Lithography Part 12 pot

[...]... and 24% in each case of 20 wt%, 30 wt%, and 40 wt% silica particle loading samples, respectively (figure 12( d), 12( e), and 12( f)) Interestingly, through this, it was verified that the shrinkage can be reduced with a linear relation of 41(1-x)% for the silica particle percentage (x) In addition, the ceramic structure containing 40 wt% silica particle exhibited relatively isotropic shrinkage owing to... Generation of 100nm gold nanoparticles arrays by directed assembly 1) Capillary assembly of gold nanoparticles on a nanostructured PDMS stamp 2) Nanostructured PDMS stamp with assembled gold nanoparticles 3) The assembly is then transfer-printed with solvent mediation 4) The PDMS stamp is finally peeled away We obtain nice and regular nanoparticle patterns and the totality of the particles is transferred... periodic bi dimensional matrix of 100nm gold nanoparticles B) Scanning Electron Microscope image of a nanoparticle matrix C) Confocal image of a controlled array of gold nanoparticles revealing a metal- enhanced fluorescence effect D) Raman mapping of a controlled array of gold nanoparticles and E) its equivalent in intensity levels revealing a SERS effect 454 Lithography So we could later imagine including... plasmonics in particular (Surface Enhanced Raman Scattering, Metal Enhanced Fluorescence) By using the same technique as previously described, but this time by using a nanostructured PDMS stamp and by placing between the fixed glass slide and the mobile stamp a colloidal suspension of gold nanoparticles, we are able to generate matrixes of gold nanoparticles with different numbers of particles and... this case, 452 Lithography the speed of the translation stage needs to be very low (1µm/sec) This time, accounting from the size of the nanoparticles, their irregular shape and the fact that the resulting assembly is dry, the formed nanoparticles arrays were extremely difficult to transfer onto a solid surface So we investigated different strategies to transfer print the assembled nanoparticles without... figure 12( g), 5.75 µm and 6.39 µm in figure 12( h), in contrast to these parameters of the non-free-standing structures Here, it is believed that 442 Lithography the pyrolytic shrinkage can be improved by controlling the resin compositions as well as the geometric constraints, including the design of the compensated structure, with a prediction model simulation (a) (b) (c) (d) (e) (f) (g) (h) Fig 12 Three-dimensional... nanoparticles onto a target surface Recently, we explored the possibility to generate bi dimensional matrixes of periodic sub-100nm gold nanoparticles patterns by directed assembly Small nanoparticles are the target of intense research due to their astonishing properties and their large window of applications in biology, nanoelectronics, spintronics, optics, chemical sensing, etc Assembling nanoparticles... Zhang, L.; Cheng, B.; Xie, T & Yuan, X (2004) J Am Chem Soc., Vol 126 , (59765977), 0002-7863 Yamazaki, K & Namatsu, H (2004) Microelectron Eng., Vol 73-74, (85-89), 0167-9317 Yan, J.; Wang, A & Kim D P (2006) J Phys Chem B, Vol 110, (5429-5433), 1089-5647 Xia, Y & Whitesides, G M (1998) Annu Rev Mater Sci., Vol 28, (153-184), 122 5-0 112 Xia, Y.; Rogers, J A.; Paul, K E & Whitesides, G M., (1999) Chem... these techniques rely on a soft mould or stamp (Quake & Sherer, 2000) Soft -lithography emerged in the early 90’s as a technique based on the use of an elastomer material named polydimethylsiloxane (PDMS) This polymer can be poured onto a siliconbased master with micro- or nanostructures made by photolithography or electron beam lithography respectively, to obtain a PDMS replication of the master’s structures... (CFA) The nanoparticles dragged by the convective flux in the droplet were forced to assemble on the surface close to the liquid meniscus A few years later, the group of Alivisatos (Klein et al., 1996) showed how this method could be combined with topographic patterns in order to control the position of the assembly as well as the shape of the nanoparticles’ patterns and this was called “Lithography . 28%, and 24% in each case of 20 wt%, 30 wt%, and 40 wt% silica particle loading samples, respectively (figure 12( d), 12( e), and 12( f)). Interestingly, through this, it was verified that the. Ref. 112 584.6 4.9 0.68 300 387.1 4.9 0.35 SiC 500 362.3 2.8 0.26 Wang et al., 2004 112 455.6 4.5 0.31 243 367.7 3.8 0.23 SiCN 500 316.4 3.1 0.18 Wang et al., 2005 145 412. 9. cruciform were also fabricated with the developed resin polymer mixed with 40 wt% silica particles (figure 12( g) and 12( h)), suggesting novel applicability for chemical channels, or even for use in