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Verdonck FAM, Van Assche F, Hicks K, Mertens J, Voigt A, Verougstraete V. Development of realistic environmental release factors based on measured data: approach and lessons from the EU metal industry. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2014; 10:529-538. [PMID: 24944185 DOI: 10.1002/ieam.1554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Revised: 02/03/2014] [Accepted: 06/09/2014] [Indexed: 06/03/2023]
Abstract
The assessment of environmental exposure and risks associated with the production or use of a substance on an industrial site includes the estimation of the releases to the environment. In the absence of measured release data on the specific substance, a risk assessor would rely on default release factors to the environmental compartments as developed in international, national, or regional context. Because a wide variety of substances, processes, and uses has to be covered, default release factors are as a rule conservative, usually leading to significant overprediction of releases and hence to overpredicted environmental exposure concentrations and risks. In practice, unrealistic and worst-case predictions do not support a more efficient management of releases and risk. The objective of this article is to propose a more realistic approach to characterize the environmental releases from manufacture, processing, and downstream uses of the metals and their compounds. Although developed in the European Union (EU), this approach can also be used in other regions and in other chemical management systems addressing metals. A database consisting of more than 1300 recent (1993-2010), site-specific measured release factors to air and water of 18 different metals from various EU Member States was compiled and used to calculate average and reasonable worst-case release factors for multiple metal manufacture and industrial use processes. The parameters influencing releases to water were found to depend predominantly on life cycle step (manufacture and/or use), the sector and/or the solid-water partition coefficient (K(d)). The release factors can be used as advanced tier instrument in environmental safety assessments, increasing the realism of the estimates while still keeping a sufficient level of conservatism.
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Sadykov VA, Eremeev NF, Sadovskaya EM, Bobin AS, Fedorova YE, Muzykantov VS, Mezentseva NV, Alikina GM, Kriger TA, Belyaev VD, Rogov VA, Ulikhin AS, Okhlupin YS, Uvarov NF, Bobrenok OF, McDonald N, Watton J, Dhir A, Steinberger-Wilckens R, Mertens J, Vinke IC. Cathodic materials for intermediate-temperature solid oxide fuel cells based on praseodymium nickelates-cobaltites. RUSS J ELECTROCHEM+ 2014. [DOI: 10.1134/s1023193514070131] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Valev VK, Baumberg JJ, De Clercq B, Braz N, Zheng X, Osley EJ, Vandendriessche S, Hojeij M, Blejean C, Mertens J, Biris CG, Volskiy V, Ameloot M, Ekinci Y, Vandenbosch GAE, Warburton PA, Moshchalkov VV, Panoiu NC, Verbiest T. Nonlinear superchiral meta-surfaces: tuning chirality and disentangling non-reciprocity at the nanoscale. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:4074-81. [PMID: 24740481 PMCID: PMC4173128 DOI: 10.1002/adma.201401021] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Indexed: 05/27/2023]
Abstract
Circularly polarized light is incident on a nanostructured chiral meta-surface. In the nanostructured unit cells whose chirality matches that of light, superchiral light is forming and strong optical second harmonic generation can be observed.
