Ni/Au hybrid nanoparticle arrays as a highly efficient, cost-effective and stable SERS substrate

RSC Advances ◽  
2015 ◽  
Vol 5 (8) ◽  
pp. 6172-6180 ◽  
Author(s):  
Qun Fu ◽  
Kin Mun Wong ◽  
Yi Zhou ◽  
Minghong Wu ◽  
Yong Lei
Keyword(s):  
Cost Effective ◽  
Sers Substrate ◽  
Nanoparticle Arrays ◽  
Large Area ◽  
Simple Process ◽  
Highly Efficient ◽  
Hybrid Nanoparticle

A large-area highly efficient, cost-effective and stable SERS substrate is synthesized with a proposed versatile and simple process.

Facile fabrication of a large-area and cost-effective PDMS-SERS substrate by sandpaper template-assisted lithography

2019 ◽  
Vol 11 (38) ◽  
pp. 4917-4922 ◽  
Author(s):  
Ji Sun ◽  
Lin Gong ◽  
Zhengjun Gong ◽  
Dongmei Wang ◽  
Xiaosi Yin ◽  
...  
Keyword(s):  
Cost Effective ◽  
Sers Substrate ◽  
Large Area ◽  
Facile Fabrication

In this study, a highly reproducible Ag NP loaded polydimethylsiloxane (PDMS) SERS substrate was fabricated by a simple template lithography method.

scholarly journals Strong texture tuning along different crystalline directions in glass-supported CeO2 thin films by ultrasonic spray pyrolysis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Inti Zumeta-Dubé ◽  
José Manuel García Rangel ◽  
Jorge Roque ◽  
Issis Claudette Romero-Ibarra ◽  
Mario Fidel García Sánchez
Keyword(s):  
Thin Films ◽  
Spray Pyrolysis ◽  
Spray Pyrolysis Technique ◽  
Morphological Characteristics ◽  
Ultrasonic Spray Pyrolysis ◽  
Cost Effective ◽  
Growth Direction ◽  
Large Area ◽  
Smart Windows ◽  
Ultrasonic Spray

AbstractThe strong facet-dependent performance of glass-supported CeO2 thin films in different applications (catalysis, smart windows, etc.) has been the target of diverse fundamental and technological approaches. However, the design of accurate, cost-effective and scalable methods with the potential for large-area coverage that produce highly textured glass-supported CeO2 thin films remains a technological challenge. In the present work, it is demonstrated that under proper tuning conditions, the ultrasonic spray pyrolysis technique enables one to obtain glass-supported polycrystalline CeO2 films with noticeable texture along both the (100) and (111) directions, as well as with randomly oriented crystallites (no texture). The influence of flow rates, solution molarity, and substrate temperature on the texture and morphological characteristics, as well as optical absorption and Raman response of the deposited films, is evaluated. The obtained results are discussed on the basis of the combined dependence of the CeO2-exposed surfaces on the thermodynamic stability of the corresponding facets and the reaction kinetics, which modulate the crystallite growth direction.

scholarly journals All-Organic, Low Voltage, Transparent and Compliant Organic Field-Effect Transistor Fabricated by Means of Large-Area, Cost-Effective Techniques

2020 ◽  
Vol 10 (19) ◽  
pp. 6656
Author(s):  
Stefano Lai ◽  
Giulia Casula ◽  
Pier Carlo Ricci ◽  
Piero Cosseddu ◽  
Annalisa Bonfiglio
Keyword(s):  
Field Effect ◽  
Low Voltage ◽  
Field Effect Transistors ◽  
High Mobility ◽  
Chemical Vapor ◽  
Cost Effective ◽  
Large Area ◽  
Parylene C ◽  
Biomedical Sensing ◽  
Novel Applications

The development of electronic devices with enhanced properties of transparency and conformability is of high interest for the development of novel applications in the field of bioelectronics and biomedical sensing. Here, a fabrication process for all organic Organic Field-Effect Transistors (OFETs) by means of large-area, cost-effective techniques such as inkjet printing and chemical vapor deposition is reported. The fabricated device can operate at low voltages (as high as 4 V) with ideal electronic characteristics, including low threshold voltage, relatively high mobility and low subthreshold voltages. The employment of organic materials such as Parylene C, PEDOT:PSS and 6,13-Bis(triisopropylsilylethynyl)pentacene (TIPS pentacene) helps to obtain highly transparent transistors, with a relative transmittance exceeding 80%. Interestingly enough, the proposed process can be reliably employed for OFET fabrication over different kind of substrates, ranging from transparent, flexible but relatively thick polyethylene terephthalate (PET) substrates to transparent, 700-nm-thick, compliant Parylene C films. OFETs fabricated on such sub-micrometrical substrates maintain their functionality after being transferred onto complex surfaces, such as human skin and wearable items. To this aim, the electrical and electromechanical stability of proposed devices will be discussed.

