Birck Nanotechnology Seminar Series

In This Series

  1. Highly Efficient Thermal Transport: The Application of Carbon Nanotube Array Interfaces

    01 Feb 2007 | Online Presentations | Contributor(s): Baratunde A. Cola

    Carbon nanotubes (CNTs) have received much attention in recent years for their extraordinary properties that through careful engineering may be leverage for the development of numerous advantageous applications. However, to date, only few CNT based applications exist in the market place. So when...

  2. Introduction to X-ray Photoelectron Spectroscopy and XPS Application for Biologically Related Objects

    14 Feb 2007 | Online Presentations | Contributor(s): Dmitry Zemlyanov

    X-ray Photoelectron Spectroscopy (XPS), which is known as Electron Spectroscopy for Chemical Analysis (ESCA), is a powerful research tool for the study of the surface of solids. The technique becomes widely used for studies of the properties of atoms, molecules, solids, and surfaces. The main...

  3. Dendrimer-Templated Catalyst for Controlled Growth of Single-Wall Carbon Nanotubes by Plasma-Enhanced CVD

    20 Feb 2007 | Online Presentations | Contributor(s): Placidus Amama

    Carbon nanotubes (CNTs) are an important class of materials with several technological applications because they possess unparalleled properties in terms of ballistic electrical conductivity, thermal conductivity, tensile strength, and sensitivity to chemical and biological agents. To exploit...

  4. Computer Simulation of Nanoparticles, Viruses, and Electrical Power-Generating Bacteria

    20 Mar 2007 | Online Presentations | Contributor(s): Peter J. Ortoleva

    Models of cells and nanometer-scale biosystems are presented that clarify their physico-chemical characteristics and allow for computer- aided design of therapeutic and nanotechnical devices. Multiscale techniques are used to obtain rigorous, coarse-grained equations for the migration and...

  5. On the Cross Roads of Biology and Nanotechnology – Selective DNA Nanopore Sensors

    21 Mar 2007 | Online Presentations | Contributor(s): Samir Iqbal

    The ability to manipulate and identify the properties of singlebiological molecules with the potential of characterizing biologicalprocesses at the most fundamental levels can significantly facilitaterapid diagnostics and therapeutics. Fabrication of solid-statedevices investigating bacteria,...

  6. Finite Size Scaling and Quantum Criticality

    09 May 2007 | Online Presentations | Contributor(s): Sabre Kais

    The study of quantum phase transitions, which are driven by quantum fluctuations as a consequence of Heisenberg's uncertainty principle, continues to be of increasing interest in the fields of condensed matter and atomic and molecular physics. In this field we have established an analogy between...

  7. Nanotechnology: Considerations for Facility Design

    21 May 2007 | Online Presentations | Contributor(s): John Weaver

    The growing area of study broadly termed nanotechnology provides a new set of challenges to the facility designer. While evolutionary changes in the quality of clean spaces occur, it is the collaborative nature of this field that requires revolutionary changes in facility design. The main...

  8. Understanding Deformation Processes in Nanocrystalline Metals Through the Use of Real-time Electron Microscopy Techniques

    03 May 2007 | Online Presentations | Contributor(s): Eric Stach

    It is has long been known that the grain size of a material has a substantial effect on its mechanical strength, through the well-established Hall-Petch relationship. In the past decade or so, there has been a resurgence of interest in this topic resulting from the ability to create metals with...

  9. Electron Emission from Nanoscale Carbon Materials

    15 May 2007 | Online Presentations | Contributor(s): Timothy S Fisher

    Prior studies on electron emission show possibly beneficial effects ofnanoscale phenomena on energy-conversion characteristics. For example,recent work has shown that the electric field around a nanoscale fieldemission device can increase the average energy of emitted electrons. Weconsider here...

  10. Introduction of MEMS Activity at Nano/Micro System Engineering Lab., Kyoto University

    15 Sep 2007 | Online Presentations | Contributor(s): OSAMU TABATA

    We are aiming at the realization of microsystems and nanosystems with novel and unique functions by integrating functional elements in different domains such as mechanics, electronics, chemistry, optics and biotechnology. These micro/nano systems are expected to be novel machines, which will...

