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A novel strategy for improving amperometric biosensor sensitivity using dual-signal synergistic effect for ultrasensitive detection of matrix metalloproteinase-2
10.1016/j.snb.2018.03.119 2018-03-21 A new strategy for effectively improving sensitivity of amperometric biosensor based on dual-signal synergistic effect has been developed. Reduced graphene oxide-Au-poly(methylene blue) (rGO-Au-PMB) as a novel redox species with strong current signal at −0.18... |
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Detection of triethylamine with fast response by Al2O3/α-Fe2O3 composite nanofibers
10.1016/j.snb.2018.03.122 2018-03-21 Pure α-Fe2O3 nanotubes and a series of Al2O3/α-Fe2O3 composite nanofibers were synthesized via facile electrospinning and subsequent calcination at 500 °C in air for 2 h. The morphologies and nanostructures of these samples were characterized through various ... |
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A Simple and Compact Smartphone-Based Device for the Quantitative Readout of Colloidal Gold Lateral Flow Immunoassay Strips
10.1016/j.snb.2018.03.110 2018-03-20 Colloidal gold lateral flow immunoassay strips (AuNPs-LFIS) have been widely applied as qualitative diagnostic tools for point-of-care tests (POCT). If strip readers were incorporated, their use could be extended to quantitative analysis. However, their cost ... |
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One-step electrodeposition of high-quality amorphous molybdenum sulfide/RGO photoanode for visible-light sensitive photoelectrochemical biosensing
10.1016/j.snb.2018.03.117 2018-03-20 Exploiting high-quality photoactive material with visible light absorption, high photoelectrochemical (PEC) activity and stability is of great importance for developing high-performance PEC sensing. In this paper, amorphous molybdenum sulfide (a-MoSx)/reduced... |
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Enhanced gas sensing properties of monodisperse Zn2SnO4 octahedron functionalized by PdO nanoparticals
10.1016/j.snb.2018.03.121 2018-03-20 In this work, Zn2SnO4 microstructures functionalized with PdO nanoparticles were successfully synthesized combination a facile one-step hydrothermal method and subsequent wet impregnation treatment. X-ray diffraction (XRD), field-emission scanning electron mi... |
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The development of radio frequency magnetron sputtered p-type nickel oxide thin film field-effect transistor device combined with nucleic acid probe for ultrasensitive label-free HIV-1 gene detection
10.1016/j.snb.2018.03.111 2018-03-20 Sensitive, selective and inexpensive human immunodeficiency virus (HIV) diagnostics are urgently needed for early diagnosis and monitoring of the HIV. We developed a novel label free liquid-ion gated field-effect transistor (FET)-type biosensor for HIV-1 gene... |
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Multicolor sensor for organophosphorus pesticides determination based on the bi-enzyme catalytic etching of gold nanorods
10.1016/j.snb.2018.03.023 2018-03-20 Compared with optical density variations, human eyes are more sensitive to color variations. Herein, we develop a multicolor biosensor for organophosphorus pesticides (OPs) detection based on the enzymatic etching of gold nanorods (AuNRs). In the presence of ... |
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Rolling circle amplification triggered poly adenine-gold nanoparticles production for label-free electrochemical detection of thrombin
10.1016/j.snb.2018.03.112 2018-03-20 We developed a novel label-free strategy for electrochemical detection thrombin based on rolling circle amplification (RCA) triggering poly adenine production for adsorption gold nanoparticles (AuNPs). In this assay, the aptamer 1 was first immobilized on the... |
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Highly selective chemosensor for the detection of Ru3+ ion by fluorescent turn-on response and its bioimaging recognition in living cells
10.1016/j.snb.2018.03.077 2018-03-20 Functionalized phenanthridine based probe has been rationally designed and synthesized. 1H & 13NMR, X-ray photoelectron spectra and HRMS were conducted to characterize and prove its structure. The probe exhibited fluorogenic selectivity to detection of Ru3+ a... |
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Shape-controllable Synthesis of Silica Coated Core/Shell Upconversion Nanomaterials and Rapid Imaging of Latent Fingerprints
10.1016/j.snb.2018.03.084 2018-03-20 Upconversion nanomaterials with complex morphologies have attracted considerable interests due to morphology-dependent properties. In this work, silica coated-NaYF4 upconversion nanomaterials (NaYF4@SiO2) of various shapes – nanorods, nanodumbbell and nanowir... |