High efficiency carbon nanotube thread antennas

Although previous research has explored the underlying theory of high-frequency behavior of carbon nanotubes (CNTs) and CNT bundles for antennas, there is a gap in the literature for direct experimental measurements of radiation efficiency. These measurements are crucial for any practical application of CNT materials in wireless communication. In this letter, we report a measurement technique to accurately characterize the radiation efficiency of λ/4 monopole antennas made from the CNT thread. We measure the highest absolute values of radiation efficiency for CNT antennas of any type, matching that of copper wire. To capture the weight savings, we propose a specific radiation efficiency metric and show that these CNT antennas exceed copper's performance by over an order of magnitude at 1 GHz and 2.4 GHz. We also report direct experimental observation that, contrary to metals, the radiation efficiency of the CNT thread improves significantly at higher frequencies. These results pave the way for practical applications of CNT thread antennas, particularly in the aerospace and wearable electronics industries where weight saving is a priority

Moving beyond binary opposition: exploring the tapestry of gender in consumer research and marketing

The last two decades have seen an exponential growth in research pertaining to gender issues in marketing and consumer research. This special issue of Marketing Theory, together with the ongoing Association for Consumer Research Gender, Marketing and Consumer Research conference series, now approaching its tenth iteration, demonstrates the continued interest in gender issues in our disciplines. Introducing the special issue, this paper’s remit is threefold: it maps the substantive and theoretical developments of gender research within our discipline; it locates this work on gender within its broader context in humanities and social science; and it introduces the reader to the four papers in this special issue. The paper concludes that gender research has moved from the margins to become a strong body of work within marketing and consumer research. That said, there remains substantive opportunity for further development, where gender and feminist research can offer new insights, critiques, theories and approaches