  11. Hexagonal Prism Blue Diode Laser Using Whispering Gallery Mode (WGM) Resonances

    23 Oct 2007 | Online Presentations | Contributor(s): sangho kim

    Semiconductor lasers have many important applications, including communication technologies, optical storage, printing, and molecular detection. The range of applications could be broadened significantly if the lasers could be made smaller and with lower threshold currents. Today’s in-plane...

  12. Plasmonic Metamaterials: Unusual Optics and Applications

    28 Feb 2008 | Online Presentations | Contributor(s): Igor Smolyaninov

    Surface plasmon-polaritons (or plasmons) are collective excitations of the conduction electrons and the electromagnetic field on the surface of such good metals as gold and silver. Near the frequency of surface plasmon resonance plasmons may perceive regular dielectrics as negative index...

  13. Transmission of images with subwavelength resolution to distances of several wavelengths in microwave, terahertz and infrared ranges

    08 Apr 2008 | Online Presentations | Contributor(s): Pavel Belov

    The resolution of conventional imaging systems is restricted by thediffraction limit: the details smaller than half-wavelength of radiationcannot be resolved. Using novel engineered media with extreme opticalanisotropy and their waveguiding properties it is possible to overcomethe classical limit...

  14. Linear and Nonlinear Optical Devices Based on Slow Light Propagation: Figures of Merit

    19 May 2008 | Online Presentations | Contributor(s): Jacob B. Khurgin

    Performance of optical delay lines and nonlinear devices based on slow wave propagation in photonic crystal waveguides in the presence of higher order dispersion is analyzed and compared with other slow light schemes, such as coupled resonators, media with electromagnetically-induced...

  15. "Ab Initio" Theory of Novel Micro and Nanolasers

    19 May 2008 | Online Presentations | Contributor(s): A. Douglas Stone

    While the laser is one of the most important inventions of the past century and one of the most interesting and controllable non-linear systems in physics, there is surprisingly little predictive theory of lasing properties. Predicting lasing thresholds and output power far above threshold in the...

  16. Silicon Spintronics

    04 Jun 2008 | Online Presentations | Contributor(s): Ian Appelbaum

    "Electronics" uses our ability to control electrons with electric fields via interaction with their fundamental charge. Because we can manipulate the electric fields within semiconductors, they are the basis for microelectronics, and silicon (Si) is the most widely-used semiconductor for...

  17. X-ray Diffraction and Reflectivity Analysis of Thin Films and Nanomaterials

    29 Dec 2009 | Online Presentations | Contributor(s): Mauro Sardela

    A review of x-ray analysis techniques applied to the characterization of nanomaterials will be presented with focus on x-ray lab source instrumentation similar to the facilities available at the Birck Nanotechnology Center. Practical aspects of data acquisition and interpretation using x-ray...

  18. Control of Spin Precession in a Datta-Das Transistor Structure

    11 Apr 2011 | Online Presentations | Contributor(s): Hyun Cheol Koo

    Transistors Switch onto Spin Using the spin of an electron in addition to, or instead of, the charge properties is believed to have many benefits in terms of speed, power-cost, and integration density over conventional electronic circuits. At the heart of the field of spintronics has been a...

  19. Surface Characterization Studies of Carbon Materials: SS-DNA, SWCNT, Graphene, HOPG

    16 Feb 2010 | Online Presentations | Contributor(s): Dmitry Zemlyanov

    In this presentation examples of surface characterization studies of carbon specimens will be presented. (1) In particularly, the systematic XPS (X-ray photoelectron spectroscopy) characterization of graphene grown on the SiC surface will be reported. This work demonstrates a use for XPS to...

  20. Ripples and Warping of Graphene: A Theoretical Study

    08 Jun 2010 | Online Presentations | Contributor(s): Umesh V. Waghmare

    We use first-principles density functional theory based analysis to understand formation of ripples in graphene and related 2-D materials. For an infinite graphene, we show that ripples are linked with a low energy branch of phonons that exhibits quadratic dispersion at long wave-lengths. Many...

