An aptamer-based keypad lock system

Abstract

An aptamer-based security system mimicking keypad lock function was successfully designed. The system was turned "ON" with a strong fluorescent output signal only when the inputs were added according to the correct combination and exact sequence. Otherwise, the system was kept "OFF" to prevent illegal access.

Degree-Based Topological Indices

“…Usually, results of this kind are established for some specified class of (molecular) graphs. We quote here only some most recent works of this kind, [59][60][61][62][63][64][65] in which references to earlier studies can be found. Numerous papers on Zagreb indices are appearing also in mathematical journals; see the recent articles [66][67][68][69][70] and the references cited therein.…”

Aptamer-based biosensor for label-free detection of ethanolamine by electrochemical impedance spectroscopy

“…All experiments were performed at room temperature. indicative of parallel K + -stabilized G-quadruplex [32,33]. The results demonstrated that the presence K + could induce the hairpin Ap-DNA structural change, forming K + -stabilized G-quadruplex.…”

Honeycomb-alumina supported garnet membrane: Composite electrolyte with low resistance and high strength for lithium metal batteries

“…(4) In operation, the catholyte circulates at a constant flow rate of 10 mL min À1 . The performance of the cell was tested and compared to that of the cells with the LLZTO and LTAP sheet [19]. In Fig.…”

“…It can be concluded that, the honeycomb-Al 2 O 3 supporter greatly increases the mechanical strength of the LLZTO membrane; such a composite design eliminates the concern over the membrane's fragility in applications, and furthermore, may allow a stack pressure between the composite electrolyte and the lithium anode, which can increase lithium cycling efficiency [24,25], however, further research is required to clarify. Impedance spectroscopy measurement was carried out on the composite electrolyte pellet, and the result was compared with those of the LLZTO and LTAP sheet reported in our former paper [19]. In a typical measurement, two 2 M LiCl solutions were separated by the ceramic electrolyte, and two flat Pt electrodes (1 Â 1 cm 2 ) were placed into these LiCl solutions symmetrically [26].…”

“…To this end, ceramic electrolytes are usually applied as thin sheets in the LMBs. For instance, the widely used commercial LTAP sheet has a thickness of only 150 mm [2,17,18], and the LLZTO sheet used in our former work was 200 mm thick [19].…”