- document
-
Silvis-Cividjian, N. (author), Hagen, C.W. (author), Kruijt, P. (author), Van der Stam, M.A.J. (author), Groen, H.B. (author)Electron-beam-induced deposition (EBID) is a potentially fast and resistless deposition technique which might overcome the fundamental resolution limits of conventional electron-beam lithography. We advance the understanding of the EBID process by simulating the structure growth. The merit of our model is that it explains the shapes of...journal article 2003
- document
-
Silvis-Cividjian, N. (author), Hagen, C.W. (author), Kruit, P. (author)Electron-beam-induced deposition (EBID) is a versatile micro- and nanofabrication technique based on electron-induced dissociation of metal-carrying gas molecules adsorbed on a target. EBID has the advantage of direct deposition of three-dimensional structures on almost any target geometry. This technique has occasionally been used in focused...journal article 2005
- document
- Van Someren, B. (author), Van Bruggen, M.J. (author), Zhang, Y. (author), Hagen, C.W. (author), Kruit, P. (author) journal article 2006
- document
-
Kruit, P. (author), Hagen, C.W. (author), Mulder, E.H. (author)The invention relates 'to a micro X-ray source comprising a target acting as anode, and a cathode, which during operation interacts with the target and functions as electron source, wherein the target is embodied as a metal foil possessing a spot where the electrons from the electron source arrive, the metal foil being locally thinner at the spot.patent 2006
- document
- De Val, N. (author), Hagen, W.R. (author), Crichton, R.R. (author) journal article 2007
- document
- Tatur, J. (author), Hagen, W.R. (author), Matias, P.M. (author) journal article 2007
- document
-
Grigorescu, A.E. (author), Van der Krogt, M. (author), Hagen, C.W. (author)Isolated dots and lines with 6 nm width were written in 20 nm thick Hydrogen silsesquioxane (HSQ) layers on silicon substrates, using 100 keV electron beam lithography. The main factors that might limit the resolution, i.e. beam size, writing strategy, resist material, electron dose, development process, are discussed. We demonstrate that, by...conference paper 2007
- document
-
Hasan, M.N. (author), Van Loosdrecht, M.C.M. (author), Hagen, W.R. (author)The present invention relates to a material for removing oxo-anions and metal cations from a liquid. This material is characterized in that it comprises hyperthermophilic ferritin. The present invention also relates to a method for removing at least one of oxo-anions and metal cations from a liquid. This method is characterized in that a...patent 2007
- document
-
Hasan, M.N. (author), Van Loosdrecht, M.C.M. (author), Hagen, W.R. (author)The present invention relates to a material for removing oxo-anions and metal cations from a liquid. This material is characterized in that it comprises hyper thermophilic ferritin. The present invention also relates to a method for removing at least one of oxo-anions and metal cations from a liquid. Thi s method is characterized in that a...patent 2007
- document
-
Bol, E. (author), Broers, N.J. (author), Hagen, W.R. (author)Formaldehyde ferredoxin oxidoreductase from Pyrococcus furiosus is a homotetrameric protein with onetungstodipterin and one [4Fe–4S] cubane per 69-kDa subunit. The enzyme kinetics have been studied understeady-state conditions at 80 C and pre-steady state conditions at 50 C, in the latter case via monitoring of the relatively weak (e ~ 2 mM–1 cm...journal article 2007
- document
-
Bol, E. (author), Broers, N.J. (author), Hagen, W.R. (author)Formaldehyde ferredoxin oxidoreductase from Pyrococcus furiosus is a homotetrameric protein with one tungstodipterin and one [4Fe–4S] cubane per 69-kDa subunit. The enzyme kinetics have been studied under steady-state conditions at 80 °C and pre-steady state conditions at 50 °C, in the latter case via monitoring of the relatively weak (? ? 2 mM...journal article 2007
- document
- Grigorescu, A.E. (author), Van der Krogt, M.C. (author), Hagen, C.W. (author) journal article 2007
- document
- Hagen, C.W. (author), Van Dorp, W.F. (author), Crozier, P.A. (author) journal article 2008
- document
- Van Dorp, W.F. (author), Hagen, C.W. (author), Crozier, P.A. (author), Kruit, P. (author) journal article 2008
- document
- Grogorescu, A.E. (author), Van der Krogt, M.C. (author), Van der Drift, E.W.J.M. (author), Hagen, C.W. (author) journal article 2008
- document
- Kruit, P. (author), Van Dorp, W.F. (author), Hagen, C.W. (author), Crozier, P.A. (author) journal article 2008
- document
-
Van Dorp, W.F. (author), Hagen, C.W. (author)An extensive review is given of the results from literature on electron beam induced deposition. Electron beam induced deposition is a complex process, where many and often mutually dependent factors are involved. The process has been studied by many over many years in many different experimental setups, so it is not surprising that there is a...journal article 2008
- document
-
Hagen, C.W. (author), Fokkema, E. (author), Kruit, P. (author)The virtual source size of a liquid metal ion source is an order of magnitude larger than the size of the region from which the ions are emitted at the source. This source size has a direct effect on the reduced brightness and, hence, on the performance of these sources. The variation of the virtual source size of a gallium liquid metal ion...journal article 2008
- document
-
Castaldo, V. (author), Hagen, C.W. (author), Rieger, B. (author), Kruit, P. (author)In principle, a scanning ion microscope can produce smaller probe sizes than a scanning electron microscope because the diffraction contribution is smaller. However, the imaging resolution is often severely limited by the sputtering damage. In this article, an experimental procedure to establish the limit of a focused ion beam system for imaging...journal article 2008
- document
-
Overeijnder, M.L. (author), Hagen, W.R. (author), Hagedoorn, P.L. (author)Pyrococcus furiosus hybrid cluster protein (HCP) was expressed in Escherichia coli, purified, and characterized. This is the first archaeal and thermostable HCP to be isolated. Compared with the protein sequences of previously characterized HCPs from mesophiles, the protein sequence of P. furiosus HCP exhibits a deletion of approximately 13 kDa...journal article 2009