong&gt;Known in Report As:&lt;/strong&gt; Python IDE</td></tr></tbody></table>

a 3d-printed chamber for organic optoelectronic device degradation testing

在这篇手稿中, 我们概述了制造一个小型, 便携, 易于使用的大气室的有机和钙钛矿光电器件, 使用 3 d-印刷。由于这些类型的设备对湿气和氧气敏感, 这样的房间可以帮助研究人员在表征电子和稳定的性质。该会议厅的目的是作为一个临时的, 可重用的, 稳定的环境与控制的性质 (包括湿度, 气体介绍, 和温度)。它可用于保护空气敏感材料, 或以控制的方式将其暴露于污染物中以进行降解研究。为了表征室的性质, 我们概述了一个简单的程序, 以确定的水汽传输速率 (WVTR) 使用相对湿度的测量标准湿度传感器。这个标准操作程序, 使用50% 加密密度聚乳酸 (PLA), 导致一个房间, 可以使用几个星期没有任何重大损失的设备属性。该分庭的通用性和易用性使其能够适应任何需要紧凑控制气氛的特征条件。

电流-电压测量:
本会议厅旨在允许对空气敏感二极管装置 (如有机或钙钛矿太阳能电池或发光二极管) 进行测试。它可以作为一种可重用的临时封装, 或者作为引入污染物来执行受控降解测试的方法。这里所示的电流密度-电压 (合资) 曲线是用 ZIF 测试板 (即无光照) 和光照条件来测量的, 以提取基本二极管特性...

Watch this Scientific Journal Video about A 3D-printed Chamber for Organic Optoelectronic Device Degradation Testing at JoVE.com

A 3D-printed Chamber for Organic Optoelectronic Device Degradation Testing

在这里, 我们提出一个设计, 制造和使用一个简单的, 通用的 3 d 印刷和控制大气室的协议, 用于光学和电气特性的空气敏感有机光电器件。

用于有机光电器件降解测试的3维印制腔

In this manuscript, we outline the manufacture of a small, portable, easy-to-use atmospheric chamber for organic and perovskite optoelectronic devices, ...

a-3d-printed-chamber-for-organic-optoelectronic-device-degradation

Research

JoVE Journal

Engineering

7.9K 次观看.  McMaster University. 在这里, 我们提出一个设计, 制造和使用一个简单的, 通用的 3 d 印刷和控制大气室的协议, 用于光学和电气特性的空气敏感有机光电器件。

视频: A 3D-printed Chamber for Organic Optoelectronic Device Degradation Testing

Blue-hazard-free Candlelight OLED

A candlelight-style organic light emitting diode (OLED) is a human-friendly type of lighting because it is blue-hazard-free and has a low correlated color temperature (CCT) illumination. The low CCT lighting is deprived of high-energy blue radiation, and it can be used for a longer duration before causing retinal damage. This work presents the comprehensive protocols for the fabrication of blue-hazard-free candlelight OLEDs. The emission spectrum of the OLED was characterized by the maximum exposure time limit of the retina and the melatonin suppression sensitivity. The devices can be fabricated using dry and wet processes. The dry-processed OLED resulted in a CCT of 1,940 K and exhibited a maximum retinal exposure limit of 1,287 s at a brightness of 500 lx. It showed 2.61% melatonin suppression sensitivity relative to 480 nm blue light. The wet-processed OLED, where the spin coating is used to deposit hole injection, hole transport, and emissive layers, making fabrication fast and economical, produced a CCT of 1,922 K and showed a maximum retinal exposure limit of 7,092 at a brightness of 500 lx. The achieved relative melatonin suppression sensitivity of 1.05% is 86% and 96% less than that of the light emitting diode (LED) and compact fluorescent lamp (CFL), respectively. Wet-processed blue-hazard-free candlelight OLED exhibited a power efficiency of 30 lm/W, which is 2 times that of the incandescent bulb and 300 times that of the candle.

We present a protocol for the fabrication of a blue-hazard-free candlelight organic light emitting diode (OLED) for eye protection and melatonin secretion.

蓝危害自由烛光OLED

A candlelight-style organic light emitting diode (OLED) is a human-friendly type of lighting because it is blue-hazard-free and has a low correlated color ...

科研

工程学

Fabrication and Testing of Photonic Thermometers

In recent years, a push for developing novel silicon photonic devices for telecommunications has generated a vast knowledge base that is now being leveraged for developing sophisticated photonic sensors. Silicon photonic sensors seek to exploit the strong confinement of light in nano-waveguides to transduce changes in physical state to changes in resonance frequency. In the case of thermometry, the thermo-optic coefficient, i.e., changes in refractive index due to temperature, causes the resonant frequency of the photonic device such as a Bragg grating to drift with temperature. We are developing a suite of photonic devices that leverage recent advances in telecom compatible light sources to fabricate cost-effective photonic temperature sensors, which can be deployed in a wide variety of settings ranging from controlled laboratory conditions, to the noisy environment of a factory floor or a residence. In this manuscript, we detail our protocol for the fabrication and testing of photonic thermometers.

