The authors would like to acknowledge the BPI PIAVE AUTONOTEX grant for the financial support.

Tekstil 1. Desenlendirme İletken Polimerler <ol><li> işlem sırasında kolay kullanım için bir düzlemsel bir yüzeyi üzerinde bir 10 cm x 10 cm tabaka halindeki tekstil düzeltildi. Tekstil, 300 mikron kalınlığında ve% 50 bir örgü yönü streç yeteneği kadar olan% 100 interlok örme polyester kumaş kullanın. </li><li> desenlendirme tasarımını içeren bir maske yapmak için, bir 125 mikron kalınlığında Polyimide film kullanın; modelinin bir örneği Şekil 1 &#39;de gösterilmiştir. <ol><li> Desen poliimid maskesi 10 bir lazer kesici (örneğin, Protolaser S LPKF) kullanın; bir elektrot modeli tasarımı, Şekil 1 &#39;de gösterilmiştir. </li><li> Coat PDMS formülasyonu (10: 1 baz ajan oranı kür için) 200 um ve bir de ıslak film kalınlığı ile otomatik şerit döküm aracını (K kontrol baskı kaplayıcı, doktor bıçağı) ile maske (Polyimide film) üstünde 6 m / dakika kaplama hızı. 3 cm x 5 cm&#39;lik bir maske için yaklaşık 0.5 mL kullanın. th gerçekleştirmekdavlumbaz altında süreçtir. </li></ol></li><li> Yavaşça PDMS kaplı maskeye kumaş aktarın. PDMS tam tekstil yapısı içinde absorbe edilmelidir sonra 10 dakika boyunca bırakın. </li><li> 10 dakika boyunca 100 ° C&#39;de bir hava fırınında örnek Cure. </li><li> iletken polimerin hazırlanması: PEDOT: PSS dispersiyonu (80 mL), etilen glikol (20 mi), 4-dodesilbenzensülfonik asit (40 uL) ve bir davlumbaz 3-metakriloksipropiltrimetoksisilan (1 mL) eklenmiştir. </li><li> Fırça kat PEDOT: çözelti homojen nüfuz kadar tekstil PDMS içermeyen alanda PSS bir solüsyon elde edilir. düzgün bir desen renk elde etmek için bu adımı tekrarlayın. 1 mL / cm 2 uygulanır. </li><li> PSS çözeltisi: PEDOT kuru, 1 saat boyunca 110 ° C de kumaş Cure. naylon gibi, yüksek sıcaklık tedaviye hassas olan tekstil 60 ° C&#39;ye düşürülür. </li></ol> 2. Organik Cihaz İmalatı NOT: Bölüm 1 describ protokoltekstil malzemeleri iletken seçici birikimi es. Aşağıdaki bölümlerde streç sensörleri, OECT transistörler, deri elektrotlar ve kapasitif sensörler gibi, organik cihazları imal etmek gerekli ek adımları anlatacağız. <ol><li> Bölüm 1 &#39;de tarif edildiği gibi, tekstil Şekil 3a&#39;da gösterilen streç sensörleri, desen elektrot hatları imal etmek için, 1.1-1.5 yineleyin. Not: desen bir örneği Şekil 3a&#39;da gösterilmektedir. Bu tür sensörler imalat ek işlem gerekli değildir. </li><li> Şekil 3b gösterilen transistör tasarımını imal etmek, desen Bölüm 1&#39;de açıklanan adımları izleyerek bir naylon dokuma şerit üzerinde transistör dizileri Biraz PDMS tavlama ve Pedot değiştirin: PSS 60 ° C&#39;de kür ile naylon termal bozulmasını önlemek için adımlar kür daha uzun bir süre bekletilmiştir. </li><li> Şekil 3C&#39;de gösterildiği kutanöz elektrot üretimi, için, bir yatırmaPSS tekstil: desenli Pedot üzerine iyonik jeli. <ol><li> bir iyonik sıvı jel karışımı, iyonik sıvı içeren, 1-etil-3-metil-imidazolyum-etil sülfat hazırlanması; Çapraz bağlama maddesi, poli (etilen glikol) diakrilat; sırasıyla 0.6 / 0.35 / 0.05, bir (h / h) oranında bir ışık başlatan, 2-hidroksi-2-methylpropiophenone. </li><li> Kat PEDOT: iyonik sıvı (20 uL / cm2) PSS elektrodu ve bırak döküm adım 2.3.1 (25 uL / cm2) den iyonik sıvı jel karışımı ekleyin. </li><li> Jel katılaşır kadar, 10-15 dakika süreyle çapraz reaksiyonu başlatmak için UV ışık (365 nm) maruz. Davlumbaz bu adımı gerçekleştirin. UV ışınlarına maruz sırasında UV koruyucu kafes kullanın. </li></ol></li><li> Kapasitif sensör imalatı için PEDOT kullanımı: bir izolasyon malzemesi (Şekil 3D) ile izole PSS tekstil elektrotlar. <ol><li> Klavye gibi Pedot izole: PDMS kullanarak PSS elektrotlar; Klavye tasarımı Şekil 2b &lt;görülebileceği/ Strong&gt;. Kumaşın üstünde PDMS formülasyonu dağıtmak ve bir çekçek ile fazla kaldırmak. </li><li> 10 dakika boyunca 100 ° C&#39;de bir fırında kumaş yerleştirin. Davlumbaz bu adımı gerçekleştirin. </li></ol></li></ol>

