EP2307124A1 - Partikelfilter sowie herstellverfahren hierfür - Google Patents
Partikelfilter sowie herstellverfahren hierfürInfo
- Publication number
- EP2307124A1 EP2307124A1 EP09780946A EP09780946A EP2307124A1 EP 2307124 A1 EP2307124 A1 EP 2307124A1 EP 09780946 A EP09780946 A EP 09780946A EP 09780946 A EP09780946 A EP 09780946A EP 2307124 A1 EP2307124 A1 EP 2307124A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- particle filter
- membrane
- carbon material
- filter according
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000002245 particle Substances 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000012528 membrane Substances 0.000 claims abstract description 42
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 40
- 239000010432 diamond Substances 0.000 claims abstract description 40
- 239000011148 porous material Substances 0.000 claims abstract description 27
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000005530 etching Methods 0.000 claims description 24
- 229910052710 silicon Inorganic materials 0.000 claims description 22
- 239000010703 silicon Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 6
- 238000005229 chemical vapour deposition Methods 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 238000000059 patterning Methods 0.000 claims description 3
- 238000001020 plasma etching Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 8
- 238000009295 crossflow filtration Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- 239000002344 surface layer Substances 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 20
- 238000001514 detection method Methods 0.000 description 8
- 235000012431 wafers Nutrition 0.000 description 8
- 229910004298 SiO 2 Inorganic materials 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 239000003651 drinking water Substances 0.000 description 3
- 235000020188 drinking water Nutrition 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000007850 fluorescent dye Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 238000001459 lithography Methods 0.000 description 2
- 230000000873 masking effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000007847 structural defect Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 2
- -1 For example Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000014670 detection of bacterium Effects 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 230000010399 physical interaction Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 210000003296 saliva Anatomy 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 108700012359 toxins Proteins 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
- B01D71/021—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0039—Inorganic membrane manufacture
- B01D67/0053—Inorganic membrane manufacture by inducing porosity into non porous precursor membranes
- B01D67/006—Inorganic membrane manufacture by inducing porosity into non porous precursor membranes by elimination of segments of the precursor, e.g. nucleation-track membranes, lithography or laser methods
- B01D67/0062—Inorganic membrane manufacture by inducing porosity into non porous precursor membranes by elimination of segments of the precursor, e.g. nucleation-track membranes, lithography or laser methods by micromachining techniques, e.g. using masking and etching steps, photolithography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0039—Inorganic membrane manufacture
- B01D67/0072—Inorganic membrane manufacture by deposition from the gaseous phase, e.g. sputtering, CVD, PVD
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/02—Details relating to pores or porosity of the membranes
- B01D2325/028—Microfluidic pore structures
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/02—Silicon
- C01B33/021—Preparation
- C01B33/027—Preparation by decomposition or reduction of gaseous or vaporised silicon compounds other than silica or silica-containing material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/04—Coating on selected surface areas, e.g. using masks
- C23C16/042—Coating on selected surface areas, e.g. using masks using masks
Definitions
- the present invention relates to a mechanical particulate filter having a membrane having a plurality of pores, and a method for producing such a particulate filter.
- Such particulate filters are used to filter particles, such as bacteria, from a fluid.
- the filtered particles can be analyzed to determine the load of the fluid with certain particles.
- a particle filter of the type mentioned is known, in which the membrane is formed of a silicon-based material.
- a masking material is applied to the silicon and pressed into this masking material small beads, which displace the mask material punctually. Subsequently, the thus exposed areas of the silicon membrane are etched, so that pores are formed. Finally, the mask material is removed.
- US Pat. No. 5,753,014 shows a method for producing a membrane filter, in which a mask can be lithographed with the aid of a photosensitive layer. After exposure, the pores of the membrane are produced by etching.
- a particle filter is proposed in which at least one portion of a surface of the membrane which is accessible to the medium to be filtered is manufactured from a carbon material with a diamond structure and / or coated.
- the particle filter according to the invention has the advantage that the carbon material with diamond structure is chemically almost completely inert. This makes it easy to accomplish a simple cleaning, that is to say a removal of the particles enriched by the filter, since the particles hardly make firm connections with the membrane. Furthermore, a carbon material with diamond structure is mechanically very stable, so that when using the filter, a high differential pressure between both sides of the membrane can be used. This increases the flow rate through the filter.
