- document
-
Rahimi, E. (author), Kosari, A. (author), Hosseinpour, S. (author), Davoodi, Ali (author), Zandbergen, H.W. (author), Mol, J.M.C. (author)In this study, we report on a combined microscopic, analytical and electrochemical characterization of the nanoscopic passive layer on a tungsten‑molybdenum-containing super duplex stainless steel. We used scanning transmission electron microscopy/energy dispersive X-ray spectroscopy, scanning Kelvin probe force microscopy, scanning tunneling...journal article 2019
- document
-
Heerema, S.J. (author), Vicarelli, L. (author), Pud, S. (author), Schouten, R.N. (author), Zandbergen, H.W. (author), Dekker, C. (author)Many theoretical studies predict that DNA sequencing should be feasible by monitoring the transverse current through a graphene nanoribbon while a DNA molecule translocates through a nanopore in that ribbon. Such a readout would benefit from the special transport properties of graphene, provide ultimate spatial resolution because of the single...journal article 2018
- document
-
Liu, C. (author), Malladi, S.R.K. (author), Xu, Q. (author), Chen, Jianghua (author), Tichelaar, F.D. (author), Zhuge, Xiaodong (author), Zandbergen, H.W. (author)Age-hardening in Al alloys has been used for over a century to improve its mechanical properties. However, the lack of direct observation limits our understanding of the dynamic nature of the evolution of nanoprecipitates during age-hardening. Using in-situ (scanning) transmission electron microscopy (S/TEM) while heating an Al-Cu alloy, we...journal article 2017
- document
-
Yu, C. (author), Ganapathy, S. (author), van Eck, Ernst R H (author), van Eijck, L. (author), Basak, S. (author), Liu, Yanyan (author), Zhang, Long (author), Zandbergen, H.W. (author), Wagemaker, M. (author)Based on its high Li-ion conductivity, argyrodite Li6PS5Br is a promising solid electrolyte for all-solid-state batteries. However, more understanding is required on the relation between the solid electrolyte conductivity and the solid-state battery performance with the argyrodite structure, crystallinity and particle size that depend on the...journal article 2017
- document
-
Kabiri, Y. (author), Ananth, A.N. (author), van der Torre, J. (author), Katan, A.J. (author), Hong, Jin Yong (author), Malladi, S.R.K. (author), Kong, Jing (author), Zandbergen, H.W. (author), Dekker, C. (author)While graphene may appear to be the ultimate support membrane for transmission electron microscopy (TEM) imaging of DNA nanostructures, very little is known if it poses an advantage over conventional carbon supports in terms of resolution and contrast. Microscopic investigations are carried out on DNA origami nanoplates that are supported...journal article 2017
- document
-
Neklyudova, M. (author), Erdamar, A.K. (author), Vicarelli, L. (author), Heerema, S.J. (author), Rehfeldt, T. (author), Pandraud, G. (author), Koladouz Esfahani, Z. (author), Dekker, C. (author), Zandbergen, H.W. (author)We present a technique to fabricate ultrathin (down to 20 nm) uniform electron transparent windows at dedicated locations in a SiN membrane for in situ transmission electron microscopy experiments. An electron-beam (e-beam) resist is spray-coated on the backside of the membrane in a KOH-etched cavity in silicon which is patterned using...journal article 2017
- document
-
Neklyudova, M. (author), Sabater, C. (author), Erdamar, A.K. (author), Van Ruitenbeek, J. M. (author), Zandbergen, H.W. (author)We have performed a range of in situ heating experiments of polycrystalline Bi films of 22-25 nm-thickness in a transmission electron microscope (TEM). This shows that it is possible to locally transform a polycrystalline thin film into a [111]-oriented single-crystalline film, whereby the unique feature is that the original thickness of the...journal article 2017
- document
-
Ganapathy, S. (author), Li, Z. (author), Anastasaki, Maria S. (author), Basak, S. (author), Miao, X.F. (author), Goubitz, K. (author), Zandbergen, H.W. (author), Mulder, F.M. (author), Wagemaker, M. (author)The high theoretical energy density of Li-O<sub>2</sub> batteries as required for electrification of transport has pushed Li-O<sub>2</sub> research to the forefront. The poor cyclability of this system due to incomplete Li<sub>2</sub>O<sub>2</sub> oxidation is one of the major hurdles to be crossed if it is ever to deliver a high reversible...journal article 2016
- document
-
Feng, J. (author), Guo, Xiaoai (author), Ramlawi, N. (author), Pfeiffer, T.V. (author), Geutjens, R. (author), Basak, S. (author), Nirschl, Hermann (author), Biskos, G. (author), Zandbergen, H.W. (author), Schmidt-Ott, A. (author)High-yield and continuous synthesis of ultrapure inorganic nanoparticles (NPs) of well-defined size and composition has invariably been one of the major challenges in nanotechnology. Employing green techniques that avoid the use of poisonous and expensive chemicals has been realized as a necessity for manufacturing NPs on an industrial scale. In...journal article 2016
- document
-
Cordeiro Guerrieri, D. (author), de Athayde Costa e Silva, M. (author), Zandbergen, B.T.C. (author), Cervone, A. (author)This paper presents a dynamic system approach for the modeling of fluid flow in microchannels to be used in thrust control applications. A micro-resistojet fabricated using MEMS (Microelectromechanical Systems) technology has been selected for the analysis. The device operates by vaporizing a liquid propellant, in this case water, and expelling...conference paper 2016