<ol>
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The authors have nothing to disclose.

iletken malzemelerin desenlendirme fonksiyonel elektronik cihazların üretiminde ilk adımlardan biridir. fabrikasyon süreci dikkate tür malzemelerin kimyasal ve fiziksel özelliklerini almak gerekiyor ve işlem akışı imalat basamakları arasındaki maddi çapraz uyumluluk düşünmeye ihtiyacı gibi bu, zorlu olabilir. Organik elektronik cihazların mikroimalat, bu iki açıdan bağlı organik maddelerin yüksek reaktif doğaya daha önemlidir. Bugün ise, organik maddeler kendi elektro-elastik özellikleri <sup ...

Giyilebilir elektronik alanında üç kez cari piyasa üzerinde, 2025 50 milyar avro değerinde olması beklenen bir hızla büyüyen bir pazar. Geçerli giyilebilir cihazlar önündeki en büyük engel müdahaleci katı elektronik ekleri giyilebilir sistemlerde kurulan cihazların kullanımını sınırlamak olmasıdır. Zaten günlük yaşamda mevcut kumaşları kullanılarak bu sınırlama önlemek için çok cazip ve anlaşılır bir yaklaşımdır. Nedeniyle elastik yeteneği, biz giymek giysi bazı kısımları deri ile sıkı temas halinde doğal olarak bulunmaktadır. Piyasada bugün mevcut akıllı giysiler pek çok örnek bir moda şekilde 1 insanlarla elektronik bağlayan ince, plastik ekranlar, klavyeler ve tekstil gömülü ışık kaynağı cihazlar dayanmaktadır. spor Uygulamada, sağlık izleme yaygın yapıştırıcı elektrotları ve metal bilekliği kullanılan rahat alternatifler sunan tekstil elektrotlar, dayanır. Burada, iletken elyaflardoğrudan cilt tahrişine ve genişletilmiş aşınma sırasında diğer rahatsızlıkları önlemek için esnek kumaşlar ile entegre. Ayrıca, tekstil ter 4 bir analitin tespiti yoluyla biyosensörler entegre etmek kesinlikle işlevsel robot aktüatörler 3 gelişmesi için kesme sensörleri entegre, ve, hareket 2 yakalamak için eğrilik sensörleri entegre birçok fırsat sunuyoruz. Modern giyilebilir teknoloji benzersiz özelliklere sahip elektronik cihazlar teslim karbon bazlı yarı iletken malzemeler dayanır. organik &quot;yumuşak&quot; doğa geleneksel katı-hal elektronik kıyasla insan vücudu ile arabirim için daha iyi mekanik özellikler gösterir. mekanik esnek yüzeyler ile eşleştirilmiş Bu mekanik uyumluluk, tekstil gibi cihazlarda düzlemsel olmayan form faktörleri kullanımını sağlar. Organik maddelerin kullanımı nedeniyle karışık Elektronik endüstri için de yaşam bilimleri alakalıctronic ve iyonik iletkenliği 5. Ayrıca, organik yarı iletken ve optoelektronik malzemelerin ekran, transistör, mantık ve güç yetenekleri 6, 7, 8, 9 ile fonksiyonel cihazların büyük bir çeşitlilik güçlendirmek. Bu tür organik cihazların üretiminde ana zorluk tekstil düzlemsel olmayan yüzeyler üzerinde fonksiyonel maddelerin kontrollü birikmesidir. Klasik imalat teknikleri başta tekstil yüzeylerde yapısal boyutluluk ile çöktürme işleminin uyumsuzluk ile sınırlıdır. Burada, yapılandırılmış tekstil iletken polimerlerin selektif birikimi sağlayan basit ve ölçeklenebilir üretim protokol açıklar. sunulan işlem giyilebilir ve konformal elektronik cihazların imalatı sağlar. yaklaşım c desenlendirme dayanmaktadırticari olarak elde edilebilir iletken polimer poli (3,4-etilendioksitiyofen): poli (stiren sülfonat) (PEDOT: PSS) ve tekstil üzerinde elastomerik şablon malzemesi polidimetilsiloksan (PDMS). yanı sıra tekstil yumuşak ve gerilebilir özelliklerin korunması için, PSS solüsyonu: Bu kombinasyon verimli sulu Pedot sınırlandırılması için izin verir. Bu basit ve güvenilir bir üretim yöntemi doğrudan maliyet-etkin ve endüstriyel ölçeklenebilir şekilde tekstil, elektronik cihazlar çeşitli imalatı için önünü açıyor.