- the membrane can be made entirely of the carbon material. Because the carbon material is transparent due to its diamond structure, it allows a membrane constructed in this way to be simple Examining the membrane to detect residual contamination after cleaning or structural defects in the membrane in a simple manner.
- the membrane can be made entirely of diamond.
- the membrane is supported by a carrier to which it is attached. This further increases the load capacity of the particulate filter.
- the carrier can be formed from a material that can be structured by lithography. This makes it possible to use the frame material during the production of the membrane as a support and then gently remove it from the porous region of the membrane.
- the material of the carrier has, in an advantageous embodiment, a crystal structure which predetermines the direction of an anisotropic etching process. In such a material, the shape of the carrier can be reliably determined.
- the carrier may be formed of silicon. Silicon has the advantage that it is available inexpensively, lithographable in industrially known processes and mechanically stable.
- the silicon has a (110) orientation.
- this orientation almost completely planar side walls of the carrier, which are perpendicular to the surface of the membrane, are achieved during etching after lithography.
- an etching mask is first applied and patterned on one side of a carrier, then a layer of a carbon material with a diamond structure is applied on the other side, wherein the layer an etching mask is deposited and patterned from carbon material, then the layer of carbon material is etched by etching, and finally the substrate is patterned by etching.
- Such a method has the advantage that it produces a heavy-duty membrane which is adapted to the carrier so that it has no biases. Furthermore, the thickness of the layer of carbon material and the arrangement and shape of the pores are easy to fix.
- the layer of carbon material is patterned by plasma etching. This method allows a reliable determination of the pore size and results in pore walls with low roughness.
- the support can be patterned by wet chemical anisotropic etching. This allows removal of the excess carrier material without attacking the membrane.
- the etching masks are removed after structuring. This avoids that the material of the etching masks comes into contact with the fluid to be filtered and possibly chemical or physical interactions that can destroy the particle filter or influence the result of analyzes.
- the support and / or the membrane may be finally covered with a layer of diamond-structure carbon material.
- the entire particulate filter is reliably separated from the fluid to be filtered.
- the layer of carbon material may be deposited by chemical vapor deposition in a methane hydrogen atmosphere become. This ensures a particularly uniform and reliable deposition of diamond-like carbon.
- Fig. 1 is a plan view of a particulate filter
- FIG. 2 shows a cross section through a particle filter along the line N-I in Fig. 1.
- FIG. 3 shows a cross section through a particle filter as in FIG. 2 in a production step;
- FIG. 4 shows a section through a particle filter as in FIG. 2 with an alternative orientation of the grid structure of the carrier, and
- FIG. 5 shows a section as in FIG. 2 through a diamond-coated section
- the particle filter 214 shown in FIGS. 1 and 2 has a membrane 312 and a carrier 314.
- pores 316 are introduced, which are arranged in a grid.
- the pores 316 have a round or square cross-section.
- the carrier 314 supports the membrane 312 in an edge region 318. In the area of the pores 316, a flow area 320 is provided.
- a silicon wafer 322 with (110) crystal authentication is provided as a starting material.
- the silicon 323 is thermally oxidized, so that, for example, SiO 2 324 is produced with a thickness of approximately 500 nm. Subsequently, the formed SiO2324 is removed from the front side 330. The SiO 2 324 on the backside 332 is patterned to later become the etch mask 326.
- DLC diamond like carbon
- a chromium layer is used in the thickness of e.g. applied and structured about 100nm. It serves as an etching mask for the subsequent structuring of the diamond 328.
- the diamond 328 is preferably structured by plasma etching and then removed the chromium mask.
- Fig. 3 shows the particulate filter after this step.
- the front side 330 is now protected in an etch holder and the silicon etched wet-chemically anisotropically starting from the back side 332.
- Suitable etchants are, for example, TMAH or potassium hydroxide.
- the SiO 2 324 on the back 32 serves as an etching mask 326. After completion of the etching process, this layer is removed.
- the particulate filter 214 looks like FIG. 2.