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Bobbaers D, Mertens J, Linden P. Session francobelge–système des conventions de réadaptation. Ann Phys Rehabil Med 2013. [DOI: 10.1016/j.rehab.2013.07.652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Linden P, Mertens J, Bobbaers D. Organisation and financing by nomenclature of PRM in Belgium. Ann Phys Rehabil Med 2013. [DOI: 10.1016/j.rehab.2013.07.658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bobbaers D, Mertens J, Linden P. Session francobelge–convention systems in rehabilitation. Ann Phys Rehabil Med 2013. [DOI: 10.1016/j.rehab.2013.07.659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Linden P, Mertens J, Bobbaers D. Organisation et financement par nomenclature de la MPR en Belgique. Ann Phys Rehabil Med 2013. [DOI: 10.1016/j.rehab.2013.07.651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Töx U, Schumacher B, Toermer T, Terheggen G, Mertens J, Holzapfel B, Lehmacher W, Goeser T, Neuhaus H. Propofol sedation for colonoscopy with a new ultrathin or a standard endoscope: a prospective randomized controlled study. Endoscopy 2013; 45:439-44. [PMID: 23468196 DOI: 10.1055/s-0032-1326270] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
BACKGROUND AND STUDY AIMS The majority of colonoscopies in Germany are performed under conscious sedation. Previous studies reported that pediatric colonoscopes reduce the demand for sedative drugs and may improve cecal intubation. The aim of this study was to compare a new ultrathin and a standard colonoscope in terms of propofol demand during colonoscopy. PATIENTS AND METHODS A total of 203 patients were prospectively randomized to undergo colonoscopy with either a 9.5-mm ultrathin (UTC) colonoscope or a standard colonoscope of variable stiffness. Initially, 40 or 60 mg of propofol were administered according to body weight, followed by bolus injections of 20 mg as deemed necessary. Propofol was administered by a separate physician who was blinded to the endoscope used. Sedation levels were defined according to guidelines; pain and complaints were recorded on a numeric rating scale. RESULTS Significantly less propofol was required to reach the cecum with the UTC (adjusted mean 94.9 mg [95 % confidence interval (CI) 85.7 - 105.0] vs. 115.3 mg [95 %CI 105.8 - 124.7]; P = 0.003). The level of sedation and pain score were lower with the UTC (sedation level 1 76 % vs. 61 %; P = 0.003; pain score adjusted mean 2.0 [95 %CI 1.7 - 2.4] vs. 2.8 [95 %CI 2.5 - 3.1]; P = 0.001). The rate of ileal and cecal intubation, time to reach the cecum, number of external compressions, withdrawal time, polyp and adenoma detection rate, and patient satisfaction were not different between the two colonoscopes. The time to intubate the ileum was longer with the UTC (1.73 minutes [95 %CI 1.42 - 2.04] vs. 1.22 minutes [95 %CI 0.91 - 1.52]; P = 0.020). CONCLUSIONS Use of a new ultrathin colonoscope was associated with reduced propofol consumption, lower patient sedation levels, and less pain than the standard colonoscope, but ileal intubation time was longer.
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Mertens J, Dankwardt S, Kislich M. Das Hessische Kindersprachscreening (KiSS) - „medizinische Auffälligkeit“, Betrachtung von Einflussfaktoren. DAS GESUNDHEITSWESEN 2013. [DOI: 10.1055/s-0033-1337577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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De Bruyne S, Van Damme N, Smeets P, Ferdinande L, Ceelen W, Mertens J, Van de Wiele C, Troisi R, Libbrecht L, Laurent S, Geboes K, Peeters M. Value of DCE-MRI and FDG-PET/CT in the prediction of response to preoperative chemotherapy with bevacizumab for colorectal liver metastases. Br J Cancer 2012; 106:1926-33. [PMID: 22596235 PMCID: PMC3388560 DOI: 10.1038/bjc.2012.184] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Background: The purpose of this study was to assess the role of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) and 18F-fluorodeoxyglucose positron emission tomography computed tomography (FDG-PET/CT) for evaluation of response to chemotherapy and bevacizumab and for prediction of progression-free survival (PFS) in patients with metastatic colorectal cancer (mCRC) with potentially resectable liver lesions. Methods: A total of 19 mCRC patients were treated with FOLFOX/FOLFIRI and bevacizumab followed by surgery. Dynamic contrast-enhanced magnetic resonance imaging and FDG-PET/CT were performed before treatment and after cycle 5. PET results were quantified by calculating maximum standardised uptake value (SUVmax) whereas area under the enhancement curve (AUC), initial AUC (iAUC) and the endothelial transfer constant (Ktrans) were used to quantify DCE-MRI. Pathological analysis of the resection specimen was performed, including measurement of microvessel density (MVD) and proliferation index. Results: Both AUC and iAUC were significantly decreased following bevacizumab therapy (median change of 22% (P=0.002) and 40% (P=0.001) for AUC and iAUC, respectively). Progression-free survival benefit was shown for patients with >40% reduction in Ktrans (P=0.019). In the group of radiological responders, the median baseline SUVmax was 3.77 (IQR: 2.88–5.60) compared with 7.20 (IQR: 4.67–8.73) in nonresponders (P=0.021). A higher follow-up SUVmax was correlated with worse PFS (P=0.012). Median MVD was 10.9. Progression-free survival was significantly shorter in patients with an MVD greater than 10, compared with patients with lower MVD (10 months compared with 16 months, P=0.016). Conclusion: High relative decrease in Ktrans, low follow-up SUVmax and low MVD are favourable prognostic factors for mCRC patients treated with bevacizumab before surgery.