Cost-effective synthesis and solution processing of porous polymer networks through methanesulfonic acid-mediated aldol triple condensation

2018 ◽  
Vol 2 (2) ◽  
pp. 396-401 ◽  
Author(s):  
Zi-Hao Guo ◽  
Chenxu Wang ◽  
Qiang Zhang ◽  
Sai Che ◽  
Hong-Cai Zhou ◽  
...  
Keyword(s):  
Polymer Networks ◽  
Methanesulfonic Acid ◽  
Cost Effective ◽  
Porous Polymer ◽  
Solution Processing ◽  
Condensation Method ◽  
Highly Efficient ◽  
Effective Synthesis ◽  
Scalable Synthesis

A highly efficient aldol triple condensation method was developed for scalable synthesis and solution processing of conjugated porous polymer networks.

25.2: Simple Process of Hillock-Free Al-Gate Metallization without ITO/Al Contact Problems for Large-Area TFT-LCDs

1998 ◽  
Vol 29 (1) ◽  
pp. 375 ◽  
Author(s):  
H. S. Seo ◽  
J. B. Choi ◽  
D. C. Yun ◽  
C. D. Kim ◽  
H. S. Soh
Keyword(s):  
Contact Problems ◽  
Large Area ◽  
Simple Process

Plasmonic paper as a highly efficient SERS substrate

2012 ◽  
Author(s):  
Chang H. Lee ◽  
Mikella E. Hankus ◽  
Limei Tian ◽  
Paul M. Pellegrino ◽  
Srikanth Singamaneni
Keyword(s):  
Sers Substrate ◽  
Highly Efficient ◽  
Plasmonic Paper

scholarly journals Electrochemical Impedance Spectroscopy Analysis of Hole Transporting Material Free Mesoporous and Planar Perovskite Solar Cells

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1635
Author(s):  
Sumayya M. Abdulrahim ◽  
Zubair Ahmad ◽  
Jolly Bahadra ◽  
Noora J. Al-Thani
Keyword(s):  
Solar Cells ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Perovskite Solar Cells ◽  
Cost Effective ◽  
Hole Transport ◽  
Large Area ◽  
The Future ◽  
Hole Transporting Material

The future photovoltaic technologies based on perovskite materials are aimed to build low tech, truly economical, easily fabricated, broadly deployable, and trustworthy solar cells. Hole transport material (HTM) free perovskite solar cells (PSCs) are among the most likely architectures which hold a distinctive design and provide a simple way to produce large-area and cost-effective manufacture of PSCs. Notably, in the monolithic scheme of the HTM-free PSCs, all layers can be printed using highly reproducible and morphology-controlled methods, and this design has successfully been demonstrated for industrial-scale fabrication. In this review article, we comprehensively describe the recent advancements in the different types of mesoporous (nanostructured) and planar HTM-free PSCs. In addition, the effect of various nanostructures and mesoporous layers on their performance is discussed using the electrochemical impedance spectroscopy (EIS) technique. We bring together the different perspectives that researchers have developed to interpret and analyze the EIS data of the HTM-free PSCs. Their analysis using the EIS tool, the limitations of these studies, and the future work directions to overcome these limitations to enhance the performance of HTM-free PSCs are comprehensively considered.

scholarly journals WS(1−x)Sex Nanoparticles Decorated Three-Dimensional Graphene on Nickel Foam: A Robust and Highly Efficient Electrocatalyst for the Hydrogen Evolution Reaction

Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 929 ◽  
Author(s):  
Sajjad Hussain ◽  
Kamran Akbar ◽  
Dhanasekaran Vikraman ◽  
Rana Afzal ◽  
Wooseok Song ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Large Scale ◽  
Nickel Foam ◽  
Transition Metal Dichalcogenides ◽  
Three Dimensional ◽  
Cost Effective ◽  
Highly Efficient ◽  
Highly Active ◽  
Earth Abundant

To find an effective alternative to scarce, high-cost noble platinum (Pt) electrocatalyst for hydrogen evolution reaction (HER), researchers are pursuing inexpensive and highly efficient materials as an electrocatalyst for large scale practical application. Layered transition metal dichalcogenides (TMDCs) are promising candidates for durable HER catalysts due to their cost-effective, highly active edges and Earth-abundant elements to replace Pt electrocatalysts. Herein, we design an active, stable earth-abundant TMDCs based catalyst, WS(1−x)Sex nanoparticles-decorated onto a 3D porous graphene/Ni foam. The WS(1−x)Sex/graphene/NF catalyst exhibits fast hydrogen evolution kinetics with a moderate overpotential of ~−93 mV to drive a current density of 10 mA cm−2, a small Tafel slope of ~51 mV dec−1, and a long cycling lifespan more than 20 h in 0.5 M sulfuric acid, which is much better than WS2/NF and WS2/graphene/NF catalysts. Our outcomes enabled a way to utilize the TMDCs decorated graphene and precious-metal-free electrocatalyst as mechanically robust and electrically conductive catalyst materials.

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