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"Lerner, Mitchell"
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The Cold War at home and abroad : domestic politics and US foreign policy since 1945
\"In The Cold War at Home and Abroad, editors Andrew L. Johns and Mitchell B. Lerner bring together eleven essays that reflect the growing methodological diversity that has transformed the field over the past twenty years. The contributors examine a spectrum of diverse domestic factors and their influence on the history of US foreign relations since 1945, ranging from elections and Congress's influence on policy to the role of religion and regionalism\"-- Provided by publisher.
Book
Digital Biosensing by Foundry-Fabricated Graphene Sensors
The prevailing philosophy in biological testing has been to focus on simple tests with easy to interpret information such as ELISA or lateral flow assays. At the same time, there has been a decades long understanding in device physics and nanotechnology that electrical approaches have the potential to drastically improve the quality, speed, and cost of biological testing provided that computational resources are available to analyze the resulting complex data. This concept can be conceived of as “the internet of biology” in the same way miniaturized electronic sensors have enabled “the internet of things.” It is well established in the nanotechnology literature that techniques such as field effect biosensing are capable of rapid and flexible biological testing. Until now, access to this new technology has been limited to academic researchers focused on bioelectronic devices and their collaborators. Here we show that this capability is retained in an industrially manufactured device, opening access to this technology generally. Access to this type of production opens the door for rapid deployment of nanoelectronic sensors outside the research space. The low power and resource usage of these biosensors enables biotech engineers to gain immediate control over precise biological and environmental data.
Journal Article
Scalable arrays of chemical vapor sensors based on DNA-decorated graphene
Arrays of chemical vapor sensors based on graphene field effect transistors functionalized with single-stranded DNA have been demonstrated. Standard photolithographic processing was adapted for use on large-area graphene by including a metal protection layer, which protected the graphene from contamination and enabled fabrication of high quality field-effect transistors （GFETs）. Processed graphene devices had hole mobilities of 1,640 ± 250 cm2.V-1.s-1 and Dirac voltages of 15 ± 10 V under ambient conditions. Atomic force microscopy was used to verify that the graphene surface remained uncontaminated and therefore suitable for controlled chemical functionalization. Single-stranded DNA was chosen as the functionalization layer due to its affinity to a wide range of target molecules and π-π stacking interaction with graphene, which led to minimal degradation of device characteristics. The resulting sensor arrays showed analyte- and DNA sequence-dependent responses down to parts-per-billion concentrations. DNA/GFET sensors were able to differentiate among chemically similar analytes, including a series of carboxylic acids, and structural isomers of carboxylic acids and pinene. Evidence for the important role of electrostatic chemical gating was provided by the observation of understandable differences in the sensor response to two compounds that differed only by the replacement of a （deprotonating） hydroxyl group by a neutral methyl group. Finally, target analytes were detected without loss of sensitivity in a large background of a chemically similar, volatile compound. These results motivate further development of the DNA/graphene sensor family for use in an electronic olfaction system.
Journal Article
\The Death of Liberal Internationalism?: Donald Trump, Walmart, and the Two Koreas\
The election of Donald J. Trump unsettled many areas of U.S. foreign policy, but few more than the nation's relationship with Korea. This article argues that the Trump administration's vision for the world represents a stark break from the tradition of liberal internationalism and instead seeks to take the United States down a path that reflects the modern business practices of giant American corporations. A suitable label for this vision, as the following pages will show, is \"Walmart unilateralism.\" This framework abandons the traditional American policies of nation building and alliances based on shared ideological values. Instead, it embraces a more short-term approach rooted in financial bottom lines, flexible alliances and rivalries, and the ruthless exploitation of power hierarchies. This new approach, this article concludes, may dramatically transform the American relationship with Korea. Walmart unilateralism in Korea almost certainly will have some short-time positive ramifications for the United States, but its larger failure to consider the history and values of the people living on the Korean Peninsula may generate serious long-term problems for the future experience of the United States in the region.
Journal Article
Dual-mode operation of 2D material-base hot electron transistors
Vertical hot electron transistors incorporating atomically-thin 2D materials, such as graphene or MoS
2
, in the base region have been proposed and demonstrated in the development of electronic and optoelectronic applications. To the best of our knowledge, all previous 2D material-base hot electron transistors only considered applying a positive collector-base potential (V
CB
> 0) as is necessary for the typical unipolar hot-electron transistor behavior. Here we demonstrate a novel functionality, specifically a dual-mode operation, in our 2D material-base hot electron transistors (e.g. with either graphene or MoS
2
in the base region) with the application of a negative collector-base potential (V
CB
< 0). That is, our 2D material-base hot electron transistors can operate in either a hot-electron or a reverse-current dominating mode depending upon the particular polarity of V
CB
. Furthermore, these devices operate at room temperature and their current gains can be dynamically tuned by varying V
CB
. We anticipate our multi-functional dual-mode transistors will pave the way towards the realization of novel flexible 2D material-based high-density and low-energy hot-carrier electronic applications.
Journal Article
Towards a Carbon Nanotube Intermodulation Product Sensor for Nonlinear Energy Harvesting
It is critically important in designing RF receiver front ends to handle high power jammers and other strong interferers. Instead of blocking incoming energy or dissipating it as heat, we investigate the possibility of redirecting that energy for harvesting and storage. The approach is based on channelizing a high power signal into a previously unknown circuit element which serves as a passive intermodulation device. This intermodulation component must produce a hysteretic current-voltage curve to be useful as an energy harvester. Here we demonstrate a method by which carbon nanotube transistors produce the necessary hysteretic I-V curves. Such devices can be tailored to the desired frequency by introducing functional groups to the nanotubes. These effects controllably enhance the desired behavior, namely, hysteretic nonlinearity in the transistors’ I-V characteristic. Combining these components with an RF energy harvester may one day enable the reuse of inbound jamming energy for standard back end radio components.
Journal Article
A Companion to Lyndon B. Johnson
This companion offers an overview of Lyndon B. Johnson's life, presidency, and legacy, as well as a detailed look at the central arguments and scholarly debates from his term in office. * Explores the legacy of Johnson and the historical significance of his years as president * Covers the full range of topics, from the social and civil rights reforms of the Great Society to the increased American involvement in Vietnam * Incorporates the dramatic new evidence that has come to light through the release of around 8,000 phone conversations and meetings that Johnson secretly recorded as President
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