<table><tbody><tr><td>SYLGARD 184, Silicone elastomer kit (Base and Curing agent)</td><td>Dow Corning</td><td></td><td>PDMS elastomer</td></tr><tr><td colspan="4">&lt;strong&gt;The conducting polymer formulation&lt;/strong&gt;</td></tr><tr><td>CleviosTM PH 1000 PEDOT:PSS</td><td>Heraeus</td><td></td><td>Conductive polymer</td></tr><tr><td>Ethylene glycol</td><td>Sigma-Aldrich</td><td>03750-250ML</td><td>Solvent (EG), CAS: 107-21-1</td></tr><tr><td>3-methacryloxypropyltrimethoxysilane</td><td>Sigma-Aldrich</td><td>M6514</td><td>Cros linker (GOPs), CAS: 2530-85-0</td></tr><tr><td>4-dodecylbenzenesulfonic acid</td><td>Sigma-Aldrich</td><td>44198</td><td>DBSA; CAS: 121-65-3</td></tr><tr><td colspan="4">&lt;strong&gt;The ionic liquid gel&lt;/strong&gt;</td></tr><tr><td>UV lamp DFE 2340</td><td>C.I.F/ ATHELEC</td><td>DP134</td><td>UV-365 nm</td></tr><tr><td>1-Ethyl-3-methylimidazolium ethyl sulfate</td><td>Sigma-Aldrich</td><td>51682-100G-F</td><td>Ionic Liquid (IL), CAS: 342573-75-5</td></tr><tr><td>Poly(ethylene glycol) diacrylate</td><td>Sigma-Aldrich</td><td>455008-100ML</td><td>Mn 700, CAS: 26570-48-9</td></tr><tr><td>2-Hydroxy-2-methylpropiophenon</td><td>Sigma-Aldrich</td><td>405655-50ML</td><td>Phot Initiator (PI), CAS: 7473-98-5</td></tr><tr><td>The textile fabric</td><td>VWR</td><td>Spec-Wipe 7 Wipers</td><td>100% interlock knit polyester fabric</td></tr><tr><td>The polyimide film</td><td>DuPont</td><td>HN100</td><td>Polyimide film with 125 &amp;micro;m thickness</td></tr></tbody></table>

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.

Tekstil renkleri ve desenleri uygulamak için geleneksel yöntemler boyaların seçici birikimi sağlamak için çıkarılabilir maskeleme katmanları güveniyor. Tekstil PSS elektrotlar: Şekil 1, biz Pedot desenlendirme böyle bir yaklaşımın adaptasyonunu göstermektedir. PSS çözümü: bir maskeleme katmanı olarak, biz sulu Pedot olmayan kontrol difüzyon dizginlemek hidrofobik polidimetilsiloksan kullandı. Ayrıca, yumuşaklık ve örme ve dokuma tekstil gerile...

