scholarly journals Percolating Network of Ultrathin Gold Nanowires and Silver Nanowires toward “Invisible” Wearable Sensors for Detecting Emotional Expression and Apexcardiogram

2017 ◽  
Vol 27 (25) ◽  
pp. 1700845 ◽  
Author(s):  
My Duyen Ho ◽  
Yunzhi Ling ◽  
Lim Wei Yap ◽  
Yan Wang ◽  
Dashen Dong ◽  
...  
Keyword(s):  
Emotional Expression ◽  
Silver Nanowires ◽  
Wearable Sensors ◽  
Gold Nanowires ◽  
Percolating Network

scholarly journals Copercolating Networks: An Approach for Realizing High-Performance Transparent Conductors using Multicomponent Nanostructured Networks

Nanophotonics ◽  
2016 ◽  
Vol 5 (1) ◽  
pp. 180-195 ◽  
Author(s):  
Suprem R. Das ◽  
Sajia Sadeque ◽  
Changwook Jeong ◽  
Ruiyi Chen ◽  
Muhammad A. Alam ◽  
...  
Keyword(s):  
Flexible Electronics ◽  
Indium Tin Oxide ◽  
High Performance ◽  
Silver Nanowires ◽  
Optical Transmittance ◽  
Single Component ◽  
Transparent Conductors ◽  
Hybrid Networks ◽  
Gold Nanowires ◽  
Metallic Nanowire Networks

Abstract Although transparent conductive oxides such as indium tin oxide (ITO) are widely employed as transparent conducting electrodes (TCEs) for applications such as touch screens and displays, new nanostructured TCEs are of interest for future applications, including emerging transparent and flexible electronics. A number of twodimensional networks of nanostructured elements have been reported, including metallic nanowire networks consisting of silver nanowires, metallic carbon nanotubes (m-CNTs), copper nanowires or gold nanowires, and metallic mesh structures. In these single-component systems, it has generally been difficult to achieve sheet resistances that are comparable to ITO at a given broadband optical transparency. A relatively new third category of TCEs consisting of networks of 1D-1D and 1D-2D nanocomposites (such as silver nanowires and CNTs, silver nanowires and polycrystalline graphene, silver nanowires and reduced graphene oxide) have demonstrated TCE performance comparable to, or better than, ITO. In such hybrid networks, copercolation between the two components can lead to relatively low sheet resistances at nanowire densities corresponding to high optical transmittance. This review provides an overview of reported hybrid networks, including a comparison of the performance regimes achievable with those of ITO and single-component nanostructured networks. The performance is compared to that expected from bulk thin films and analyzed in terms of the copercolation model. In addition, performance characteristics relevant for flexible and transparent applications are discussed. The new TCEs are promising, but significant work must be done to ensure earth abundance, stability, and reliability so that they can eventually replace traditional ITO-based transparent conductors.

scholarly journals The impact of doping rates on the morphologies of silver and gold nanowires grown in helium nanodroplets

2016 ◽  
Vol 18 (3) ◽  
pp. 1451-1459 ◽  
Author(s):  
Alexander Volk ◽  
Philipp Thaler ◽  
Daniel Knez ◽  
Andreas W. Hauser ◽  
Johannes Steurer ◽  
...  
Keyword(s):  
Metal Atom ◽  
Silver Nanowires ◽  
Gold Nanowires ◽  
Helium Nanodroplets ◽  
The Impact

The morphologies of HeN-grown gold and silver nanowires depend on the metal atom doping rates in the pickup process.

First Principles Study of Structural and Electronic Properties of Pentagonal and Hexagonal Noble Metal Nanowires

NANO ◽  
2016 ◽  
Vol 11 (06) ◽  
pp. 1650069
Author(s):  
Zhi-Jian Fu ◽  
Li-Jun Jia ◽  
Ji-Hong Xia ◽  
Hai-Bo Ruan ◽  
Ke Tang ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Noble Metal ◽  
First Principles ◽  
Density Functional ◽  
Silver Nanowires ◽  
Metal Nanowires ◽  
Gold Nanowires ◽  
Free Standing ◽  
Electronic Band ◽  
Atom Chain