- document
-
Cervone, A. (author), Zandbergen, B.T.C. (author), Cordeiro Guerrieri, D. (author), de Athayde Costa e Silva, M. (author), van Zeijl, H.W. (author)The aerospace industry is recently expressing a growing interest in green, safe and non-toxic propellants for the propulsion systems of the new generation of space vehicles, which is especially true in the case of Cubesat micro-propulsion systems. Demanding requirements are associated to the future missions and challenges offered by this class...journal article 2016
- document
-
Werner, R.M. (author), Knop, T.R. (author), Wink, J (author), Ehlen, J (author), Huijsman, R (author), Powell, S (author), Florea, R. (author), Wieling, W (author), Cervone, A. (author), Zandbergen, B.T.C. (author)This paper presents the development work of the 10 kN hybrid rocket motor DHX-200 Aurora. The DHX-200 Aurora was developed by Delft Aerospace Rocket Engineering (DARE) to power the Stratos II and Stratos II+ sounding rocket, with the later one being launched in October 2015. Stratos II and Stratos II+ are the flagship projects of DARE, a student...conference paper 2016
- document
-
Wink, J (author), Hermsen, R. (author), Huijsman, R (author), Akkermans, C. (author), Denies, L. (author), Barreiro, F. (author), Schutte, A. (author), Cervone, A. (author), Zandbergen, B.T.C. (author)This paper describes the current developments regarding cryogenic rocket engine technology at Delft Aerospace Rocket Engineering (DARE). DARE is a student society based at Delft University of Technology with the goal of being the first student group in the world to launch a rocket into space. After the launch of the hybrid engine powered Stratos...conference paper 2016
- document
-
van Wees, T. (author), Hanselaar, C.A.J. (author), Jansen, E (author), Cervone, A. (author), Zandbergen, B.T.C. (author), van Zeijl, H.W. (author)In the last decade, CubeSat development has shown the potential to allow for low-risk, low-cost space missions. To further improve the capabilities of CubeSats in large scale missions, a novel micro-propulsion system is being developed at Delft University of Technology. The system is based on a Vaporizing Liquid Microthruster (VLM), which is...conference paper 2016
- document
-
Denies, L. (author), Zandbergen, B.T.C. (author), Natale, P. (author), Ricci, D. (author), Invigorito, M. (author)Methane is a promising propellant for liquid rocket engines. As a regenerative coolant, it would be close to its critical point, complicating cooling analysis. This study encompasses the development and validation of a new, open-source computational fluid dynamics (CFD) method for analysis of methane cooling channels. Validation with...conference paper 2016
- document
-
Zandbergen, H.W. (author)The present invention is in the field of a transferrable system for use in in-situ experiments in a microscope and spectrometer, use of said transferrable system, and a microscope or spectrometer comprising said transferrable system, wherein the microscope is selected from an electron microscope, an IR-microscope, a Raman-microscope, X-ray micro...patent 2015
- document
-
Allen, C.S. (author), Liberti, E. (author), Kim, J.S. (author), Xu, Q. (author), Fan, Y. (author), He, K. (author), Robertson, A.W. (author), Zandbergen, H.W. (author), Warner, J.H. (author), Kirkland, A.I. (author)We have measured the mean square amplitude of both in- and out-of-plane lattice vibrations for mono-layer graphene at temperatures ranging from ?100 K to 1300?K. The amplitude of lattice vibrations was calculated from data extracted from selected area electron diffraction patterns recorded across a known temperature range with over 80...journal article 2015
- document
-
Van Kesteren, M.W. (author), Zandbergen, B.T.C. (author), Naeije, M.C. (author), Van Kleef, A.J.P. (author)The work focusses on the use of multidisciplinary optimization to design a cost optimized airborne nanosatellite launch vehicle capable of bringing a 10 kg payload into low earth orbit (LEO). Piggyback or shared launch options currently available for nanosatellites are relatively low cost (~45,000 /kg) but have as serious disadvantage a limited...conference paper 2015
- document
-
Dildar, I.M. (author), Neklyudova, M. (author), Xu, Q. (author), Zandbergen, H.W. (author), Harkema, S. (author), Boltje, D. (author), Aarts, J. (author)Sputter deposition of oxide materials in a high-pressure oxygen atmosphere is a well-known technique to produce thin films of perovskite oxides in particular. Also interfaces can be fabricated, which we demonstrated recently by growing LaAlO3 on SrTiO3 substrates and showing that the interface showed the same high degree of epitaxy and atomic...journal article 2015
- document
-
Zandbergen, H.W. (author)The present invention is in the field of a low specimen drift holder and cooler for use in microscopy, and a microscope comprising said holder. The present invention is in the field of microscopy, specifically in the field of electron and focused ion beam mi- croscopy (EM and FIB). However it application is extendable in principle to any field...patent 2015