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Mertens J, Boumon R, Steegmans P. Synthesis and Cu1+ Assisted radiosynthesis of 2-radioiodo phloretinic acid, a potential glut tracer. J Labelled Comp Radiopharm 2012. [DOI: 10.1002/jlcr.25804401334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Dumas C, Petrig J, Schibli R, Stahel J, Schubiger PA, Spadola L, Scapozza L, Mertens J. Functionalization of glucose for the labeling with 99mTc-tricarbonyl. J Labelled Comp Radiopharm 2012. [DOI: 10.1002/jlcr.2580440120] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Mertens J, Iterbeke K, Lahoutte T, Joos C, Tourwé D, Bossuyt A. L-[2-RADIOIODO]-Tyrosine a potential tumour tracer for spect. Radiosynthesis, in vitro and in vivo evaluation. J Labelled Comp Radiopharm 2012. [DOI: 10.1002/jlcr.25804401302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Eersels JLH, Mertens J, Herscheid JDM. New insights into the Cu+-assisted nucleophilic radioiodination of bromopyridine and iodopyridine analogues. J Labelled Comp Radiopharm 2012. [DOI: 10.1002/jlcr.2908] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Mertens J, Bodensohn A, Dankwardt S, Ernst H, Haberer W, Dürr KG, Hock S, Holler-Zittlau I, Merbs R, Neumann A, Riquelme-Burgos K, Kieslich M. Das Hessische Kindersprachscreening (KiSS) - Vorstellung eines Datenerfassungs- und Auswertungskonzeptes. DAS GESUNDHEITSWESEN 2012. [DOI: 10.1055/s-0032-1307374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Neumann A, Bodensohn A, Dankwardt S, Dürr KG, Ernst H, Haberer W, Hock S, Holler-Zittlau I, Merbs R, Mertens J, Riquelme-Burgos K, Kieslich M. Zielsetzung der Versorgungsstudie zum Hessischen Kindersprachscreening (KiSS). DAS GESUNDHEITSWESEN 2012. [DOI: 10.1055/s-0032-1307376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Bodensohn A, Dankwardt S, Dürr KG, Ernst H, Haberer W, Hock S, Holler-Zittlau I, Merbs R, Mertens J, Neumann A, Riquelme-Burgos K, Kieslich M. Die Relation von Auffälligkeiten zur (Mehr-)Sprachigkeit beim Hessischen Kindersprachscreening (KiSS). DAS GESUNDHEITSWESEN 2012. [DOI: 10.1055/s-0032-1307375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Lambert B, Mertens J, Dhondt E, Seinstra B, Smits M, Colle I, van Vlierberghe H, Troisi R, Defreyne L. Abstract No. 199: Hepatocellular carcinoma (HCC) treatment with radiolabelled lipiodol embolization versus ytrrium-90 radioembolization: comparative survival analysis. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Hock S, Mertens J, Kieslich M. Kindergesundheitsschutz in Hessen. DAS GESUNDHEITSWESEN 2012. [DOI: 10.1055/s-0032-1307372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Mertens J, Bodensohn A, Garberg J, Hock S, Holler-Zittlau I, Neumann A, Praschak R, Riquelme-Burgos K, Weber JE, Kieslich M. Das Hessische Kindersprachscreening (KiSS). DAS GESUNDHEITSWESEN 2011. [DOI: 10.1055/s-0031-1300927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Van Damme N, De Bruyne S, Mertens J, Van de Wiele C, Ceelen WP, Smeets P, Ferdinande L, Laurent S, Geboes K, Peeters M. An evaluation of FDG-PET as a predictor of metabolic response to chemotherapy in metastatic colorectal cancer patients (mCRC). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e14057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Mertens J, Terriere D, Bossuyt A, Bossuyt-Piron C. 4-123I - spiperone of high purity and high specific activity. A suitable tracer for imaging dopamine receptor sites in baboon brains with spect. J Labelled Comp Radiopharm 2011. [DOI: 10.1002/jlcr.2580260159] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ruyters S, Mertens J, Vassilieva E, Dehandschutter B, Poffijn A, Smolders E. The red mud accident in ajka (hungary): plant toxicity and trace metal bioavailability in red mud contaminated soil. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2011; 45:1616-22. [PMID: 21204523 DOI: 10.1021/es104000m] [Citation(s) in RCA: 120] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The red mud accident of October 4, 2010, in Ajka (Hungary) contaminated a vast area with caustic, saline red mud (pH 12) that contains several toxic trace metals above soil limits. Red mud was characterized and its toxicity for plants was measured to evaluate the soil contamination risks. Red mud radioactivity (e.g., (238)U) is about 10-fold above soil background and previous assessments revealed that radiation risk is limited to indoor radon. The plant toxicity and trace metal availability