scholarly journals Advances in Atomtronics

Entropy ◽  
2021 ◽  
Vol 23 (5) ◽  
pp. 534
Author(s):  
Ron A. Pepino
Keyword(s):  
Atomic Physics ◽  
Closed Loop ◽  
Quantum States ◽  
Optical Systems ◽  
Ultracold Atom ◽  
Electronic Components ◽  
Potential Applications

Atomtronics is a relatively new subfield of atomic physics that aims to realize the device behavior of electronic components in ultracold atom-optical systems. The fact that these systems are coherent makes them particularly interesting since, in addition to current, one can impart quantum states onto the current carriers themselves or perhaps perform quantum computational operations on them. After reviewing the fundamental ideas of this subfield, we report on the theoretical and experimental progress made towards developing externally-driven and closed loop devices. The functionality and potential applications for these atom analogs to electronic and spintronic systems is also discussed.

scholarly journals Advances in atomtronics

2021 ◽  
Author(s):  
Ron Pepino
Keyword(s):  
Atomic Physics ◽  
Closed Loop ◽  
Quantum States ◽  
Optical Systems ◽  
Ultracold Atom ◽  
Electronic Components ◽  
Potential Applications

Atomtronics is a relatively new subfield of atomic physics that aims to realize the device behavior of electronic components in ultracold atom-optical systems. The fact that these systems are coherent makes them particularly interesting since, in addition to current, one can impart quantum states onto the current carriers themselves or perhaps perform quantum computational operations on them. After reviewing the fundamental ideas of this subfield, we report on the theoretical and experimental progress made towards developing externally-driven and closed loop devices. The functionality and potential applications for these atom analogs to electronic and spintronic systems is also discussed.

scholarly journals Circular RNAs: Potential Applications as Therapeutic Targets and Biomarkers in Breast Cancer

2021 ◽  
Vol 7 (1) ◽  
pp. 2
Author(s):  
Debina Sarkar ◽  
Sarah D. Diermeier
Keyword(s):  
Breast Cancer ◽  
Translational Regulation ◽  
Closed Loop ◽  
Mechanisms Of Action ◽  
Circular Rnas ◽  
Therapeutic Approaches ◽  
Mirna Sponge ◽  
Bodily Fluids ◽  
Potential Applications ◽  
Non Coding Rnas

Circular RNAs (circRNAs) are a class of non-coding RNAs that form a covalently closed loop. A number of functions and mechanisms of action for circRNAs have been reported, including as miRNA sponge, exerting transcriptional and translational regulation, interacting with proteins, and coding for peptides. CircRNA dysregulation has also been implicated in many cancers, such as breast cancer. Their relatively high stability and presence in bodily fluids makes cancer-associated circRNAs promising candidates as a new biomarker. In this review, we summarize the research undertaken on circRNAs associated with breast cancer, discuss circRNAs as biomarkers, and present circRNA-based therapeutic approaches.

Topological Structural Design of Umbrella-Shaped Deployable Mechanisms Based on New Spatial Closed-Loop Linkage Units

2018 ◽  
Vol 140 (6) ◽  
Author(s):  
Wen-ao Cao ◽  
Donghao Yang ◽  
Huafeng Ding
Keyword(s):  
Structural Design ◽  
Closed Loop ◽  
Space Exploration ◽  
Degree Of Freedom ◽  
Structural Symmetry ◽  
Potential Applications ◽  
Good Potential

The umbrella linkage is one of the most classical deployable mechanisms. This paper concentrates on topological structural design of a family of umbrella-shaped deployable mechanisms based on new two-layer and two-loop spatial linkage units. First, deployable units are developed systematically from two-layer and two-loop linkage with four revolute pair (4R) coupling chains. Then, mobile connection modes of the deployable units are established based on the conditions of one degree-of-freedom (DOF) and structural symmetry. Finally, umbrella-shaped deployable mechanisms are constructed based on the developed deployable units and the established mobile connection modes. Like umbrellas, the designed deployable mechanisms can be actuated in a simple and reliable way, and those mechanisms have good potential applications in the fields of architecture, manufacturing, space exploration, and recreation.

scholarly journals Numerical Approach to the Kinematic Analysis of Deployable Structures Forming a Closed Loop

2006 ◽  
Vol 220 (7) ◽  
pp. 1045-1056 ◽  
Author(s):  
W W Gan ◽  
S Pellegrino
Keyword(s):  
Systematic Study ◽  
Numerical Scheme ◽  
Closed Loop ◽  
Numerical Approach ◽  
The Other ◽  
Deployable Structures ◽  
Potential Applications ◽  
Motion Range ◽  
Polygonal Shape ◽  
Spatial Linkages

This article is concerned with spatial linkages forming a closed loop. In one extreme configuration (deployed), these linkages form a frame of polygonal shape, such as a square or a hexagon, and in the other extreme (folded), configuration form a tight bundle. Throughout their motion range, they have mobility one. These linkages have potential applications for next-generation deployable spacecraft structures. The article presents a systematic study of the kinematics of closed-loop structures with these special properties and a numerical scheme for simulating their deployment without making any assumptions about particular symmetry features. The proposed simulation technique is applied to three examples that show different behaviour during deployment.

