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

저자 피터 Jonosson 언스 새로운 미디어 센터는 챔버의 3D 프린팅에 대 한 인정합니다. 이 연구는 RGPIN 436100-2013, ER15-11-123, McMaster 학장의 엔지니어링 우수성 학부 여름 연구 수상, 그리고 대학생 연구 기회 프로그램에 의해 지원 되었다.

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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. 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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>

저자는 공개 없다.

균열, 간격, 또는 KF50 클램프를 강화 하 여 수 분 및 산소의 모든 진입을 방지 하기 위해 챔버 씰링 WVTR을 줄일 수는 가난한에 채우기 특성을 피하기 위해 챔버의 인쇄를 포함 하는 재현이 실험에서 중요 한 단계 새, 그리고 샘플 및 적절 한 링 배치를 사용 하 여 최고 약 실 사이 물개를 만드는 방지 하려면 연락처 핀 또는 어떤 피드스루 진공 별 저압 에폭시를 사용 하 여 위쪽 및 아래쪽 챔버 사이 ?...

유기 및 페로 광전자 장치, 태양 전지 및 발광 다이오드 반도체 유기 분자를 π 활용 및 organometal 할로겐 기반 연구의 급속 하 게 성장 하는 분야는. 유기 발광 다이오드 (Oled) 조명에서 주요 기술 요소는 이미1, 표시 및 유기 태양 전지는 비정 질 실리콘2와 경쟁 수 있도록 효율성을 달성 하기 시작 했습니다. 페로-기반 장치 빛 흡수 및 발광 응용 프로그램3,,45 의 최근 급속 한 발전 제안 저가, 쉽게 처리 장치는 곧 널리 찾을 가능성이 배포입니다. 그러나, 이러한 모든 기술은 대기 오염 물질, 특히 습기와 산소, 그들의 효과적인 일생6,7,,89를 제한 하는 감도에서 고통.
이러한 시스템을 공부 하는 연구원에 대 한 적응력, 쉬운--사용, 휴대용, 그리고 재사용 가능한 챔버 등 민감한 자료를 보호 하기 위해 또는 제어 방식으로10,11에 오염 물질에 노출에 유용할 수 있습니다. 그것은 공기에 민감한 소자의 특성에 대 한 한 글러브를 사용 하 여, 비록이 크고, 비싼, 그리고 고정 위치, 불활성 환경 필요할 수 있는 특성의 넓은 범위와 호환 수 있습니다. 제공 하는 휴대용 대안, 리스 외. 10 작은 금속 챔버 유기 소자의 전기 및 광학 특성에 대 한 적당 한 표준 진공 플랜지에 따라 제안. 우리가 만드는 그것은 저렴 하 고 더 다양 한 사용 하 여 챔버 부품 생산을 3 차원 인쇄가이 디자인을 적응 했습니다. 3D 인쇄 보다는 가공, 사용 유틸리티의 기본 디자인을 유지 하면서 샘플 또는 환경 요구 사항 변화에 신속 하 고 비용 효율적인 조정에 대 한 수 있습니다. 이 기여에 우리 같은 챔버, 확인 하는 절차를 설명 하 고 유기 다이오드 소자의 전류-전압 특성을 추출 하는 데 사용할.
유기의 좋은 캡슐 페로 장치 10-3 -10-6 g/m2의 WVTRs 있어야/장기 장치 안정성12,13, 유기 소자에 작은 물 진입을 보장 하기 위한 일에 매우 가혹한 조건입니다. 이 챔버 테스트 목적 보다는 장기 저장 또는 캡슐화 방법 제어 환경 설계, 효과적인 챔버에 대 한 요구는으로 엄격 합니다. 챔버는 특성 실험을 수행 하는 합리적인 시간 내에서 장치 속성을 유지할 수 있어야 합니다. 몇 일 동안 또는 사용 될 수 있는 챔버에 PLA를 사용 하 여 표준 운영 절차 결과 주 장치 속성의 뜻깊은 손실 없이 통합 된 가스 흐름.
자료를 변경 또는 심지어 모양과 크기 챔버 바디의 챔버로 공기에서 오염 물질의 침투에 큰 영향을 미칠 수 있습니다. 따라서, 습기와 산소의 진입 챔버의 효능을 결정 하기 위해 각 디자인에 대 한 신중 하 게 모니터링 해야 합니다. 우리, 또한 챔버의 제작 개요 실험 챔버의 사용에 대 한 기간을 설정 하는 상용 습도 센서를 사용 하는 챔버의 WVTR을 결정 하기 위한 간단한 절차.
간단 하면서도 다양 한 챔버 실험의 여러 유형에 대 한 수행할 수 있습니다. 그들은 불활성 분위기 글러브, 전기 및 광학 characterizations 전기 피드스루 포트 및 창에 대 한 적당 한 외부 환경으로 작동할 수 있다. 그들의 이동성 수 라운드 로빈 신뢰성14 에 대 한 테스트에 유용 어디 그들은 제조 되었다, 실험실 외부 표준 전기 특성화 장비와 함께 사용할 수 또는 장치의 인증된 측정을 얻기 위해 성능15. 이 약 실은 간단한 수정 제어 저하 테스트에 대 한 오염 물질의 도입의 효과 연구 하는 데 특히 유용도 있습니다. 3D 인쇄를 사용 하 여 장치 레이아웃, 크기, 변경 또는 테스트 요구 사항에 중요 한, 빠른 적응성을 수 있습니다.