The equilibrium structure and electronic properties of four ultrathin free-standing pentagonal and hexagonal noble metal nanowires, that is, copper nanowires (CuNWs), silver nanowires (AgNWs), gold nanowires (AuNWs) and platinum nanowires (PtNWs), have been studied comprehensively by adopting a first-principles simulation based on the density-functional theory. The staggered topologies are more stable than the eclipsed ones by analyzing the bonding energy. The staggered ones with a linear atom chain in the center of the pentagonal or hexagons topologies are the preferred structures for CuNWs and AgNWs, but the staggered ones without a linear atom chain in the center of the pentagon or hexagon are the preferred structures for AuNWs and PtNWs due to the increasing core–core repulsions. The calculated electronic band structures and density of states present that all the noble metal nanowires are metallic. The projected densities of states (PDOS) of dominant d-states and the charge density show that the narrower d-state moved to the Fermi energy and metallic bonding character for all the noble metal nanowires.

Beeinträchtigtes Erkennen emotionaler Gesichtsausdrücke durch psychiatrische Patientinnen bei Alexithymie

2013 ◽  
Vol 61 (1) ◽  
pp. 7-15 ◽  
Author(s):  
Daniel Dittrich ◽  
Gregor Domes ◽  
Susi Loebel ◽  
Christoph Berger ◽  
Carsten Spitzer ◽  
...  
Keyword(s):  
Emotion Recognition ◽  
Emotional Expression ◽  
Depression Scale ◽  
Facial Emotion Recognition ◽  
Facial Emotion ◽  
Check List ◽  
Psychosomatische Erkrankungen ◽  
Psychiatrische Patienten ◽  
Symptom Check List ◽  
Tas 20

Die vorliegende Studie untersucht die Hypothese eines mit Alexithymie assoziierten Defizits beim Erkennen emotionaler Gesichtsaudrücke an einer klinischen Population. Darüber hinaus werden Hypothesen zur Bedeutung spezifischer Emotionsqualitäten sowie zu Gender-Unterschieden getestet. 68 ambulante und stationäre psychiatrische Patienten (44 Frauen und 24 Männer) wurden mit der Toronto-Alexithymie-Skala (TAS-20), der Montgomery-Åsberg Depression Scale (MADRS), der Symptom-Check-List (SCL-90-R) und der Emotional Expression Multimorph Task (EEMT) untersucht. Als Stimuli des Gesichtererkennungsparadigmas dienten Gesichtsausdrücke von Basisemotionen nach Ekman und Friesen, die zu Sequenzen mit sich graduell steigernder Ausdrucksstärke angeordnet waren. Mittels multipler Regressionsanalyse untersuchten wir die Assoziation von TAS-20 Punktzahl und facial emotion recognition (FER). Während sich für die Gesamtstichprobe und den männlichen Stichprobenteil kein signifikanter Zusammenhang zwischen TAS-20-Punktzahl und FER zeigte, sahen wir im weiblichen Stichprobenteil durch die TAS-20 Punktzahl eine signifikante Prädiktion der Gesamtfehlerzahl (β = .38, t = 2.055, p < 0.05) und den Fehlern im Erkennen der Emotionen Wut und Ekel (Wut: β = .40, t = 2.240, p < 0.05, Ekel: β = .41, t = 2.214, p < 0.05). Für wütende Gesichter betrug die Varianzaufklärung durch die TAS-20-Punktzahl 13.3 %, für angeekelte Gesichter 19.7 %. Kein Zusammenhang bestand zwischen der Zeit, nach der die Probanden die emotionalen Sequenzen stoppten, um ihre Bewertung abzugeben (Antwortlatenz) und Alexithymie. Die Ergebnisse der Arbeit unterstützen das Vorliegen eines mit Alexithymie assoziierten Defizits im Erkennen emotionaler Gesichtsausdrücke bei weiblchen Probanden in einer heterogenen, klinischen Stichprobe. Dieses Defizit könnte die Schwierigkeiten Hochalexithymer im Bereich sozialer Interaktionen zumindest teilweise begründen und so eine Prädisposition für psychische sowie psychosomatische Erkrankungen erklären.

Emotional Expression and Recognition in Breast Cancer and Noncancer Groups

1999 ◽  
Author(s):  
Michele C. Fejfar ◽  
Lee Blonder ◽  
Michael Andrykowski
Keyword(s):  
Breast Cancer ◽  
Emotional Expression
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