An electron conductive matrix, or collector, facilitates electron transport in an electrochemical device. It is stationary and does not change during the entire operation once it is built. The interface of this matrix and an electrode is constructed at a 2D level at the micro‐scale, and naturally limits the breadth and depth of electrochemical reactions. Herein, the idea of an enhanced electrode coupled with a conducting molecule that can extend interfacial reactions is first introduced. With a spatialized interspace, this electrode can change the present understanding of the electrode process and opens up a new realm of electrode‐based reaction chemistry. A lithium–sulfur (Li–S) battery is used as the target for implementing the enhanced electrode owing to the complex multi‐electron reaction. Through the interaction of π–π stacking between graphite‐based carbon and iron (II) phthalocyanine (FePc), soluble FePc can be decorated on the surface of an electrode that has the capability of transporting electrons. The scanning tunneling microscope break junction characterization and density functional theory indicate that FePc has a strong molecular electronic conductivity. The reactants obtain electrons more easily from the conducting molecule than from the collector directly. As a result, the performance of the corresponding Li–S battery considerably improves.
The influence of intra-cavity propagation delay in message encoding and decoding using chaotic semiconductor lasers is numerically investigated. A message is encoded at the transmitter laser by a chaos shift keying scheme and is decoded at the receiver by comparing its output with the transmitter laser. The requisite intra-cavity propagation delay in achieving synchronization of optical chaos is estimated by cross-correlation analysis between the transmitter and receiver lasers’ output. The effect of intra-cavity propagation delay on the message recovery has been analyzed from the bit error rate performance. It is found that despite the intra-cavity propagation delay magnitude being less, it has an impact on the quality of message recovery. We also examine the dependency of injection rate, frequency detuning, modulation depth and bit rate on intra-cavity propagation delay and associated message recovery quality. We found that the communication performance has been adequately improved after incorporating intra-cavity propagation delay correction in the synchronization system.
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