Searched for: author:"Unnikrishnan, S."
(1 - 14 of 14)
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Pezone, R. (author), Vollebregt, S. (author), Sarro, P.M. (author), Unnikrishnan, S. (author)
Control of the morphology of carbon nanotubes (CNT) is fundamental for many applications. It is known that the catalyst distributions influence the vertical alignment and the height of the CNT. In this work we investigate the influence of the pre-anneal time and reductant gases, specifically NH3 and H2 as well as combinations thereof, on the...
article 2020
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Unnikrishnan, S. (author), Ameen, M. (author), Anothumakkool, B. (author), Haverkate, L. (author), Grob, F. (author), Roozeboom, F. (author)
Li-ion batteries have emerged as the key energy storage technology, not only in portable electronics & gadgets but also in electric vehicles (EV) and grid-storage. A combination of high energy density anodes such as silicon or lithium, and Ni- or Li-rich cathode1,2 is necessary to achieve the targeted energy density of >350 Wh/Kg. The challenge...
public lecture 2020
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Ameen, M. (author), Beeker, I. (author), Haverkate, L. (author), Anothumakkool, B. (author), Grob, B. (author), Hermes, D. (author), Huijssen, N. (author), Khandan Del, S. (author), Roozeboom, F. (author), Unnikrishnan, S. (author)
public lecture 2020
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Liu, M. (author), Wang, C. (author), Cheng, Z. (author), Ganapathy, S. (author), Haverkate, L.A. (author), Unnikrishnan, S. (author), Wagemaker, M. (author)
Solid-state lithium-metal batteries are considered to be promising candidates for next-generation high-energy density storage devices to power electrical vehicles. Critical challenges for solid-state lithium-metal batteries include the large morphological changes associated with the plating and stripping of lithium metal and decomposition of the...
article 2020
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Ameen, M. (author), Poplawski, M. (author), Haverkate, L. (author), Grob, F. (author), Anothumakkool, B. (author), Hermes, D. (author), del Khandan, S. (author), Roozeboom, F. (author), Unnikrishnan, S. (author)
public lecture 2019
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Kazemi, N. (author), Danilov, D.L. (author), Haverkate, L.A. (author), Dudney, N.J. (author), Unnikrishnan, S. (author), Notten, P.H.L. (author)
Thin-film Solid-State Batteries (TFSSB) is one of most promising and quickly developing fields in modern electrochemical energy storage. Modeling these devices is interesting from theoretical and practical point of view. This paper represents a simulation approach for TFSSB which overcome a major drawback of available mathematical models, i.e....
article 2019
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Moitzheim, S. (author), Balder, J.E. (author), Ritasalo, R. (author), Ek, S. (author), Poodt, P. (author), Unnikrishnan, S. (author), de Gendt, S. (author), Vereecken, P.M. (author)
Three-dimensional (3D) thin-film solid-state batteries are an interesting concept for microstorage, promising high footprint capacity, fast charging, safety, and long lifetime. However, to realize their commercialization, several challenges still need to be overcome. In this work, we focus on two issues: the conformal coating and the high...
article 2019
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Liu, M. (author), Cheng, Z. (author), Ganapathy, S. (author), Wang, C. (author), Haverkate, L.A. (author), Tułodziecki, M. (author), Unnikrishnan, S. (author), Wagemaker, M. (author)
In common hybrid solid electrolytes (HSEs), either the ionic conductivity of the polymer electrolyte is enhanced by the presence of a nanosized inorganic filler, which effectively decrease the glass-transition temperature, or the polymer solid electrolyte acts mostly as a flexible host for the inorganic solid electrolyte, the latter providing...
article 2019
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Xu, Y. (author), Menon, A.S. (author), Harks, P.P.R.M.L. (author), Hermes, D.C. (author), Haverkate, L.A. (author), Unnikrishnan, S. (author), Mulder, F.M. (author)
Li and Na metals have the highest theoretical anode capacity for Li/Na batteries, but the operational safety hazards stemming from uncontrolled growth of Li/Na dendrites and unstable electrode-electrolyte interfaces hinder their real-world applications. Recently, the emergence of 3D conductive scaffolds aimed at mitigating the dendritic growth...
article 2018
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Moitzheim, S. (author), Balder, J.E. (author), Poodt, P. (author), Unnikrishnan, S. (author), de Gendt, S. (author), Vereecken, P.M. (author)
Titania (TiO2) offers a high theoretical capacity of 336 mAh g-1 with the insertion of one Li per Ti unit. Unfortunately, the poor ionic and electronic conductivity of bulk TiO2 electrodes limits its practical implementation. Nanosizing titania below ∼20 nm has shown to increase the rate performance and accessible capacity but still not more...
article 2017
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van de Weijer, P. (author), Bouten, P.C.P. (author), Unnikrishnan, S. (author), Akkerman, H.B. (author), Michels, J.J. (author), van Mol, T.M.B. (author)
Organic light-emitting diodes degrade rapidly by means of local cathode oxidation when exposed to the ambient atmosphere, resulting in visible non-emissive areas called black spots. High performance inorganic based encapsulations are required to protect the OLED. We have applied a hybrid thin-film encapsulation stack consisting of two inorganic...
article 2017
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Van Assche, F.J.H. (author), Unnikrishnan, S. (author), Michels, J.J. (author), van Mol, A.M.B. (author), van de Weijer, P. (author), van de Sanden, M.C.M. (author), Creatore, M. (author)
We report on a low substrate temperature (110°C) remote microwave plasma-enhanced chemical vapor deposition (PECVD) process of silicon nitride barrier layers against moisture permeation for organic light emitting diodes (OLEDs) and other moisture sensitive devices such as organic photovoltaic cells (OPVs). Specifically, the influence of the SiH4...
article 2014
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Li, F.M. (author), Unnikrishnan, S. (author), van de Weijer, P. (author), van Assche, F. (author), Shen, J. (author), Ellis, T. (author), Manders, W. (author), Akkerman, H. (author), Bouten, P. (author), van Mol, A.M.B. (author)
The availability of a high performance thin-film barrier is the most critical challenge in upscaling and commercializing flexible OLED products. We report a flexible thin-film-barrier technology that meets lifetime specifications for OLED lighting, and demonstrate it in rollable QVGA a-IGZO AMOLED displays. Roll-to-roll manufacturing of this...
article 2013
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George, A. (author), Stawski, T.M. (author), Unnikrishnan, S. (author), Veldhuis, S.A. (author), ten Elshof, J.E. (author)
A simple and cost effective methodology for large area micro and nanopatterning of a wide range of functional materials on flexible substrates is presented. A hydrophobic-hydrophilic chemical contrast was patterned on surfaces of various flexible plastic substrates using molds and shadow masks with which selected areas of the substrate surface...
article 2012
Searched for: author:"Unnikrishnan, S."
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