Institution
Istituto Italiano di Tecnologia
Facility•Genoa, Italy•
About: Istituto Italiano di Tecnologia is a facility organization based out in Genoa, Italy. It is known for research contribution in the topics: Robot & Humanoid robot. The organization has 4561 authors who have published 14595 publications receiving 437558 citations. The organization is also known as: Italian Institute of Technology & IIT.
Topics: Robot, Humanoid robot, Graphene, iCub, Nanoparticle
Papers published on a yearly basis
Papers
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TL;DR: This work demonstrates single-exciton, single-mode, spectrally tuned lasing from ensembles of optical antenna-designed, colloidal core/shell CdSe/CdS quantum rods deposited on silica microspheres, thereby inducing a large exciton–bi-Exciton energy shift.
Abstract: Whispering-gallery-mode resonators have been extensively used in conjunction with different materials for the development of a variety of photonic devices. Among the latter, hybrid structures, consisting of dielectric microspheres and colloidal core/shell semiconductor nanocrystals as gain media, have attracted interest for the development of microlasers and studies of cavity quantum electrodynamic effects. Here we demonstrate single-exciton, single-mode, spectrally tuned lasing from ensembles of optical antenna-designed, colloidal core/shell CdSe/CdS quantum rods deposited on silica microspheres. We obtain single-exciton emission by capitalizing on the band structure of the specific core/shell architecture that strongly localizes holes in the core, and the two-dimensional quantum confinement of electrons across the elongated shell. This creates a type-II conduction band alignment driven by coulombic repulsion that eliminates non-radiative multi-exciton Auger recombination processes, thereby inducing a large exciton–bi-exciton energy shift. Their ultra-low thresholds and single-mode, single-exciton emission make these hybrid lasers appealing for various applications, including quantum information processing.
134 citations
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TL;DR: The soundness of the entire control architecture is validated in a real scenario involving the robot iCub balancing and making contacts at both arms, and how to implement a joint torque control in the case of DC brushless motors is shown.
Abstract: This paper details the implementation on the humanoid robot iCub of state-of-the-art algorithms for whole-body control. We regulate the forces between the robot and its surrounding environment to stabilize a desired robot posture. We assume that the forces and torques are exerted on rigid contacts. The validity of this assumption is guaranteed by constraining the contact forces and torques, e.g. the contact forces must belong to the associated friction cones. The implementation of this control strategy requires to estimate the external forces acting on the robot, and the internal joint torques. We then detail algorithms to obtain these estimations when using a robot with an iCub-like sensor set, i.e. distributed six-axis force-torque sensors and whole-body tactile sensors. A general theory for identifying the robot inertial parameters is also presented. From an actuation standpoint, we show how to implement a joint torque control in the case of DC brushless motors. In addition, the coupling mechanism of the iCub torso is investigated. The soundness of the entire control architecture is validated in a real scenario involving the robot iCub balancing and making contacts at both arms.
134 citations
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TL;DR: As a consequence of its robust inhibitory effect on Gli1 activity, Glabrescione B inhibited the growth of Hedgehog‐dependent tumor cells in vitro and in vivo as well as the self‐renewal ability and clonogenicity of tumor‐derived stem cells.
Abstract: Hedgehog signaling is essential for tissue development and stemness, and its deregulation has been observed in many tumors. Aberrant activation of Hedgehog signaling is the result of genetic mutations of pathway components or other Smo-dependent or independent mechanisms, all triggering the downstream effector Gli1. For this reason, understanding the poorly elucidated mechanism of Gli1-mediated transcription allows to identify novel molecules blocking the pathway at a downstream level, representing a critical goal in tumor biology. Here, we clarify the structural requirements of the pathway effector Gli1 for binding to DNA and identify Glabrescione B as the first small molecule binding to Gli1 zinc finger and impairing Gli1 activity by interfering with its interaction with DNA. Remarkably, as a consequence of its robust inhibitory effect on Gli1 activity, Glabrescione B inhibited the growth of Hedgehog-dependent tumor cells in vitro and in vivo as well as the self-renewal ability and clonogenicity of tumor-derived stem cells. The identification of the structural requirements of Gli1/DNA interaction highlights their relevance for pharmacologic interference of Gli signaling.
134 citations
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TL;DR: This minireview is intended to survey the progress on Cs 2 AgInCl 6 and provide a guidance for further study to develop new lead-free halide perovskites for emerging optoelectronic applications.
Abstract: Lead-free halide perovskites have drawn wide attention as alternatives to their toxic and poorly stable lead-based counterparts. Among them, double perovskites with Cs2 AgInCl6 composition, often doped with various elements, have been in the spotlight owing to their intriguing optical properties, namely, self-trapped exciton (STEs) emission and dopant-induced photoluminescence. This interest has sparked different synthesis approaches towards both crystals and nanocrystals, and the exploration of many alloy compositions with mono- and trivalent cations other than Ag+ and In3+ . In this Minireview we describe the recent developments on Cs2 AgInCl6 bulk crystals and nanocrystals, their synthesis strategies, intrinsic optical properties, and tunable photoluminescence originating from different alloying and doping effects. We also discuss progress on computational studies aimed at understanding the thermodynamic stability, the role of defects, and the origin of photoluminescence in relation to the STEs and the direct band gap character.
134 citations
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TL;DR: In this paper, the authors apply various closure schemes to model ring polymers to characterize the arc entanglement trapped in any portion (arc) of the ring and compare them with trefoil knots, which have the same length and topological state but have different degree of compactness.
Abstract: The interplay between the topological and geometrical properties of a polymer ring can be clarified by establishing the entanglement trapped in any portion (arc) of the ring. The task requires closing the open arcs into a ring, and the resulting topological state may depend on the specific closure scheme that is followed. To understand the impact of this ambiguity in contexts of practical interest, such as knot localization in a ring with non trivial topology, we apply various closure schemes to model ring polymers. The rings have the same length and topological state (a trefoil knot) but have different degree of compactness. The comparison suggests that a novel method, called the minimally-interfering closure, can be profitably used to characterize the arc entanglement in a robust and computationally-efficient way. This closure method is applied to the knot localization problem which is tackled using two different localization schemes based on top-down or bottom-up searches.
133 citations
Authors
Showing all 4601 results
Name | H-index | Papers | Citations |
---|---|---|---|
Marc G. Caron | 173 | 674 | 99802 |
Paolo Vineis | 134 | 1088 | 86608 |
Michele Parrinello | 133 | 637 | 94674 |
Alex J. Barker | 132 | 1273 | 84746 |
Tomaso Poggio | 132 | 608 | 88676 |
Shuai Liu | 129 | 1095 | 80823 |
Giacomo Rizzolatti | 117 | 298 | 97242 |
Yehezkel Ben-Ari | 110 | 459 | 44293 |
Daniele Piomelli | 104 | 505 | 49009 |
Bruno Scrosati | 103 | 580 | 66572 |
Wolfgang J. Parak | 102 | 469 | 43307 |
Liberato Manna | 98 | 494 | 44780 |
Muhammad Imran | 94 | 3053 | 51728 |
Ole Isacson | 93 | 345 | 30460 |
Luigi Ambrosio | 93 | 761 | 39688 |