  21. Transformative Power Semiconductor Technologies to Impact 21st Century Energy Economy, and Space and Defense Electronics

    22 Sep 2010 | Online Presentations | Contributor(s): Krishna Shenai

    This talk will focus on advanced power semiconductor materials, devices, circuits and systems that are needed in order to address this daunting challenge. Specifically we will discuss emerging silicon and wide bandgap materials and power devices, heterogeneous chip-scale power integration,...

  22. Nanotechnology Activities in Colombia: A Perspective From the Excellence Center for Novel Materials

    11 Oct 2010 | Online Presentations | Contributor(s): Pedro Antonio Prieto

    I will present the current state of R & D in the fields of condensed matter, novel materials, and nanotechnology in Colombia. I will initially consider Latin America and the Caribbean (LAC) to then visualize individual developments, as well as those for the region as a whole in these fields of...

  23. Electric and Magnetic Properties of Multiferroic Oxide Thin Films and Heterostructures

    20 Oct 2010 | Online Presentations | Contributor(s): Pedro Antonio Prieto

    Outline:IntroductionPreparation methods for oxide thin filmsOxide thin films and heterostructures Multiferroic materialsBiFeO3, YMnO3, BiMnO3 thin films and FE/FM CompositesConclusions

  24. TiCN/TiNbCN Multilayer System with Enhanced Tribological Properties

    20 Oct 2010 | Online Presentations | Contributor(s): Pedro Antonio Prieto

    Improvement in the mechanical properties of hard coatings such monolayer (TiN, CrN, AlCN, WC-Co, TiCN) [1], has been achieved using compositional gradient WC/C layer, or multilayered type [transition metal/transition carbide]n, [transition metal/transition nitride]n, [TiCN/ZrCN]n, among others....

  25. The Elusive Spin Transistor

    11 Apr 2011 | Online Presentations | Contributor(s): Supriyo Datta

    This presentation is a short introductory tutorial on spin-transistors.

  26. Design of Optoelectronically-active Polymers for Organic Photovoltaic Applications

    08 Feb 2013 | Online Presentations | Contributor(s): Bryan W. Boudouris

    Organic photovoltaic (OPV) devices are of great interest due to their promise of providing flexible, lightweight, and inexpensive alternatives to their currently-used inorganic counterparts. However, large-scale implementation of these modules has been hampered due to their relatively low power...

  27. High-Rate Processing and Advanced Emitter Structures for CIGS PV Module Manufacturing

    11 Jul 2013 | Online Presentations | Contributor(s): B. J. Stanbery

    Achieving both macroscopic homogeneity and nanoscale heterogeneity for non-stoichiometric multinary compounds is a critical challenge for the success of copper indium gallium selenide (CIGS) photovoltaic cells. Co-evaporation yields world record performance, but is also a high-temperature vacuum...

  28. Engineered Defects in Wide Band-gap Semiconductors for Single-spin Sensing and Computation

    26 Mar 2014 | Online Presentations | Contributor(s): Abram Falk

    Using infrared light at near-telecom wavelengths, I will show that spin states in silicon carbide exhibit long quantum coherence times that persist up to room temperature. I will also discuss new strategies for generating coherent spin interactions at the nanoscale using defects in inequivalent...

  29. Optical Multi-Dimensional Coherent Spectroscopy of Semiconductor Nanostructures

    08 Apr 2014 | Online Presentations | Contributor(s): Steven Cundiff

    I will give an introduction to optical two-dimensional coherent spectroscopy and then present our use of it to study optical resonances in semiconductor nanostructures. In quantum wells, our results show that many-body effects dominate the light-matter interaction for excitons in semiconductors...

  30. Disordered Photonics

    11 Apr 2014 | Online Presentations | Contributor(s): Hui Cao

    Most of the research in the field of photonics has focused on understanding and mitigating the effects of disorder which are often detrimental. For certain applications, however, intentionally introducing disorder can actually improve the device performance, e.g., in photovoltaics optical...