Watch this Scientific Journal Video about A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles at JoVE.com

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

Bu yazıda, seçici giyilebilir organik elektronik cihazların doğrudan entegrasyon sağlar tekstil organik malzemeler, mevduat bir protokol mevcut. fabrikasyon cihazlar tamamen mekanik bir görünüme saygı ve algılama yetenekleri sağlayan, tekstil entegre edilebilir.

Tekstil Organik Elektronik Cihazlar Basit ve Ölçeklenebilir Fabrikasyon Yöntemi

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

a-simple-scalable-fabrication-method-for-organic-electronic-devices

Research

JoVE Journal

Bioengineering

10.3K Görüntüleme.  Ecole Nationale Supérieure des Mines de Saint-Étienne, CMP-EMSE, MOC.  Bu yazıda, seçici giyilebilir organik elektronik cihazların doğrudan entegrasyon sağlar tekstil organik malzemeler, mevduat bir protokol mevcut. fabrikasyon cihazlar tamamen mekanik bir görünüme saygı ve algılama yetenekleri sağlayan, tekstil entegre edilebilir. 

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

Printing Fabrication of Bulk Heterojunction Solar Cells and In Situ Morphology Characterization

Polymer-based materials hold promise as low-cost, flexible efficient photovoltaic devices. Most laboratory efforts to achieve high performance devices have used devices prepared by spin coating, a process that is not amenable to large-scale fabrication. This mismatch in device fabrication makes it difficult to translate quantitative results obtained in the laboratory to the commercial level, making optimization difficult. Using a mini-slot die coater, this mismatch can be resolved by translating the commercial process to the laboratory and characterizing the structure formation in the active layer of the device in real time and in situ as films are coated onto a substrate. The evolution of the morphology was characterized under different conditions, allowing us to propose a mechanism by which the structures form and grow. This mini-slot die coater offers a simple, convenient, material efficient route by which the morphology in the active layer can be optimized under industrially relevant conditions. The goal of this protocol is to show experimental details of how a solar cell device is fabricated using a mini-slot die coater and technical details of running in situ structure characterization using the mini-slot die coater.

Printing Fabrication of Bulk Heterojunction Solar Cells and In Situ Morphology Characterization

Here, we present a protocol to fabricate organic thin film solar cells using a mini-slot die coater and related in-line structure characterizations using synchrotron scattering techniques.

Toplu Heterojonksiyonlar Solar Hücre Baskı İmalatı ve<em&gt; In Situ</em&gt; Morfoloji Karakterizasyonu

Polymer-based materials hold promise as low-cost, flexible efficient photovoltaic devices. Most laboratory efforts to achieve high performance devices ...

Mühendislik

Fabrication of Fully Solution Processed Inorganic Nanocrystal Photovoltaic Devices

We demonstrate a method for the preparation of fully solution processed inorganic solar cells from a spin and spray coating deposition of nanocrystal inks. For the photoactive absorber layer, colloidal CdTe and CdSe nanocrystals (3-5 nm) are synthesized using an inert hot injection technique and cleaned with precipitations to remove excess starting reagents. Similarly, gold nanocrystals (3-5 nm) are synthesized under ambient conditions and dissolved in organic solvents. In addition, precursor solutions for transparent conductive indium tin oxide (ITO) films are prepared from solutions of indium and tin salts paired with a reactive oxidizer. Layer-by-layer, these solutions are deposited onto a glass substrate following annealing (200-400 &#176;C) to build the nanocrystal solar cell (glass/ITO/CdSe/CdTe/Au). Pre-annealing ligand exchange is required for CdSe and CdTe nanocrystals where films are dipped in NH4Cl:methanol to replace long-chain native ligands with small inorganic Cl- anions. NH4Cl(s) was found to act as a catalyst for the sintering reaction (as a non-toxic alternative to the conventional CdCl2(s) treatment) leading to grain growth (136&#177;39 nm) during heating. The thickness and roughness of the prepared films are characterized with SEM and optical profilometry. FTIR is used to determine the degree of ligand exchange prior to sintering, and XRD is used to verify the crystallinity and phase of each material. UV/Vis spectra show high visible light transmission through the ITO layer and a red shift in the absorbance of the cadmium chalcogenide nanocrystals after thermal annealing. Current-voltage curves of completed devices are measured under simulated one sun illumination. Small differences in deposition techniques and reagents employed during ligand exchange have been shown to have a profound influence on the device properties. Here, we examine the effects of chemical (sintering and ligand exchange agents) and physical treatments (solution concentration, spray-pressure, annealing time and annealing temperature) on photovoltaic device performance.