- the complete particulate filter 214 can be coated with a diamond layer 334, resulting in a highly stable, both chemically and mechanically resistant particulate filter 214 is formed. Even the silicon is protected and the entire particle filter 214 wrapped with diamond 328. The only exception to this are any external surfaces which are formed when the particulate filter 214 is separated (separated) be exposed. However, the outer surfaces are usually separated in any case by sealing rings of the fluid to be filtered.
- the individual chips or particle filters 214 may be coated with a diamond layer 334 after the wafer has been separated.
- the additional diamond layer 334 reduces the diameter of the pores 316. This should already be taken into account in structuring the chromium mask, in particular if a nominal diameter of the pores of, for example, approximately 450 nm is to be obtained.
- the particle filter 214 shown in FIG. 5 thus receives a diamond layer 334 which protects it against chemical and mechanical influences.
- the silicon can be completely removed, thereby obtaining individual thin filter membranes.
- the silicon wafer 322 can also consist of silicon with (IOO) orientation.
- silicon with (IOO) orientation in the wet-chemical anisotropic etching of such a silicon wafer 322, no vertical, but oblique edges are generated, whereby the packing density is reduced.
- thermally oxidized silicon (SiO 2 324) it is also possible to use other etching masks, for example differently deposited SiO 2 324 or Si 3 N 4 . It is also conceivable to use SOI wafers or to use further methods.
- a particulate filter 214 using SOI wafers with (IOO) orientation is shown in FIG.
- the particulate filter 214 completed by such an alternative process can then be provided with a diamond layer 334, which in turn creates a particulate filter 214 that is completely protected by diamond 328.
- This process is more complex in the processing, but has the advantage that the diamond layer 334 does not have to be structured.
- silicon other materials may also be used as supports for the membrane 322 of diamond 328.
- hard metal titanium or refractory metals such as W, Ta, Mo and their carbides in question.
- SiC and Si 3 N 4 are also particularly suitable.
- the diamond deposition takes place in particular by means of CVD (Chemical Vapor Deposition) in a methane-hydrogen atmosphere.
- CVD Chemical Vapor Deposition
- the energy required for the dissociation of the gases is advantageously provided by a hot filament.
- microwave plasma or shock discharge excitation (Are-Jet) possible.
- fluorescent dyes are excited by a laser and the emitted light is measured with a detector.
- particulate filters 214 Because diamond is transparent, the use of particulate filters 214 described herein enables illumination and detection of to have different pages done. This is advantageous in the detection of the particles.
- the particle filters 214 with a membrane 312 made of diamond 328 are particularly suitable for the determination and measurement of viruses in media such as blood and saliva.
- finer pores 316 are used, for example, with 50nm diameter. Pores 316 of very small diameter beyond the resolution limit of conventional exposure and patterning processes can be made reproducible by coating a finished particle filter or one in which at least diamond 328 is already patterned with another diamond layer 334. As a result, pores 316 narrow.
- Direct detection without fluorescence can be used in particular for spatially resolved illumination in order to be able to detect structural defects in the particle filter 214 or inadequate cleaning. Furthermore, this information can be evaluated so that a warning is given or the particulate filter 214 is replaced.
- the hole diameter may be 450 nm.
- the membrane thickness is approximately 1 ⁇ m.
- the pores 316 should have a high verticality to the surface of the membrane 312.
- the roughness of the perforation on the inside of the pores 316 is rms ⁇ 2 ⁇ m, preferably rms ⁇ 100 nm and particularly preferably ⁇ 50 nm.
- the grain size of the diamond layer should be less than 1 .mu.m, preferably less than 50 nm and more preferably less than 20 nm.
- the bending fracture stress of the diamond layer should be more than 1 G Pa, preferably more than 4 GPa, and more preferably more than 7 GPa.
- the modulus of elasticity should be above 500 GPa, preferably above 700 GPa and particularly preferably above 1000 GPa.
- the particle filter 214 can not only be used for detection or analysis, but can also be used for targeted cleaning of media (filters), for example for cleaning drinking water.
- the particulate filter 214 allows bacterial accumulation in water or air through a micromechanical surface filter, for example, to improve a detection limit of an analyzer.
- a micromechanical surface filter for example, to improve a detection limit of an analyzer.