  31. Insight into Time-Resolved Photoluminescence Measurements on Thin-film Solar Cells using Numerical Simulations

    09 Oct 2014 | Online Presentations | Contributor(s): Ana Kanevce

    Increased efficiency in thin-film solar cells requires higher degree of understanding of the recombination mechanisms, and separating the various types of recombination involved. Time resolved photoluminescence (TRPL) measurement is a contactless and quick measurement method, and therefore one of...

  32. Active Nanophotonics: From Coherent Control of Quantum Emitters to Plasmonic Nanolasers

    28 Apr 2014 | Online Presentations | Contributor(s): Ken Shih

    Light-matter interaction at nanometer scale is emerging as one of the most exciting fields in nanoscience. In combination with the advanced materials synthesis technique to tailor novel low-dimensional electronic systems, new doors are open toward design and realization of nanophotonic devices...

  33. Coherent Nonlinear Optics, Backward Waves and Negative Spatial Dispersion

    16 May 2014 | Online Presentations | Contributor(s): Alexander K. Popov

    Extraordinary frequency-converting nonlinear-optical propagation processes associated with backward electromagnetic and elastic waves are described. Particular realizations of negative spatial dispersion which enable such waves are investigated.

  34. Ongoing Transformation of Computational Nanophotonics

    18 May 2014 | Online Presentations | Contributor(s): Alexander V. Kildishev

    Computational nanophotonics is one of the central tools of the science of light and photonic device engineering. It plays a crucial role in enabling optical technologies ranging from bio-sensing to quantum information processing. Up to the present, a plethora of various methods and commercial...

  35. Coupling of Electron Spin Dynamics and Nanomechanical Motion in Carbon Nanotubes

    20 Nov 2014 | Online Presentations | Contributor(s): Mark Rudner

    Due to their low masses and high stiffnesses, nanostructures made out of atomically-thin carbon- based materials such as graphene and carbon nanotubes (CNTs) feature high mechanical oscillation frequencies and large zero-point vibration amplitudes. These properties open many avenues for exploring...

  36. Impedance Spectroscopy Methods Applied to Thermoelectric Materials and Devices

    19 Nov 2014 | Online Presentations | Contributor(s): Jorge García-Cañadas

    Impedance spectroscopy is one of the most helpful techniques for the characterization of a wide range of devices (solar cells, supercapacitors, fuel cells, etc.). However, it is not extensively used in the thermoelectric field and most of existing work is mainly focused on determining the figure...

  37. Spaser in Quantum Regime

    12 Feb 2015 | Online Presentations | Contributor(s): Mark I Stockman

    The spaser have been introduced theoretically and discovered experimentally. We briefly consider quantum theory and latest results on spaser as an ultrafast quantum generator and amplifier of nanoplasmonic fields, ultrabright nanolabel, and highly-efficient nanosensor. We present latest original...

  38. Addressing Societal-scale Challenges with Nanoscale Materials: Flexible, Impedance-sensing “Smart Bandages” Enable Early Detection of Pressure Wounds

    20 Apr 2015 | Online Presentations | Contributor(s): Sarah Swisher

    In this talk, I will introduce our work developing solution-processed materials for flexible electronics, with emphasis on how these materials will enable new applications. I will then focus on one example: our recent development of a “smart bandage” prototype for detecting and...

  39. New Frontiers in Terahertz Technology

    13 May 2015 | Online Presentations | Contributor(s): Mona Jarrahi

    In this talk, I will describe some of our recent results on developing fundamentally new terahertz electronic/optoelectronic components and imaging/spectrometry architectures to mitigate performance limitations of existing terahertz systems.

  40. Adventures with Oxide Interfaces: Electronics, Magnetism, Memory, Energy and Biology

    25 Feb 2016 | Online Presentations | Contributor(s): T. Venky Venkatesan

    In this talk I share a personal close up view of the evolution of this field and where I see it going. I will cover polar/non-polar oxide interface conductivity, defect induced magnetism, FE tunnel junctions and some recent work on bio-oxide interfaces.

  41. Plasmonics and Metasurfaces for Extreme Manipulation of Light

    08 Mar 2016 | Online Presentations | Contributor(s): Yongmin Liu

    In this talk, I will present some of our work in the fascinating field of plasmonics and optical metasurfaces. First, I will discuss reconfigurable plasmonic lenses operating in microfluidic environment, which can dynamically diverge, collimate and focus surface plasmons [5]. Second, I will...