This protocol describes the synthesis and solution deposition of inorganic nanocrystals layer by layer to produce thin film electronics on non-conductive surfaces. Solvent-stabilized inks can produce complete photovoltaic devices on glass substrates via spin and spray coating following post-deposition ligand exchange and sintering.

Tam Çözüm İşlenmiş İnorganik nanokristal Fotovoltaik Cihazlarının İmalatı

We demonstrate a method for the preparation of fully solution processed inorganic solar cells from a spin and spray coating deposition of nanocrystal ...

Scalable Solution-processed Fabrication Strategy for High-performance, Flexible, Transparent Electrodes with Embedded Metal Mesh

Here, the authors report the embedded metal-mesh transparent electrode (EMTE), a new transparent electrode (TE) with a metal mesh completely embedded in a polymer film. This paper also presents a low-cost, vacuum-free fabrication method for this novel TE; the approach combines lithography, electroplating, and imprint transfer (LEIT) processing. The embedded nature of the EMTEs offers many advantages, such as high surface smoothness, which is essential for organic electronic device production; superior mechanical stability during bending; favorable resistance to chemicals and moisture; and strong adhesion with plastic film. LEIT fabrication features an electroplating process for vacuum-free metal deposition and is favorable for industrial mass production. Furthermore, LEIT allows for the fabrication of metal mesh with a high aspect ratio (i.e., thickness to linewidth), significantly enhancing its electrical conductance without adversely losing optical transmittance. We demonstrate several prototypes of flexible EMTEs, with sheet resistances lower than 1 &#937;/sq and transmittances greater than 90%, resulting in very high figures of merit (FoM) &#8211; up to 1.5 x 104 &#8211; which are amongst the best values in the published literature.

This protocol describes a solution-based fabrication strategy for high-performance, flexible, transparent electrodes with fully-embedded, thick metal mesh. Flexible transparent electrodes fabricated by this process demonstrate among the highest reported performances, including ultra-low sheet resistance, high optical transmittance, mechanical stability under bending, strong substrate adhesion, surface smoothness, and environmental stability.

Gömülü Metal Örgülü Yüksek Performanslı, Esnek, Şeffaf Elektrotlar için Ölçeklenebilir Çözeltiyle İşlenmiş Üretim Stratejisi

Here, the authors report the embedded metal-mesh transparent electrode (EMTE), a new transparent electrode (TE) with a metal mesh completely embedded in a ...

Reactive Vapor Deposition of Conjugated Polymer Films on Arbitrary Substrates

We demonstrate a method of conformally coating conjugated polymers on arbitrary substrates using a custom-designed, low-pressure reaction chamber. Conductive polymers, poly(3,4-ethylenedioxythiophene) (PEDOT) and poly(3,4-propylenedioxythiophene) (PProDOT), and a semiconducting polymer, poly(thieno[3,2-b]thiophene) (PTT), were deposited on unconventional highly-disordered and textured substrates with high surface areas, such as paper, towels and fabrics. This reported deposition chamber is an improvement of previous vapor reactors because our system can accommodate both volatile and nonvolatile monomers, such as 3,4-propylenedioxythiophene and thieno[3,2-b]thiophene. Utilization of both solid and liquid oxidants are also demonstrated. One limitation of this method is that it lacks sophisticated in situ thickness monitors. Polymer coatings made by the commonly used solution-based coating methods, such as spin-coating and surface grafting, are often not uniform or susceptible to mechanical degradation. This reported vapor phase deposition method overcomes those drawbacks and is a strong alternative to common solution-based coating methods. Notably, polymer films coated by the reported method are uniform and conformal on rough surfaces, even at a micrometer scale. This feature allows for future application of vapor deposited polymers in electronics devices on flexible and highly textured substrates.

