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The olfactory system is constantly solving pattern-recognition problems by the creation of a large space to codify odour representations and optimizing their distribution within it. A model of the Olfactory Bulb was developed by Z. Li and…

适应与自组织系统 · 物理学 2019-05-16 Alexandra Pinto

We present a detailed analysis of the Aharonov-Bohm interference oscillations manifested through transmission of an electron in a mesoscopic ring with a magnetic impurity atom inserted in one of its arms. The electron interacts with the…

介观与纳米尺度物理 · 物理学 2007-05-23 Sandeep K. Joshi , Debendranath Sahoo , A. M. Jayannavar

We propose an accurate and convenient method to achieve 100\% discrimination of chiral molecules with Lewis-Riesenfeld invariant. By reversely designing the pulse scheme of handed resolution, we obtain the parameters of the three-level…

量子物理 · 物理学 2023-05-24 Hang Xu , Xue-Ke Song , Dong Wang , Liu Ye

The practical applications of chiral discrimination are usually limited by the weak chiral response of enantiomers and the high complexity of detection methods. Here, we propose to use the C lines (i.e., lines of polarization singularities)…

光学 · 物理学 2022-03-22 Shiqi Jia , Jie Peng , Yuqiong Cheng , Shubo Wang

We present the first microscopic model for chirality-induced spin selectivity effect in electron-transfer, in which the internal degrees of freedom of the chiral bridge are explicitly included. By exactly solving this model on short chiral…

介观与纳米尺度物理 · 物理学 2024-10-08 A. Chiesa , E. Garlatti , M. Mezzadri , L. Celada , R. Sessoli , M. R. Wasielewski , R. Bittl , P. Santini , S. Carretta

The olfactory system of male moths is exquisitely sensitive to pheromones emitted by females and transported in the environment by atmospheric turbulence. Moths respond to minute amounts of pheromones and their behavior is sensitive to the…

定量方法 · 定量生物学 2014-11-14 Antonio Celani , Emmanuel Villermaux , Massimo Vergassola

A recently proposed theory of chiral discrimination in NMR spectroscopy based on the detection of a molecular electric polarization $\mathbf{P}$ rotating in a plane perpendicular to the NMR magnetic field [A. D. Buckingham, J. Chem. Phys.…

化学物理 · 物理学 2016-04-26 Alessandro Soncini , Simone Calvello

Olfactory systems use a small number of broadly sensitive receptors to combinatorially encode a vast number of odors. We propose a method of decoding such distributed representations by exploiting a statistical fact: receptors that do not…

神经元与认知 · 定量生物学 2021-09-01 Vijay Singh , Martin Tchernookov , Vijay Balasubramanian

Dissipative and unitary processes define the evolution of a many-body system. Their interplay gives rise to dynamical phase transitions and can lead to instabilities. We discovered a non-stationary state of chiral nature in a synthetic…

In this work we manifest that an electrostatic disorder in conducting systems with broken time reversal symmetry universally leads to a chiral ordering of the electron gas giving rise to skyrmion-like textures in spatial distribution of the…

介观与纳米尺度物理 · 物理学 2019-03-08 K. S. Denisov , I. V. Rozhansky , N. S. Averkiev , E. Lahderanta

Chirality occupies a central role in fields ranging from biological self-assembly to the design of optical metamaterials. The definition of chirality, as given by Lord Kelvin, associates chirality with the lack of mirror symmetry: the…

软凝聚态物质 · 物理学 2014-01-21 Efi Efrati , William T. M. Irvine

We predict a discriminatory interaction between a chiral molecule and an achiral molecule which is mediated by a chiral body. To achieve this, we generalize the van der Waals interaction potential between two ground-state molecules with…

量子物理 · 物理学 2017-05-19 Pablo Barcellona , Hassan Safari , A. Salam , Stefan Yoshi Buhmann

In this paper we introduce and study the correlation functions of a chiral one-dimensional electron model intended to qualitatively represent narrow Hall bars separated into left and right sections by a penetrable barrier. The model has two…

介观与纳米尺度物理 · 物理学 2009-11-11 Emiliano Papa , Allan H. Macdonald

Diffusive transport is characterized by a diffusivity tensor which may, in general, contain both a symmetric and an antisymmetric component. Although the latter is often neglected, we derive Green-Kubo relations showing it to be a general…

统计力学 · 物理学 2022-03-08 Cory Hargus , Jeffrey M. Epstein , Kranthi K. Mandadapu

Predicting olfactory perception directly from molecular structure is central to fragrance design that plays a role in a wide range of industries, such as perfumery, food and beverage, and health care. Among olfactory attributes, odor…

化学物理 · 物理学 2026-05-18 Peter Fichtelmann , Julia Westermayr

Animals smelling in the real world use a small number of receptors to sense a vast number of natural molecular mixtures, and proceed to learn arbitrary associations between odors and valences. Here, we propose a new interpretation of how…

神经元与认知 · 定量生物学 2017-07-10 Kamesh Krishnamurthy , Ann M Hermundstad , Thierry Mora , Aleksandra M Walczak , Vijay Balasubramanian

The migration of helical particles in viscous shear flows plays a crucial role in chiral particle sorting. Attaching a non-chiral head to a helical particle leads to a rheotactic torque inducing particle reorientation. This phenomenon is…

软凝聚态物质 · 物理学 2023-10-18 Andreas Zöttl , Francesca Tesser , Daiki Matsunaga , Justine Laurent , Olivia Du Roure , Anke Lindner

Nonlinear electrical conduction primarily mediated by an orbital texture is observed in chiral semiconductor Te. We determine the enantiospecific sign of the nonlinear conductance and identify anomalies in its carrier-density dependence.…

介观与纳米尺度物理 · 物理学 2024-07-15 Suguru Okumura , Ryutaro Tanaka , Daichi Hirobe

Olfaction sensing in autonomous robotics faces challenges in dynamic operations, energy efficiency, and edge processing. It necessitates a machine learning algorithm capable of managing real-world odor interference, ensuring resource…

信号处理 · 电气工程与系统科学 2024-07-09 Rizwana Kausar , Fakhreddine Zayer , Jaime Viegas , Jorge Dias

We discuss how tensorial observables, available in photoelectron angular distributions resulting from interaction between isotropic chiral samples and cross polarized $\omega$-$2\omega$ bichromatic fields, allow for chiral discrimination…

原子物理 · 物理学 2022-06-28 Andres F. Ordonez , Olga Smirnova