  42. Heat Under the Microscope:
 Uncovering the Microscopic Processes that Govern 
Thermal Transport

    04 Oct 2016 | Online Presentations | Contributor(s): Austin Minnich

    n this talk, I will describe our efforts to uncover the microscopic processes that govern thermal transport by phonons. In particular, I will describe how our advances in computation and experiment have enabled the first direct measurements of thermal phonon transmission coefficients at solid...

  43. Many Body Effects on Optical Properties of Graphene

    13 Oct 2016 | Online Presentations | Contributor(s): Subhasis Ghosh

    Graphene, a two-­dimensional (2D) material shows remarkable optical and electronic properties, such as a linear energy dispersion, chirality and half-­integer quantum Hall effect. Multilayer graphene flakes, held together by weak van der Waals forces have also attracted attention due to...

  44. Introduction to the Quantum Design Systems in the Birck Spintronics Lab

    17 Aug 2016 | Online Presentations | Contributor(s): Neil R Dilley

    Presentation about the design and capabilities of the PPMS DynaCool Cryostat and the MPMS-3 SQUID Magnetometer.

  45. High Accuracy Atomic Force Microscope with Self-Optimizing Scan Control

    19 Sep 2016 | Online Presentations | Contributor(s): Ryan (Young-kook) Yoo

    Atomic force microscope (AFM) is a very useful instrument in characterizing nanoscale features, However, the original AFM design, based on piezo-tube scanner, had slow response and non-orthogonal behavior, inadequate to address the metrology needs of industrial applications: accuracy,...

  46. Characterization of 2D materials at Birck Surface Analysis Facility

    28 Sep 2016 | Online Presentations | Contributor(s): Dmitry Zemlyanov

    Material characterization is an important aspect for various applications. In particularly, for 2D materials and nano-materials, the surface characterization becomes crucial for smart material design, functionalization, fabrication, etc. Surface Analysis Facility at Birck Nanotechnology Center,...

  47. Bringing Quantum Mechanics to Life: From Schrödinger's Cat to Schrödinger's Microbe

    01 Nov 2016 | Online Presentations | Contributor(s): Tongcang Li

    In this talk, I will first give a brief introduction to basic concepts in quantum mechanics and the Schrödinger's cat thought experiment. I will then review developments in creating quantum superposition and entangled states and the realization of quantum teleportation. Non-trivial quantum...

  48. Radiative Heat Transfer at the Nanoscale

    12 Dec 2016 | Online Presentations | Contributor(s): Pramod Reddy

    In this talk, I will describe ongoing efforts in our group to experimentally elucidate nanoscale heat radiation. Specifically, I will present our recent experimental work where we have addressed the following questions: 1) Can existing theories accurately describe radiative heat transfer in...

  49. Toward Quantum Enhanced Plasmonic Sensors

    14 Dec 2016 | Online Presentations | Contributor(s): Alberto Marino

    In this talk I will describe our work towards this goal based on the interface between quantum states of light, known as twin beams, and plasmonic sensors.

  50. Laser Filtering, Metamaterials, and Commercializing Through the Lens of the Mythical Person Month

    09 Jan 2017 | Online Presentations | Contributor(s): Themos Kallos

    In this work we investigate whether optical metamaterials in particular may require more than the typical resources to lead to successful commercialization. We also compare the estimated efforts with other technology commercialization projects of the recent past. ...

  51. Circuits on Cellulose: From Transistors to LEDs, from Displays to Microfluidics on Paper

    14 Feb 2017 | Online Presentations | Contributor(s): Andrew Steckl

    In this lecture I will review the use of cellulose-based paper as a material in a variety of electronic (and related) applications, including transistors, light emitting diodes, displays, microfluidics. Paper is a very attractive material for many device applications: very low cost, available in...