We describe the process of fabrication and testing of photonic thermometers.

光子温度计的制作与测试

In recent years, a push for developing novel silicon photonic devices for telecommunications has generated a vast knowledge base that is now being ...

化学

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes

A method for producing simple and efficient thermally-activated delayed fluorescence organic light-emitting diodes (OLEDs) based on guest-host or exciplex donor-acceptor emitters is presented. With a step-by-step procedure, readers will be able to repeat and produce OLED devices based on simple organic emitters. A patterning procedure allowing the creation of personalized indium tin oxide (ITO) shape is shown. This is followed by the evaporation of all layers, encapsulation and characterization of each individual device. The end goal is to present a procedure that will give the opportunity to repeat the information presented in cited publication but also using different compounds and structures in order to prepare efficient OLEDs.

A protocol for the production of simple structured organic light-emitting diodes (OLEDs) is presented.

真空沉积有机发光二极管的生产与表征

A method for producing simple and efficient thermally-activated delayed fluorescence organic light-emitting diodes (OLEDs) based on guest-host or exciplex ...

Luminescence Lifetime Imaging of O2 with a Frequency-Domain-Based Camera System

We describe a method to image dissolved oxygen (O2), in 2D at high spatial (&#60; 50-100 &#181;m) and temporal (&#60; 10 s) resolution. The method employs O2 sensitive luminescent sensor foils (planar optodes) in combination with a specialized camera system for imaging luminescence lifetime in the frequency-domain. Planar optodes are prepared by dissolving the O2-sensitive indicator dye in a polymer and spreading the mixture on a solid support in a defined thickness via knife coating. After evaporation of the solvent, the planar optode is placed in close contact with the sample of interest - here demonstrated with the roots of the aquatic plant Littorella uniflora. The O2 concentration-dependent change in the luminescence lifetime of the indicator dye within the planar optode is imaged via the backside of the transparent carrier foil and aquarium wall using a special camera. This camera measures the luminescence lifetime (&#181;s) via a shift in phase angle between a modulated excitation signal and emission signal. This method is superior to luminescence intensity imaging methods, as the signal is independent of the dye concentration or intensity of the excitation source, and solely relies on the luminescence decay time, which is an intrinsically referenced parameter. Consequently, an additional reference dye or other means of referencing are not needed. We demonstrate the use of the system for macroscopic O2 imaging of plant rhizospheres, but the camera system can also easily be coupled to a microscope.

Luminescence Lifetime Imaging of O2 with a Frequency-Domain-Based Camera System

We describe the use of a novel, frequency-domain luminescence lifetime camera for mapping 2D O2 distributions with optical sensor foils. The camera system and image analysis procedures are described along with the preparation, calibration and application of sensor foils for visualizing the O2 microenvironment in the rhizosphere of aquatic plants.

使用基于频率域的摄像机系统的 O2的发光寿命成像

We describe a method to image dissolved oxygen (O2), in 2D at high spatial (&#60; 50-100 &#181;m) and temporal (&#60; 10 s) resolution. The method employs ...

Microfluidic Fabrication Techniques for High-Pressure Testing of Microscale Supercritical CO2 Foam Transport in Fractured Unconventional Reservoirs

Pressure limitations of many microfluidic platforms have been a significant challenge in microfluidic experimental studies of fractured media. As a result, these platforms have not been fully exploited for direct observation of high-pressure transport in fractures. This work introduces microfluidic platforms that enable direct observation of multiphase flow in devices featuring surrogate permeable media and fractured systems. Such platforms provide a pathway to address important and timely questions such as those related to CO2 capture, utilization and storage. This work provides a detailed description of the fabrication techniques and an experimental setup that may serve to analyze the behavior of supercritical CO2 (scCO2) foam, its structure and stability. Such studies provide important insights regarding enhanced oil recovery processes and the role of hydraulic fractures in resource recovery from unconventional reservoirs. This work presents a comparative study of microfluidic devices developed using two different techniques: photolithography/wet-etching/thermal-bonding versus Selective Laser-induced Etching. Both techniques result in devices that are chemically and physically resistant and tolerant of high pressure and temperature conditions that correspond to subsurface systems of interest. Both techniques provide pathways to high-precision etched microchannels and capable lab-on-chip devices. Photolithography/wet-etching, however, enables fabrication of complex channel networks with complex geometries, which would be a challenging task for laser etching techniques. This work summarizes a step-by-step photolithography, wet-etching and glass thermal-bonding protocol and, presents representative observations of foam transport with relevance to oil recovery from unconventional tight and shale formations. Finally, this work describes the use of a high-resolution monochromatic sensor to observe scCO2 foam behavior where the entirety of the permeable medium is observed simultaneously while preserving the resolution needed to resolve features as small as 10 &#181;m.