Passive Thermal Management of Excess Heat from Electronic Devices

1989 ◽  
Vol 154 ◽  
Author(s):  
John J. Glatz ◽  
Juan F. Leon
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Heat Exchanger ◽  
Thermal Management ◽  
Electronic Devices ◽  
High Thermal Conductivity ◽  
Enabling Technology ◽  
Electronic Components ◽  
Potential Applications ◽  
General Scope

AbstractThermal management in the packaging of electronic components is fast becoming an enabling technology in the development of reliable electronics for a range of applications. The objective of the paper is to assess the feasibility of using advance high thermal conductivity pitch fiber (HTCPF) as a solution to some of the packaging problems. The general scope will include the following: identification of the candidate material and its potential applications; thermal management of the chip to board interface; thermal management of the heat within the multi-layer interconnect board (MIB); thermal management of the standard electronic module-format E (SEME); and heat transfer thru the enclosure to a remote heatsink/heat exchanger.

scholarly journals FEATURES OF PLASMA CHEMICAL ETCHING OF LITHIUM TANTALATE SUBSTRATE (LiTaO3)

2021 ◽  
pp. 188-190
Author(s):  
O.A. Fedorovich ◽  
O.V. Hladkovska ◽  
V.V. Hladkovskyi ◽  
A.F. Nedybaliuk
Keyword(s):  
Chemical Etching ◽  
Closed Loop ◽  
Etching Rate ◽  
Chemical Reactor ◽  
Optical Systems ◽  
Gas Mixture ◽  
Plasma Chemical ◽  
Plasma Chemical Reactor ◽  
Plasma Chemical Etching ◽  
Core Thickness

The results of researches of plasma chemical treatment of lithium monocrystalline tantalate (LiTaO3) from gas type, bias voltage (energy of chemically active ions) and from current of additional bias generator are given. A closed-loop electron drift plasma chemical reactor and gas mixtures containing Ar, Ar + ClС4, and Ar + SF6 were used for the experiments. It was found that the etching rate of LiTaO3 for the discharge in the gas mixture Ar + CCl4 is 14 times higher than all other mixtures that were used. It is shown that the proposed idea and approaches of LiTaO3 processing can be effectively applied for the production of optical systems with a minimum core thickness of about 2…3 μm.

scholarly journals Experimental learning of quantum states

2019 ◽  
Vol 5 (3) ◽  
pp. eaau1946 ◽  
Author(s):  
Andrea Rocchetto ◽  
Scott Aaronson ◽  
Simone Severini ◽  
Gonzalo Carvacho ◽  
Davide Poderini ◽  
...  
Keyword(s):  
Learning Theory ◽  
Computational Learning Theory ◽  
Quantum States ◽  
Optical Systems ◽  
Scaling Limits ◽  
Linear Scaling ◽  
Computational Learning ◽  
Experimental Demonstration ◽  
Experimental Learning ◽  
Number Of Particles

The number of parameters describing a quantum state is well known to grow exponentially with the number of particles. This scaling limits our ability to characterize and simulate the evolution of arbitrary states to systems, with no more than a few qubits. However, from a computational learning theory perspective, it can be shown that quantum states can be approximately learned using a number of measurements growing linearly with the number of qubits. Here, we experimentally demonstrate this linear scaling in optical systems with up to 6 qubits. Our results highlight the power of the computational learning theory to investigate quantum information, provide the first experimental demonstration that quantum states can be “probably approximately learned” with access to a number of copies of the state that scales linearly with the number of qubits, and pave the way to probing quantum states at new, larger scales.

Continuous Octane Monitoring

1970 ◽  
Vol 3 (9) ◽  
pp. 250-252
Author(s):  
J. H. McLaughlin ◽  
W. A. Bajek
Keyword(s):  
Octane Number ◽  
Continuous Monitoring ◽  
Closed Loop ◽  
Petroleum Industry ◽  
Closed Loop Control ◽  
Loop Control ◽  
Potential Applications ◽  
Refinery Process

Reliable, accurate, continuous monitoring of octane number has been a long-standing need of the petroleum industry. For this reason, UOP developed the Monirex Octane Monitor, an instrument that contains a relatively simple reactor rather than a complex knock engine. Principle of operation is discussed, and so are potential applications to closed-loop control of refinery process and blending operations.

Newly developed optical systems and their potential applications

2007 ◽  
Author(s):  
Guoliang Huang ◽  
Jiang Zhu ◽  
Cheng Deng ◽  
Shukuan Xu ◽  
Zhonghua Dong ◽  
...  
Keyword(s):  
Optical Systems ◽  
Potential Applications
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