  52. How to Engineer Human Microbiomes?

    02 Mar 2017 | Online Presentations | Contributor(s): Mohit Verma

    We are developing tools based on nanotechnology, bioengineering, and analytical chemistry to understand causal relationships between microbiomes and their hosts, and to manipulate microbiomes for desirable outcomes, e.g. to shift patients from unhealthy to healthy states. One of these tools uses...

  53. Thin Film Semiconductors for Efficient Energy Conversion

    08 May 2017 | Online Presentations | Contributor(s): Carolin M. Sutter-Fella

    New semiconductor materials show immense potential as building blocks in emerging optoelectronic devices. Therefore, the quest continues for semiconductors that possess suitable bandgaps for efficiently capturing the solar spectrum, are composed of abundant elements, and can be deposited over...

  54. Can we save lives with thermodynamics? Nanoengineering and Thermofluids for the Water-Food-Energy Nexus

    27 Apr 2017 | Online Presentations | Contributor(s): David M. Warsinger

    Climate change, degrading water resources, and economic and population growth are increasing the need for new science and technologies at the Water-Energy-Food Nexus. In enabling new and improved technologies to tackle these issues, new nanomaterials designed with systems-level thermodynamics is...

  55. History of SiC Power Devices and a Vision for the Future

    21 Apr 2017 | Online Presentations | Contributor(s): Anant Kumar Agarwal

    We will discuss technical issues that have been solved to date and new problems that will need to be addressed to enable the further adoption of WBG devices. Specifically, we will focus on the technical challenges associated with the development of 10-40 kV SiC Insulated Gate Bipolar Transistors...

  56. What is Markovian and non-Markovian in Quantum Mechanics: New Approaches and Viewpoints

    15 May 2017 | Online Presentations | Contributor(s): Francesco Ciccarello

    While in classical physics the notion of what is Markovian or not is well defined, this is not the case when it comes to open quantum systems. What makes a quantum dynamics Markovian or non-Markovian (NM)? Traditional answers to this question involve the celebrated Lindblad master equation (ME)...

  57. Printed Nanostructured Optoelectronic Devices and Systems

    17 May 2017 | Online Presentations | Contributor(s): Uli Lemmer

    In this talk I will first discuss nanophotoniclight management structures in large area optoelectronic devices and the possibilities offered by organic semiconductor lasers [1] and organic photodiodes [2] for sensing applications. Furthermore the talk will discuss recent progress for energy...

  58. Equipment, Techniques, and Growth of Ultra-High Purity AlGaAs-GaAs Heterostructures by Molecular Beam Epitaxy

    26 May 2017 | Online Presentations | Contributor(s): Geoff Gardner

    In this talk I detail research and investigation into critical equipment and materials engineering issues related to the quality of the fabricated 2DEG systems. I also will present data that demonstrates the critical role gallium purity plays in 2DEG mobility.

  59. Magnetic Microsystems: Tiny Magnets Solving Big Problems

    23 Oct 2017 | Online Presentations | Contributor(s): Donald P. Arnold

    In this talk will highlight my group's development of microfabricated permanent magnets and their application in various functional microsystems.  To set the stage, I'll first describe some basic concepts about magnets and physical scaling laws that motivate our efforts. ...

  60. Bioelectronic Devices for Personalized and Precision Medicine: from Wearable Sensors to Medical Nanorobots

    08 Dec 2017 | Online Presentations | Contributor(s): Wei Gao

    In this talk, I will firstly introduce fully-integrated biosensors for multiplexed in-situ perspiration analysis, which can selectively measure a wide spectrum of sweat analytes (e.g. metabolites, electrolytes and heavy metals) and provide insightful information about our health state. Then I...

  61. Development of Iontronics

    19 Jan 2018 | Online Presentations

    In this talk, I'm going to show the novel technique to modulate carrier density making use of ionic liquid electrolytes. With electrolyte gating, we can modulate up to 10^15/cm2 of carrier density at the interface which is 2 orders of magnitude larger than conventional gate dielectrics and...

  62. Nano Device Laboratories - Beyond More than Moore CMOS

    21 Dec 2017 | Online Presentations | Contributor(s): Wen-Kuan Yeh

    NDL (National Nano Device Laboratories) is an important place to cultivate high-level technology talents for semiconductor and nano techniques in Taiwan.  It has become a national open nano device process test environment, and provided a unique open experiment research environment for...

