A wireless pH sensor based on the use of salt-independent micro-scale polymer spheres

Ruan, Chuanmin; Ong, Keat Ghee; Mungle, Casey; Paulose, Maggie; Nickl, Nicholas; Grimes, Craig A.

doi:10.1016/s0925-4005(03)00486-6

Cited by 51 publications

(24 citation statements)

References 41 publications

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“…Ruan et al (2003) reported a linear operating range of pH 3 to pH 9 with these thick-film coated sensors, independent of the present salt concentration. It is questionable, however, if these sensors would work reliably over several days in the automated setup and if they could be made available in a parallel composition feasible for integration on the robot's worktable.…”

Section: Parallel Ph Measurementmentioning

confidence: 59%

Scale-down and parallel operation of the riboflavin production process with Bacillus subtilis

Knorr

Schlieker²,

Hohmann³

et al. 2007

Biochemical Engineering Journal

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Section: Parallel Ph Measurementmentioning

confidence: 59%

Scale-down and parallel operation of the riboflavin production process with Bacillus subtilis

Knorr

Schlieker²,

Hohmann³

et al. 2007

Biochemical Engineering Journal

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“…The dashed lines signify the threshold velocities of 0.11 and 0.17 m/s for the artificial surfaces for the two sizes of water droplets, respectively. nity due to their wide variety of potential applications, including micro/nanofluidics, 46 "lab-onchip" devices, 47 controllable drug delivery, 48 enzyme immobilization, 49 bioseparation, 50 cell sheet engineering, 51 sensor development, 52 energy and green engineering, 53 antifouling, 54 and selfcleaning surfaces. These surfaces are able to reversibly switch 55 their hydrophobicity/ hydrophilicity in response to external stimuli such as temperature, 56 pH, 57 photon energy, 58,59 electric 60 or magnetic 61 fields, humidity, 62 and electrochemical 63 and chemical treatments.…”

Section: B Stimuli-responsive/smart Surfacesmentioning

confidence: 99%

Biomimetic micro/nanostructured functional surfaces for microfluidic and tissue engineering applications

2011

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1 This paper reviews our work on the application of ultrafast pulsed laser micro/ nanoprocessing for the three-dimensional ͑3D͒ biomimetic modification of materials surfaces. It is shown that the artificial surfaces obtained by femtosecond-laser processing of Si in reactive gas atmosphere exhibit roughness at both micro-and nanoscales that mimics the hierarchical morphology of natural surfaces. Along with the spatial control of the topology, defining surface chemistry provides materials exhibiting notable wetting characteristics which are potentially useful for open microfluidic applications. Depending on the functional coating deposited on the laser patterned 3D structures, we can achieve artificial surfaces that are ͑a͒ of extremely low surface energy, thus water-repellent and self-cleaned, and ͑b͒ responsive, i.e., showing the ability to change their surface energy in response to different external stimuli such as light, electric field, and pH. Moreover, the behavior of different kinds of cells cultured on laser engineered substrates of various wettabilities was investigated. Experiments showed that it is possible to preferentially tune cell adhesion and growth through choosing proper combinations of surface topography and chemistry. It is concluded that the laser textured 3D micro/ nano-Si surfaces with controllability of roughness ratio and surface chemistry can advantageously serve as a novel means to elucidate the 3D cell-scaffold interactions for tissue engineering applications.

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“…Environment-responsive microgels have attracted great interests from both therapeutical and biotechnological fields in recent years [1,2], due to their versatile applications such as drug delivery systems [3], bioseparation [1], gene carriers [4], sensors [5], and so on. The microgels are capable of changing their physical-chemical properties and colloidal properties in response to changes in environmental conditions, alone or in combination, including temperature [6][7][8][9][10], pH [11][12][13][14], and magnetic field [15].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of novel cationic pH-responsive poly(N,N′-dimethylamino ethyl methacrylate) microgels

Chu

Yang

et al. 2007

Journal of Colloid and Interface Science

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A wireless pH sensor based on the use of salt-independent micro-scale polymer spheres

Cited by 51 publications

References 41 publications

Scale-down and parallel operation of the riboflavin production process with Bacillus subtilis

Scale-down and parallel operation of the riboflavin production process with Bacillus subtilis

Biomimetic micro/nanostructured functional surfaces for microfluidic and tissue engineering applications

Preparation and characterization of novel cationic pH-responsive poly(N,N′-dimethylamino ethyl methacrylate) microgels

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