was tested with mixtures of this red mud and a local noncontaminated soil up to a 16% dry weight fraction. Increasing red mud applications increased soil pH to maximally 8.3 and soil solution EC to 12 dS m(-1). Shoot yield of barley seedlings was affected by 25% at 5% red mud in soil and above. Red mud increased shoot Cu, Cr, Fe, and Ni concentrations; however, none of these exceed toxic limits reported elsewhere. Moreover, NaOH amended reference treatments showed similar yield reductions and similar changes in shoot composition. Foliar diagnostics suggest that Na (>1% in affected plants) is the prime cause of growth effects in red mud and in corresponding NaOH amended soils. Shoot Cd and Pb concentrations decreased by increasing applications or were unaffected. Leaching amended soils (3 pore volumes) did not completely remove the Na injury, likely because soil structure was deteriorated. The foliar composition and the NaOH reference experiment allow concluding that the Na salinity, not the trace metal contamination, is the main concern for this red mud in soil.
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Ore S, Mertens J, Brandt KK, Smolders E. Copper toxicity to bioluminescent Nitrosomonas europaea in soil is explained by the free metal ion activity in pore water. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2010; 44:9201-9206. [PMID: 21047118 DOI: 10.1021/es1026294] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The terrestrial biotic ligand model (BLM) for metal toxicity in soil postulates that metal toxicity depends on the free metal ion activity in solution and on ions competing for metal sorption to the biotic ligand. Unequivocal evidence for the BLM assumptions is most difficult to obtain for native soil microorganisms because the abiotic and biotic compartments cannot be experimentally separated. Here, we report copper (Cu) toxicity to a bioluminescent Nitrosomonas europaea reporter strain that was used in a solid phase-contact assay and in corresponding soil extracts and artificial soil solutions. The Cu(2+) ion activities that halve bioluminescence (EC50) in artificial solutions ranged 10(-5) to 10(-7) M and increased with increasing activities of H(+), Ca(2+) and Mg(2+) according to the BLM concept. The solution based Cu(2+) EC50 values of N. europaea in six contaminated soils ranged 2 × 10(-6) to 2 × 10(-9) M and these thresholds for both solid phase or soil extract based assays were well predicted by the ion competition model fitted to artificial solution data. In addition, solution based Cu(2+) EC50 of the solid phase-contact assay were never smaller than corresponding values in soil extracts suggesting no additional solid phase toxic route. By restricting the analysis to the same added species, we show that the Cu(2+) in solution represents the toxic species to this bacterium.
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Martínez NF, Kosaka PM, Tamayo J, Ramírez J, Ahumada O, Mertens J, Hien TD, Rijn CV, Calleja M. High throughput optical readout of dense arrays of nanomechanical systems for sensing applications. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2010; 81:125109. [PMID: 21198053 DOI: 10.1063/1.3525090] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
We present an instrument based on the scanning of a laser beam and the measurement of the reflected beam deflection that enables the readout of arrays of nanomechanical systems without limitation in the geometry of the sample, with high sensitivity and a spatial resolution of few micrometers. The measurement of nanoscale deformations on surfaces of cm(2) is performed automatically, with minimal need of user intervention for optical alignment. To exploit the capability of the instrument for high throughput biological and chemical sensing, we have designed and fabricated a two-dimensional array of 128 cantilevers. As a proof of concept, we measure the nanometer-scale bending of the 128 cantilevers, previously coated with a thin gold layer, induced by the adsorption and self-assembly on the gold surface of several self-assembled monolayers. The instrument is able to provide the static and dynamic responses of cantilevers with subnanometer resolution and at a rate of up to ten cantilevers per second. The instrumentation and the fabricated chip enable applications for the analysis of complex biological systems and for artificial olfaction.
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