  63. Mesoscopic Optics

    29 Jan 2018 | Online Presentations | Contributor(s): Hui Cao

    In applications, optical scattering is the main obstacle to imaging or sending information through turbid media. Recent developments of adaptive wavefront shaping in optics enabled imaging and focusing of light through opaque samples. By selective coupling to open or closed channels, we varied...

  64. Integrated Photonic and Plasmonic Signal Transduction for Micro- and Nanomechanical Sensing

    08 Feb 2018 | Online Presentations | Contributor(s): Vladimir Aksyuk

    Measuring unknown quantities by coupling them to mechanical motion dates back at least 5000 years: simple equal-arm balances used for weighing goods in ancient Egypt are in fact mechanical measurement tools, with motion detected optically by the human eye. Modern microfabrication enables...

  65. Environmental Impacts of Nanoparticles: The Good, the Bad and the Beautiful

    16 Jul 2018 | Online Presentations | Contributor(s): James Kubicki, NACK Network


  66. Scalable Thermal Energy Technologies Seminar

    20 Feb 2018 | Online Presentations | Contributor(s): Shannon Yee

    The thermal conversion technologies that STEEL currently focusses on are: (i) polymer-based thermoelectrics, (ii) thermoelectro- chemical converters, specifically sodium ion heat engines and redox flow coolers, (iii) mass manufacturable thermoelectric technologies, and (iv) betavoltaic energy...

  67. Secure Human Centered Network of Intelligent Devices using Human Body Communication and In-Sensor Analytics

    28 Feb 2018 | Online Presentations | Contributor(s): Shreyas Sen

    In this talk we will highlight how a Secure Human-Centered Network of Intelligent Devices can be employed using multiple on-body sensors and a body hub connected to the cloud by efficiently incorporating (1) Staged Inference i.e. distributing the analytics in a hierarchical manner from sensors...

  68. Processing Science at Scale to Traverse the ‘Valley of Death’ from Fundamental Science to Commercialization

    06 Mar 2018 | Online Presentations | Contributor(s): Bryan D. Vogt

    Fundamental early-stage research can benefit from consideration of scalability, processing and manufacturability. Shorter vignettes will be presented describing how these concepts can be applied generally to defined problems at various technical readiness levels (TRLs).

  69. Laser Processing and Printing of Multilayer Films for Inexpensive and Flexible Microsystems

    29 May 2018 | Online Presentations | Contributor(s): Rahim Rahimi

    In the first section, I will describe the use of localized CO2 laser irradiation to selectively convert thermoset polymer films (e.g., polyimide) into electrically conductive and highly porous carbon micro/nano structures. This process provides a unique and facile approach for direct writing of...

  70. GHz CMOS-MEMS Resonators

    05 Apr 2018 | Online Presentations | Contributor(s): Dana Weinstein

  71. Softening Hard CMOS Electronics through Manufacturable Heterogeneous Integration

    09 Apr 2018 | Online Presentations | Contributor(s): Muhammad Mustafa Hussain

    Moving forward as Internet of Everything (IoE) seamlessly connects people, process, device and data – can CMOS technology be expanded further to achieve new features in CMOS electronics while maintaining and/or strengthening existing attributes? Will the functionalities over cost be...

  72. Building Bone with Polymers: How New Materials & Additive Manufacturing are Changing Medicine

    20 Apr 2018 | Online Presentations | Contributor(s): Matthew L. Becker

    This presentation will describe the use of several translationally relevant chemistries and functionalization strategies that are impacting the practice of medicine and how physicians are planning for future therapies using additive manufacturing that were not possible previously.

  73. Energy Conversion with Semiconducting Polymers

    30 Apr 2018 | Online Presentations | Contributor(s): Michael Chabinyc

    We will discuss how soft X-ray scattering and high-resolution transmission electron microscopy can be used to reveal the charge transport pathways in semiconducting polymers. These studies provide a basis for understanding how electrical doping impacts their thermoelectric performance. We will...