Microfluidic Fabrication Techniques for High-Pressure Testing of Microscale Supercritical CO2 Foam Transport in Fractured Unconventional Reservoirs

This paper describes a protocol along with a comparative study of two microfluidic fabrication techniques, namely photolithography/wet-etching/thermal-bonding and Selective Laser-induced Etching (SLE), that are suitable for high-pressure conditions. These techniques constitute enabling platforms for direct observation of fluid flow in surrogate permeable media and fractured systems under reservoir conditions.

破碎非常规储层微尺度超临界CO泡沫运输的高压 试验微流体制造技术

Pressure limitations of many microfluidic platforms have been a significant challenge in microfluidic experimental studies of fractured media. As a ...

Development of Efficient OLEDs from Solution Deposition

The use of highly efficient organic emitters based on the thermally activated delayed fluorescence (TADF) concept is interesting due to their 100% internal quantum efficiency. Presented here is a solution deposition method for the fabrication of efficient organic light-emitting diodes (OLEDs) based on a TADF emitter in a simple device structure. This fast, low-cost, and efficient process can be used for all OLED emissive layers that follow the host-guest concept. The fundamental steps are described along with necessary information for further reproduction. The goal to establish a general protocol that can be easily adapted for principal organic emitters currently under study and development.

Presented here is a protocol for the fabrication of efficient, simple, solution-deposited organic light-emitting diodes with low roll-off.

基于溶液沉积的高效OLED开发

The use of highly efficient organic emitters based on the thermally activated delayed fluorescence (TADF) concept is interesting due to their 100% ...

A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles

Today, wearable electronics devices combine a large variety of functional, stretchable, and flexible technologies. However, in many cases, these devices cannot be worn under everyday conditions. Therefore, textiles are commonly considered the best substrate to accommodate electronic devices in wearable use. In this paper, we describe how to selectively pattern organic electroactive materials on textiles from a solution in an easy and scalable manner. This versatile deposition technique enables the fabrication of wearable organic electronic devices on clothes.

In this paper, we present a protocol to selectively deposit organic materials on textiles, which allows for the direct integration of organic electronic devices with wearables. The fabricated devices can be fully integrated in textiles, respecting their mechanical appearance and enabling sensing capabilities.

关于纺织品有机电子设备的简单和可扩展的制作方法

Today, wearable electronics devices combine a large variety of functional, stretchable, and flexible technologies. However, in many cases, these devices ...

生物工程

Fabrication and Validation of an Organ-on-chip System with Integrated Electrodes to Directly Quantify Transendothelial Electrical Resistance

Organs-on-chips, in vitro models involving the culture of (human) tissues inside microfluidic devices, are rapidly emerging and promise to provide useful research tools for studying human health and disease. To characterize the barrier function of cell layers cultured inside organ-on-chip devices, often transendothelial or transepithelial electrical resistance (TEER) is measured. To this end, electrodes are usually integrated into the chip by micromachining methods to provide more stable measurements than is achieved with manual insertion of electrodes into the inlets of the chip. However, these electrodes frequently hamper visual inspection of the studied cell layer or require expensive cleanroom processes for fabrication. To overcome these limitations, the device described here contains four easily integrated electrodes that are placed and fixed outside of the culture area, making visual inspection possible. Using these four electrodes the resistance of six measurement paths can be quantified, from which the TEER can be directly isolated, independent of the resistance of culture medium-filled microchannels. The blood-brain barrier was replicated in this device and its TEER was monitored to show the device applicability. This chip, the integrated electrodes and the TEER determination method are generally applicable in organs-on-chips, both to mimic other organs or to be incorporated into existing organ-on-chip systems.

This publication describes the fabrication of an organ-on-chip device with integrated electrodes for direct quantification of transendothelial electrical resistance (TEER). For validation, the blood-brain barrier was mimicked inside this microfluidic device and its barrier function was monitored. The presented methods for electrode integration and direct TEER quantification are generally applicable.

用集成电极直接量化 Transendothelial 电阻的 Organ-on-chip 系统的制作与验证

Organs-on-chips, in vitro models involving the culture of (human) tissues inside microfluidic devices, are rapidly emerging and promise to provide useful ...