<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

이 원고에서 우리는 작은, 휴대용, 쉬운--사용 대기 챔버의 제조 개요 유기 및 페로 광전자 장치, 3D 인쇄를 사용 하 여. 이러한 유형의 장치는 습기와 산소, 같은 챔버 도움이 연구원 전자 및 안정성 속성 특성화 됩니다. 챔버는 제어 속성 (를 포함 하 여 온도 습도, 가스 도입)와 임시, 재사용할 수 있는, 그리고 안정적인 환경으로 사용할 것입니다. 그것은 공기에 민감한 자료를 보호 하기 위해 또는 저하 연구에 대 한 제어 방법으로 그들을 오염 물질에 노출에 사용할 수 있습니다. 챔버의 속성의 특성, 우리는 표준 습도 센서에 의해 측정 된 상대 습도 사용 하 여 수증기 전송 속도 (WVTR)를 결정 하는 간단한 절차를 개설 한다. Polylactic 산 (PLA)의 50 %infill 밀도 사용 하 여 표준 운영 절차, 주 장치 속성의 뜻깊은 손실 없이 사용할 수 있는 챔버에 발생 합니다. 다양성 및 챔버의 사용의 용이성 컴팩트 제어 분위기를 필요로 하는 어떤 특성 상태에 적용할 수 있습니다.

전류-전압 측정:
이 챔버는 공기에 민감한 다이오드 장치는 유기 또는 페로 태양 전지 또는 빛 발광 다이오드 등의 테스트에 대 한 수 있도록 설계 되었습니다. 그것은 재사용, 임시 캡슐화 또는 제어 저하 테스트 수행에 오염 물질을 도입 하는 방법으로 작동할 수 있습니다. 여기에 표시 된 전류 밀도-전압 (JV) 곡선...

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

여기, 우리는 디자인, 제조, 및 공기에 민감한 유기 광전자 소자의 광학 및 전기 특성에 대 한 간단 하 고, 다양 한 3D 인쇄 및 제어 대기 챔버의 사용에 대 한 프로토콜을 제시.

유기 광전자 소자에 대 한 3D 인쇄 챔버 저하 테스트

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 조회수.  McMaster University. 여기, 우리는 디자인, 제조, 및 공기에 민감한 유기 광전자 소자의 광학 및 전기 특성에 대 한 간단 하 고, 다양 한 3D 인쇄 및 제어 대기 챔버의 사용에 대 한 프로토콜을 제시.

비디오: 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.

블루 위험이없는 촛불의 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 ...

연구

공학

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.

제조 및 광 온도계의 테스트

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

화학

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.

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.

주파수 도메인 기반 카메라 시스템을 갖춘 O2의 발광 평생 이미징

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.

골절된 비전통적인 저수지에서 마이크로스케일 초임계 CO2 폼 수송의 고압 테스트를 위한 미세 유체 제조 기술

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.

용액 증착을 통한 효율적인 OLED 개발

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.

섬유에 유기 전자 장치를위한 간편하고 확장 가능한 제조 방법

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

생체공학

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.

제조 및 통합된 전극 Transendothelial 전기 저항을 직접 측정 하는 기관-온-칩 시스템의 유효성 검사

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.

Stretchable, 듀얼 채널, 미세 기관 칩의 확장 가능한 제작

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).

유기 광전자 소자에 대 한 3D 인쇄 챔버 저하 테스트

요약

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