  74. Quantum Optics on a Nonlinear Chip

    08 May 2018 | Online Presentations | Contributor(s): Alexander Solntsev

    Bringing the concepts of quantum entanglement and optical nonlinearity together, and integrating them on a chip, opens a way to efficient generation of entangled photons and entanglement.

  75. Semiconducting Halide Perovskite Nanomaterials and Heterojunctions

    10 May 2018 | Online Presentations | Contributor(s): Letian Dou

    Firstly, we present new synthetic methodology of halide perovskite nanowires with desired size, composition, and properties. Such synthetic approach includes colloidal, solution-phase, and vapor-phase growth. Sub-micrometer single crystal nanowires from solution-phase growth were demonstrated...

  76. Organic Conductive Polymers for Wearables Electronics

    29 May 2018 | Online Presentations | Contributor(s): Gegory A. Sotzing

    Our research laboratory has been involved with the incorporation of PEDOT-PSS into fabrics such as nonwovens like synthetic leathers, and wovens/knits such as spandex. We have discovered that a phase segregation of PEDOT and PSS occurs when PEDOT-PSS is applied to fabric via an esterification...

  77. The implication of Using Conductive Nitrides as Alternative Plasmonic Materials: Going Beyond TiN and ZrN

    29 May 2018 | Online Presentations | Contributor(s): Panos A. Patsalas

    In this seminar, the optical properties of VN, NbN, TaN, WN, and MoN polycrystalline and epitaxial films will be reviewed and will be critically evaluated by comparing them with ab initio calculations of the band structure of the ideal cubic crystals. Their optical performance will be also...

  78. Massively Parallel Sensing of Molecules with Mid-infrared Frequency Combs

    03 Jul 2018 | Online Presentations | Contributor(s): Konstantin L. Vodopyanov

    Mid-infrared spectroscopy offers supreme sensitivity for detection of trace gases, solids and liquids, based on specific for this spectral region telltale vibrational bands. I will present a new platform for mid-infrared spectroscopy, based on a pair of mutually coherent and broadband frequency...

  79. Magnon-Mediated Interlayer Coupling and Spin-Transfer Torques

    09 Jul 2018 | Online Presentations | Contributor(s): Ran Cheng

    In this talk we propose a magnonic analog of spin‐valve composed of insulating ferromagnet/antiferromagnet/ferromagnet trilayer. We find that magnons inside the antiferromagnetic spacer can mediate an effective exchange coupling between the two ferromagnets similar to the RKKY interaction.

  80. Shape-Preserving Transformation of Synthetic and Biogenic Structures into Chemically-Tailored 3-D Macroscopic and Microscopic Materials

    23 Oct 2018 | Presentation Materials | Contributor(s): Kenneth H. Sandhage

    Biological and synthetic self-assembly processes can yield macro-to-microscale structures with a variety of morphologies and fine patterned features. For example, intricate three-dimensional (3-D) microscale silica-based, chitin-based, and sporopollenin-based structures with finely-patterned...

  81. Directional Scattering of Light by Silicon Nanoparticles and Nanostructures due to High-Order Multipoles Contribution

    31 Oct 2018 | Online Presentations | Contributor(s): Pavel D. Terekhov

    Here we consider both the scattering properties of single dielectric nanoparticles and optical characteristics of 2D periodic arrays. We use the method of the multipole decomposition of electromagnetic fields scattered by dielectric nanostructures to investigate their electromagnetic...

  82. Progress in Vacuum Pressure Measurement

    07 Nov 2018 | Online Presentations | Contributor(s): Martin Wuest

    For many years standard vacuum pressure measurement sensors consist of capacitance diaphragm gauges, Pirani heat transfer gauges as well as ionization gauges. Development has progressed from passive gauges with a detached controller to combination gauges with integrated electronics. Market...

  83. Spatially Resolved Electrochemical Imaging on Energy Materials

    12 Nov 2018 | Online Presentations | Contributor(s): Akichika Kumatani

    In this talk, we will show recent progress of nanoscale electrochemical imaging on energy materials from battery electrodes to two-dimensional materials by SECCM.