Abstract: The present disclosure relates to a cooking device and a control method thereof and, more specifically, a cooking device using heat, such as an oven, and a control method thereof.

Abstract: Disclosed are a selective colorimetric detection sensor and a colorimetric detection method for C6+ ions using size controlled label-free gold nanoparticles, which may be useful for the detection of toxic materials such as heavy metal ions in the environmental sector and the industry. Selective colorimetric sensor solution used therein is selectively reacted with only Cr6+ ions in trivalent chromium ions (Cr3+) and hexavalent chromium ions (Cr6+), and there is no interference effect resulting from other metal ions, and it is possible to very rapidly and precisely detect Cr6+ ions compared to the related art.

Abstract: Disclosed are a colorimetric detection sensor and colorimetric detection method of a cyanide anion (CN?) by etching of gold nanorods. The colorimetric detection sensor and colorimetric detection method use label-free nanorods having no modifier attached to a surface of gold nanorods (AuNRs), wherein the aspect ratio of nanorods, pH condition and/or amount of a surfactant are controlled to carry out selective etching and to cause a change in color only by CN? so that CN? contained or dissolved in poison, water-contaminated environmental samples and legal evidence samples may be detected with ease, and show excellent selectivity, sensitivity and quantitative analyzability to CN? to provide high usefulness.

Abstract: Disclosed are a colorimetric detection sensor and colorimetric detection method of a cyanide anion (CN?) by etching of gold nanorods. The colorimetric detection sensor and colorimetric detection method use label-free nanorods having no modifier attached to a surface of gold nanorods (AuNRs), wherein the aspect ratio of nanorods, pH condition and/or amount of a surfactant are controlled to carry out selective etching and to cause a change in color only by CN? so that CN? contained or dissolved in poison, water-contaminated environmental samples and legal evidence samples may be detected with ease, and show excellent selectivity, sensitivity and quantitative analyzability to CN? to provide high usefulness.

Abstract: Disclosed are a selective colorimetric detection sensor and a colorimetric detection method for C6+ ions using size controlled label-free gold nanoparticles, which may be useful for the detection of toxic materials such as heavy metal ions in the environmental sector and the industry. Selective colorimetric sensor solution used therein is selectively reacted with only Cr6+ ions in trivalent chromium ions (Cr3+) and hexavalent chromium ions (Cr6+), and there is no interference effect resulting from other metal ions, and it is possible to very rapidly and precisely detect Cr6+ ions compared to the related art.