This paper presents a protocol for reactive vapor deposition of poly(3,4-ethylenedioxythiophene), poly(3,4-propylenedioxythiophene), and poly(thieno[3,2-b]thiophene) films on glass slides and rough substrates, such as textiles and paper.

Reaktif Buhar biriktirme rasgele yüzeylerde konjuge polimer filmleri

We demonstrate a method of conformally coating conjugated polymers on arbitrary substrates using a custom-designed, low-pressure reaction chamber. ...

Kimya

Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors

Flexible photodetectors have been intensely studied for the use of curved image sensors, which are a crucial component in bio-inspired imaging systems, but several challenging points remain, such as a low absorption efficiency due to a thin active layer and low flexibility. We present an advanced method to fabricate a flexible phototransistor array with an improved electrical performance. The outstanding electrical performance is driven by a low dark current owing to deep impurity doping. Stretchable and flexible metal interconnectors simultaneously offer electrical and mechanical stabilities in a highly deformed state. The protocol explicitly describes the fabrication process of the phototransistor using a thin silicon membrane. By measuring I-V characteristics of the completed device in deformed states, we demonstrate that this approach improves the mechanical and electrical stabilities of the phototransistor array. We expect that this approach to a flexible phototransistor can be widely used for the applications of not only next-generation imaging systems/optoelectronics but also wearable devices such as tactile/pressure/temperature sensors and health monitors.

We present a detailed method to fabricate a deformable lateral NIPIN phototransistor array for curved image sensors. The phototransistor array with an open mesh form, which is composed of thin silicon islands and stretchable metal interconnectors, provides flexibility and stretchability. The parameter analyzer characterizes the electrical property of the fabricated phototransistor.

Esnek görüntü sensörü imalatı Lateral NIPIN Phototransistors dayalı.

Flexible photodetectors have been intensely studied for the use of curved image sensors, which are a crucial component in bio-inspired imaging systems, ...

Fabrication and Characterization of a Conformal Skin-like Electronic System for Quantitative, Cutaneous Wound Management

Recent advances in the development of electronic technologies and biomedical devices offer opportunities for non-invasive, quantitative assessment of cutaneous wound healing on the skin. Existing methods, however, still rely on visual inspections through various microscopic tools and devices that normally include high-cost, sophisticated systems and require well trained personnel for operation and data analysis. Here, we describe methods and protocols to fabricate a conformal, skin-like electronics system that enables conformal lamination to the skin surface near the wound tissues, which provides recording of high fidelity electrical signals such as skin temperature and thermal conductivity. The methods of device fabrication provide details of step-by-step preparation of the microelectronic system that is completely enclosed with elastomeric silicone materials to offer electrical isolation. The experimental study presents multifunctional, biocompatible, waterproof, reusable, and flexible/stretchable characteristics of the device for clinical applications. Protocols of clinical testing provide an overview and sequential process of cleaning, testing setup, system operation, and data acquisition with the skin-like electronics, gently mounted on hypersensitive, cutaneous wound and contralateral tissues on patients.

This article presents methods to fabricate and characterize a conformal, skin-like electronic system and protocols for the use in clinical applications, particularly on cutaneous wound management.

Kantitatif, Deri Yara Yönetimi için bir konformal Cilt benzeri elektronik Sistemi İmalat ve Karakterizasyonu

Recent advances in the development of electronic technologies and biomedical devices offer opportunities for non-invasive, quantitative assessment of ...

Biyomühendislik

Hybrid Printing for the Fabrication of Smart Sensors

A method to combine additively manufactured substrates or foils and multilayer inkjet printing for the fabrication of sensor devices is presented. First, three substrates (acrylate, ceramics, and copper) are prepared. To determine the resulting material properties of these substrates, profilometer, contact angle, scanning electron microscope (SEM), and focused ion beam (FIB) measurements are done. The achievable printing resolution and suitable drop volume for each substrate are, then, found through the drop size tests. Then, layers of insulating and conductive ink are inkjet printed alternately to fabricate the target sensor structures. After each printing step, the respective layers are individually treated by photonic curing. The parameters used for the curing of each layer are adapted depending on the printed ink, as well as on the surface properties of the respective substrate. To confirm the resulting conductivity and to determine the quality of the printed surface, four-point probe and profilometer measurements are done. Finally, a measurement set-up and results achieved by such an all-printed sensor system are shown to demonstrate the achievable quality.

