Browsing Waterloo Institute for Nanotechnology by Title
Now showing items 88-107 of 193
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Fluorescent sensors using DNA-functionalized graphene oxide
(Springer, 2014-07-02)In the past few years, graphene oxide (GO) has emerged as a unique platform for developing DNA-based biosensors, given the DNA adsorption and fluorescence-quenching properties of GO. Adsorbed DNA probes can be desorbed ... -
Friction and Adhesion of Microparticle Suspensions on Repellent Surfaces
(ACS, 2020-11-06)With the recent advancements in the development and application of repellent surfaces, both in air and under liquid medium, accurate characterization of repellence behavior is critical in understanding the mechanism behind ... -
Functional nucleic acids for detecting bacteria
(De Gruyter, 2013-01-31)Bacterial infection represents one of the leading causes of disease and death, and as such, bacterial detection is an important step in managing infectious diseases. The current protocol requires growing cell cultures, ... -
G-Quadruplex DNA for Fluorescent and Colorimetric Detection of Thallium(I)
(American Chemical Society, 2016-02-26)Thallium is a highly toxic heavy metal, but its 495 nm FRET sensing is underexplored compared to its neighboring elements Blue in the periodic table: lead and mercury. Thallium has two " oxidation states. A DNAzyme-based ... -
Glutathione-s-transferase modified electrodes for detecting anticancer drugs
(Elsevier, 2014-03-07)With the fast growth of cancer research, new analytical methods are needed to measure anticancer drugs. This is usually accomplished by using sophisticated analytical instruments. Biosensors are attractive candidates for ... -
Gold nanoparticles as dehydrogenase mimicking nanozymes for estradiol degradation
(Elsevier, 2019-09)Nanozyme catalysis has been mainly focused on a few chromogenic and fluorogenic substrates, while environmentally and biologically important compounds need to be tested to advance the field. In this work, we studied oxidation ... -
The group trend of lanthanides binding to DNA and DNAzymes with a complex but symmetric pattern
(Royal Society of Chemistry, 2014-07-18)Using sensitized Tb3+ luminescence spectroscopy as a tool, binding of 14 lanthanides to a lanthanide-dependent DNAzyme is studied, where the binding affinity is symmetric across the series and the tightest binding occurs ... -
Hg2+ detection using a phosphorothioate RNA probe adsorbed on graphene oxide and a comparison with thymine-rich DNA
(Royal Society of Chemistry, 2016-06-21)Mercury is a highly toxic heavy metal and many DNA-based biosensors have been recently developed for Hg2+ detection in water. Among them, thymine-rich DNA is the most commonly used for designing Hg2+ sensors. However, the ... -
A highly specific sodium aptamer probed by 2-aminopurine for robust Na+ sensing
(Oxford University Press, 2016-09-20)Sodium is one of the most abundant metals in the environment and in biology, playing critical ecological and physiological roles. Na+ is also the most common buffer salt for nucleic acids research, while its specific ... -
Hillock-free and atomically smooth InSb QWs grown on GaAs substrates by MBE
(Elsevier, 2019-05-01)Comprehensive studies on the surface morphological evolution of AlInSb metamorphic buffers and InSb QWs grown on top were conducted as a function of the GaAs (0 0 1) substrate offcut angles. We confirmed our earlier ... -
Hydrodynamic shrinkage of liquid CO2 Taylor drops in a straight microchannel
(IOP Publishing, 2018-02-12)Hydrodynamic shrinkage of liquid CO2 drops in water under a Taylor flow regime is studied using a straight microchannel (length/width similar to 100). A general form of a mathematical model of the solvent-side mass transfer ... -
Hydrogel porosity controlling DNA-directed immobilization of gold nanoparticles revealed by DNA melting and scanning helium ion microscopy
(Royal Society of Chemistry, 2012-04-07)Immobilization of nanomaterials is important for many applications, including sensor development, biomaterials design and catalysis. DNA-directed immobilization has been widely used because of its high specificity and ... -
Hydrophobic and Elastic Forces Experienced by a Series of Pyrene End-Labeled Poly(ethylene oxide)s Interacting with Sodium Dodecyl Sulfate Micelles
(American Chemical Society, 2018-07-30)A series of pyrene end-labeled poly(ethylene oxide)s (Py2-PEO(x) with x equal to 2, 3.4, 5, 6, 7.8, and 10 kg mol–1) were synthesized, and their interactions with SDS micelles were characterized by steady-state and ... -
Immobilization of DNA on Magnetic Microparticles for Mercury Enrichment and Detection with Flow Cytometry
(Wiley, 2011-04-26)Mercury detection in water has attracted a lot of research interest due to its highly toxic nature and adverse environmental impact. In particular, the recent discovery of specific binding of HgII to thymine-rich (T-rich) ... -
Immunogenicity and antitumor activity of the superlytic λF7 phage nanoparticles displaying a HER2/neu-derived peptide AE37 in a tumor model of BALB/c mice
(Elsevier, 2018-06-28)Phage display technique has been increasingly researched for vaccine design and delivery strategies in recent years. In this study, the AE37 (Ii-Key/HER-2/neu 776–790) peptide derived from HER2 (human epidermal growth ... -
Improved performance of the rechargeable hybrid aqueous battery at near full state-of-charge
(Elsevier, 2018-05-01)For the first time, a green lignin/silica nanocomposite (LSC) is introduced to the rechargeable hybrid aqueous Zn/LiMn2O4 battery (ReHAB) as additive in the cathode formulation. Lignin acts as a key role to regulate and ... -
Improving molecularly imprinted nanogels by pH modulation
(Royal Society of Chemistry, 2015-10-16)Molecularly imprinted polymers (MIPs) are polymerized in the presence of a template molecule. After removing the template, the polymer scaffold can selectively rebind the template. The imprinting factor (IF) refers to the ... -
In Vitro Selection in Serum: RNA-Cleaving DNAzymes for Measuring Ca2+ and Mg2+
(American Chemical Society, 2016-05-27)RNA-cleaving DNAzymes have been attempted as in vivo analytical probes and gene silencing reagents over the past two decades. Despite progress already achieved, concerns still exist regarding the activity of DNAzymes in ... -
In Vitro Selection of a DNAzyme Cooperatively Binding Two Lanthanide Ions for RNA Cleavage
(American Chemical Society, 2016-05-03)Trivalent lanthanide ions (Ln(3+)) were recently employed to select RNA-cleaving DNAzymes, and three new DNAzymes have been reported so far. In this work, dysprosium (Dy3+) was used with a library containing 50 random ... -
In Vitro Selection of a New Lanthanide-Dependent DNAzyme for Ratiometric Sensing Lanthanides
(American Chemical Society, 2014-10-07)Developing biosensors for lanthanides is an important but challenging analytical task. To address this problem, in vitro selection of RNA-cleaving DNAzymes was carried out using a library containing a region of 35 random ...