- the particulate filter 214 has high chemical and mechanical robustness. This requires a high degree of recycling and thus a high degree of automation.
- the particle filter can be used in a detection method in which the medium is detected by thin particles to detect certain particles in media (eg bacteria in drinking water) Filter is pumped.
- the particulate filter 214 has pores 316 of a diameter adapted so that the particles to be detected and any particles as large or larger remain on the filter surface, i. be enriched there.
- diamond or a diamond-like material may be used as the material for such a filter to achieve very high mechanical and chemical stability.
- the high mechanical stability enables the generation of a high differential pressure between both sides of the membranes, whereby the flow rate through the filter can be increased.
- the pore density can be increased to increase the percentage of pore area over the entire area of the filter. This is of particular interest in terms of miniaturization of the overall system.
- Figures 1 and 2 show a plan view and a cross section through the particle filter used as a filter element.
- the pores are preferably round, but may also have a different shape.
- the particles on the filter surface After enriching the particles on the filter surface these are directly or z. B. detected after labeling with dyes.
- the particles for. As bacteria, viruses or toxins, specifically with fluorescent dyes, z.
- fluorescently labeled antibodies provided to them after excitation with light of suitable wavelength with a detector, for. B. photo multiplier or CCD camera to detect. This principle is also transferable to other labeling and detection methods.
- the fluidic system is cleaned after each sample examined. All previously added substances (sample to be examined, markers, auxiliary reagents, dirt and impurities) are removed by removing aggressive chemicals such as: For example, acids, alkalis or solvents can be used for cleaning. LIST OF REFERENCE NUMBERS
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Filtering Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200810035772 DE102008035772B4 (de) | 2008-07-31 | 2008-07-31 | Partikelfilter sowie Herstellverfahren hierfür |
| PCT/EP2009/059449 WO2010012643A1 (de) | 2008-07-31 | 2009-07-22 | Partikelfilter sowie herstellverfahren hierfür |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2307124A1 true EP2307124A1 (de) | 2011-04-13 |
Family
ID=41151860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09780946A Withdrawn EP2307124A1 (de) | 2008-07-31 | 2009-07-22 | Partikelfilter sowie herstellverfahren hierfür |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9028698B2 (de) |
| EP (1) | EP2307124A1 (de) |
| DE (1) | DE102008035772B4 (de) |
| WO (1) | WO2010012643A1 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009048790B4 (de) | 2009-10-08 | 2015-07-02 | Airbus Defence and Space GmbH | Biosensorvorrichtung mit Filterüberwachungseinrichtung |
| US8673164B2 (en) * | 2011-09-29 | 2014-03-18 | Uchicago Argonne, Llc | Simple method to fabricate nano-porous diamond membranes |
| EP2892638A4 (de) | 2012-09-06 | 2016-06-01 | Univ Colorado Regents | Filtrationsmembranen mit strukturen in nanomassstab |
| CN104014254B (zh) * | 2014-05-30 | 2015-12-02 | 北京大学 | 超薄类金刚石薄膜过滤膜 |
| EP3281910B1 (de) * | 2016-08-11 | 2019-10-02 | IMEC vzw | Verfahren zur herstellung von mikro-rohren auf einem substrat und daraus hergestellte struktur |
| US20190225930A1 (en) * | 2016-09-13 | 2019-07-25 | HysOcean, Inc. | Microfluidic filter devices and methods |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7101392B2 (en) * | 1992-03-31 | 2006-09-05 | Boston Scientific Corporation | Tubular medical endoprostheses |