Here we present a protocol for the fabrication of inkjet-printed multilayer sensor structures on additively manufactured substrates and foil.

Hibrid akıllı sensörler imalatı için yazdırma

A method to combine additively manufactured substrates or foils and multilayer inkjet printing for the fabrication of sensor devices is presented. First, ...

Fabricating Cotton Analytical Devices

A robust, low-cost analytical device should be user-friendly, rapid, and affordable. Such devices should also be able to operate with scarce samples and provide information for follow-up treatment. Here, we demonstrate the development of a cotton-based urinalysis (i.e., nitrite, total protein, and urobilinogen assays) analytical device that employs a lateral flow-based format, and is inexpensive, easily fabricated, rapid, and can be used to conduct multiple tests without cross-contamination worries. Cotton is composed of cellulose fibers with natural absorptive properties that can be leveraged for flow-based analysis. The simple but elegant fabrication process of our cotton-based analytical device is described in this study. The arrangement of the cotton structure and test pad takes advantage of the hydrophobicity and absorptive strength of each material. Because of these physical characteristics, colorimetric results can persistently adhere to the test pad. This device enables physicians to receive clinical information in a timely manner and shows great potential as a tool for early intervention.

To investigate simple fabrication approaches for multiple assay needs, we created a fluid-absorbing channel system made of cotton material. This device was used to establish a multiple detection platform, and solve contamination issues that commonly affect lateral flow-based biomedical devices, for clinical urinalysis of nitrite, total protein, and urobilinogen.

Pamuk Analitik Cihazlar imalatı

A robust, low-cost analytical device should be user-friendly, rapid, and affordable. Such devices should also be able to operate with scarce samples and ...

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.

Çözüm Biriktirmeden Verimli OLED'lerin Geliştirilmesi

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

Fabrication of Fine Electrodes on the Tip of Hypodermic Needle Using Photoresist Spray Coating and Flexible Photomask for Biomedical Applications

We have introduced a fabrication method for electrical impedance spectroscopy (EIS)-on-a-needle (EoN: EIS-on-a-needle) to locate target tissues in the body by measuring and analyzing differences in the electrical impedance between dissimilar biotissues. This paper describes the fabrication method of fine interdigitated electrodes (IDEs) at the tip of a hypodermic needle using a photoresist spray coating and flexible film photomask in the photolithography process. A polyethylene terephthalate (PET) heat shrink tube (HST) with a wall thickness of 25 &#181;m is employed as the insulation and passivation layer. The PET HST shows a higher mechanical durability compared with poly(p-xylylene) polymers, which have been widely used as a dielectric coating material. Furthermore, the HST shows good chemical resistance to most acids and bases, which is advantageous for limiting chemical damage to the EoN. The use of the EoN is especially preferred for the characterization of chemicals/biomaterials or fabrication using acidic/basic chemicals. The fabricated gap and width of the IDEs are as small as 20 &#181;m, and the overall width and length of the IDEs are 400 &#181;m and 860 &#181;m, respectively. The fabrication margin from the tip (distance between the tip of hypodermic needle and starting point of the IDEs) of the hypodermic needle is as small as 680 &#181;m, which indicates that unnecessarily excessive invasion into biotissues can be avoided during the electrical impedance measurement. The EoN has a high potential for clinical use, such as for thyroid biopsies and anesthesia drug delivery in a spinal space. Further, even in surgery that involves the partial resection of tumors, the EoN can be employed to preserve as much normal tissue as possible by detecting the surgical margin (normal tissue that is removed with the surgical excision of a tumor) between the normal and lesion tissues.

The fabrication method for fine interdigitated electrodes (gap and width: 20 &#181;m) at the tip of a hypodermic needle (diameter: 720 &#181;m) is demonstrated using a spray coating and flexible film photomask in the photolithography process.

Fotorezist sprey kaplama ve esnek Photomask Biyomedikal uygulamalarda kullanarak Hipodermik iğne ucu üzerinde ince elektrotlar imalatı

We have introduced a fabrication method for electrical impedance spectroscopy (EIS)-on-a-needle (EoN: EIS-on-a-needle) to locate target tissues in the ...