Scalable Fabrication of Stretchable, Dual Channel, Microfluidic Organ Chips

A significant number of lead compounds fail in the pharmaceutical pipeline because animal studies often fail to predict clinical responses in human patients. Human Organ-on-a-Chip (Organ Chip) microfluidic cell culture devices, which provide an experimental in vitro platform to assess efficacy, toxicity, and pharmacokinetic (PK) profiles in humans, may be better predictors of therapeutic efficacy and safety in the clinic compared to animal studies. These devices may be used to model the function of virtually any organ type and can be fluidically linked through common endothelium-lined microchannels to perform in vitro studies on human organ-level and whole body-level physiology without having to conduct experiments on people. These Organ Chips consist of two perfused microfluidic channels separated by a permeable elastomeric membrane with organ-specific parenchymal cells on one side and microvascular endothelium on the other, which can be cyclically stretched to provide organ-specific mechanical cues (e.g., breathing motions in lung). This protocol details the fabrication of flexible, dual channel, Organ Chips through casting of parts using 3D printed molds, enabling combination of multiple casting and post-processing steps. Porous poly (dimethyl siloxane) (PDMS) membranes are cast with micrometer sized through-holes using silicon pillar arrays under compression. Fabrication and assembly of Organ Chips involves equipment and steps that can be implemented outside of a traditional cleanroom. This protocol provides researchers with access to Organ Chip technology for in vitro organ- and body-level studies in drug discovery, safety and efficacy testing, as well as mechanistic studies of fundamental biological processes.

Here, we present a protocol that describes the fabrication of stretchable, dual channel, organ chip microfluidic cell culture devices for recapitulating organ-level functionality in vitro.

可伸缩、双通道、微流控芯片制造

A significant number of lead compounds fail in the pharmaceutical pipeline because animal studies often fail to predict clinical responses in human ...

A Lab-On-A-Chip Platform for Stimulating Osteocyte Mechanotransduction and Analyzing Functional Outcomes of Bone Remodeling

Bone remodeling is a tightly regulated process that is required for skeletal growth and repair as well as adapting to changes in the mechanical environment. During this process, mechanosensitive osteocytes regulate the opposing responses between the catabolic osteoclasts and anabolic osteoblasts. To better understand the highly intricate signaling pathways that regulate this process, our lab has developed a foundationary lab-on-a-chip (LOC) platform for analyzing functional outcomes (formation and resorption) of bone remodeling within a small scale system. As bone remodeling is a lengthy process that occurs on the order of weeks to months, we developed long-term cell culturing protocols within the system. Osteoblasts and osteoclasts were grown on functional activity substrates within the LOC and maintained for up to seven weeks. Afterward, chips were disassembled to allow for the quantification of bone formation and resorption. Additionally, we have designed a 3D printed mechanical loading device that pairs with the LOC platform and can be used to induce osteocyte mechanotransduction by deforming the cellular matrix. We have optimized cell culturing protocols for osteocytes, osteoblasts, and osteoclasts within the LOC platform and have addressed concerns of sterility and cytotoxicity. Here, we present the protocols for fabricating and sterilizing the LOC, seeding cells on functional substrates, inducing mechanical load, and disassembling the LOC to quantify endpoint results. We believe that these techniques lay the groundwork for developing a true organ-on-a-chip for bone remodeling.

Here, we present protocols for analyzing bone remodeling within a lab-on-a-chip platform. A 3D printed mechanical loading device can be paired with the platform to induce osteocyte mechanostransduction by deforming the cellular matrix. The platform can also be used to quantify bone remodeling functional outcomes from osteoclasts and osteoblasts (resorption/formation).

用于有机光电器件降解测试的3维印制腔

摘要

探索更多视频

此视频中的章节

蓝危害自由烛光OLED

光子温度计的制作与测试

真空沉积有机发光二极管的生产与表征

使用基于频率域的摄像机系统的 O₂的发光寿命成像

破碎非常规储层微尺度超临界CO泡沫运输的_高压试验微流体制造技术

基于溶液沉积的高效OLED开发

关于纺织品有机电子设备的简单和可扩展的制作方法

用集成电极直接量化 Transendothelial 电阻的 Organ-on-chip 系统的制作与验证

可伸缩、双通道、微流控芯片制造

用于刺激骨质复变和分析骨骼重塑功能结果的实验室A芯片平台

用于有机光电器件降解测试的3维印制腔

摘要

探索更多视频

此视频中的章节

蓝危害自由烛光OLED

光子温度计的制作与测试

真空沉积有机发光二极管的生产与表征

使用基于频率域的摄像机系统的 O2的发光寿命成像

破碎非常规储层微尺度超临界CO泡沫运输的高压 试验微流体制造技术

基于溶液沉积的高效OLED开发

关于纺织品有机电子设备的简单和可扩展的制作方法

用集成电极直接量化 Transendothelial 电阻的 Organ-on-chip 系统的制作与验证

可伸缩、双通道、微流控芯片制造

用于刺激骨质复变和分析骨骼重塑功能结果的实验室A芯片平台

使用基于频率域的摄像机系统的 O₂的发光寿命成像

破碎非常规储层微尺度超临界CO泡沫运输的_高压试验微流体制造技术