| NL9401260A (nl) | 1993-11-12 | 1995-06-01 | Cornelis Johannes Maria Van Ri | Membraan voor microfiltratie, ultrafiltratie, gasscheiding en katalyse, werkwijze ter vervaardiging van een dergelijk membraan, mal ter vervaardiging van een dergelijk membraan, alsmede diverse scheidingssystemen omvattende een dergelijk membraan. |
| BR9707107A (pt) * | 1997-11-11 | 2000-05-09 | Univ Sao Paulo | Processo de obtenção de membranas porosas de diamante, respectivo dispositivo e produtos assim obtidos |
| ATE354430T1 (de) * | 1999-12-08 | 2007-03-15 | Baxter Int | Verfahren zur herstellung einer mikroporösen filtermembran |
| US6811612B2 (en) * | 2000-01-27 | 2004-11-02 | The University Of Chicago | Patterning of nanocrystalline diamond films for diamond microstructures useful in MEMS and other devices |
| US20030150791A1 (en) | 2002-02-13 | 2003-08-14 | Cho Steven T. | Micro-fluidic anti-microbial filter |
| US20050251267A1 (en) * | 2004-05-04 | 2005-11-10 | John Winterbottom | Cell permeable structural implant |
| DE10353894B4 (de) * | 2003-07-11 | 2007-02-15 | Nft Nanofiltertechnik Gmbh | Filterelement und Verfahren zu dessen Herstellung |
| US8025960B2 (en) * | 2004-02-02 | 2011-09-27 | Nanosys, Inc. | Porous substrates, articles, systems and compositions comprising nanofibers and methods of their use and production |
| JP2007536071A (ja) * | 2004-05-03 | 2007-12-13 | フリースランド・ブランズ・ビー・ヴイ | 担体上に膜を持つデバイス、そしてそのような膜を製造するための方法 |
| US20060062982A1 (en) * | 2004-09-17 | 2006-03-23 | Massachusetts Institute Of Technology | Carbon-polymer electrochemical systems and methods of fabricating them using layer-by-layer technology |
| US7435296B1 (en) * | 2006-04-18 | 2008-10-14 | Chien-Min Sung | Diamond bodies grown on SiC substrates and associated methods |
| DE102006026559A1 (de) | 2006-06-06 | 2007-12-20 | Eads Deutschland Gmbh | Mikromechanischer Filter für Mikropartikel, insbesondere für pathogene Bakterien und Viren, sowie Verfahren zu seiner Herstellung |
| US9403126B2 (en) * | 2007-01-10 | 2016-08-02 | The Regents Of The University Of Michigan | Ultrafiltration membrane, device, bioartificial organ, and related methods |
| US20090017258A1 (en) * | 2007-07-10 | 2009-01-15 | Carlisle John A | Diamond film deposition |
| WO2010085337A1 (en) * | 2009-01-21 | 2010-07-29 | Creatv Microtech, Inc. | Method of fabrication of micro and nanofilters |
-
2008
- 2008-07-31 DE DE200810035772 patent/DE102008035772B4/de not_active Expired - Fee Related
-
2009
- 2009-07-22 US US13/056,258 patent/US9028698B2/en not_active Expired - Fee Related
- 2009-07-22 WO PCT/EP2009/059449 patent/WO2010012643A1/de not_active Ceased
- 2009-07-22 EP EP09780946A patent/EP2307124A1/de not_active Withdrawn
Non-Patent Citations (4)
| Title |
|---|
| DATABASE INSPEC [online] THE INSTITUTION OF ELECTRICAL ENGINEERS, STEVENAGE, GB; 13 February 2008 (2008-02-13), MUKHERJI D ET AL: "Coating of meso-porous metallic membranes with oriented channel-like fine pores by pulsed laser deposition", Database accession no. 9969436 * |
| NANOTECHNOLOGY IOP PUBLISHING LTD. UK, vol. 19, no. 6, pages 065706 (8 PP.), ISSN: 0957-4484, DOI: 10.1088/0957-4484/19/6/065706 * |
| See also references of WO2010012643A1 * |
| THEIL J A: "DEEP TRENCH FABRICATION BY SI (110) ORIENTATION DEPENDENT ETCHING", JOURNAL OF VACUUM SCIENCE AND TECHNOLOGY: PART B, AVS / AIP, MELVILLE, NEW YORK, NY, US, vol. 13, no. 5, 1 September 1995 (1995-09-01), pages 2145 - 2147, XP000555619, ISSN: 1071-1023, DOI: 10.1116/1.588093 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010012643A1 (de) | 2010-02-04 |
| DE102008035772B4 (de) | 2015-02-12 |
| US20120125848A1 (en) | 2012-05-24 |
| US9028698B2 (en) | 2015-05-12 |
| DE102008035772A1 (de) | 2010-02-04 |
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