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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…

Adaptation and Self-Organizing Systems · Physics 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…

Mesoscale and Nanoscale Physics · Physics 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…

Quantum Physics · Physics 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)…

Optics · Physics 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…

Mesoscale and Nanoscale Physics · Physics 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…

Quantitative Methods · Quantitative Biology 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.…

Chemical Physics · Physics 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…

Neurons and Cognition · Quantitative Biology 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…

Mesoscale and Nanoscale Physics · Physics 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…

Soft Condensed Matter · Physics 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…

Quantum Physics · Physics 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…

Mesoscale and Nanoscale Physics · Physics 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…

Statistical Mechanics · Physics 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…

Chemical Physics · Physics 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…

Neurons and Cognition · Quantitative Biology 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…

Soft Condensed Matter · Physics 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.…

Mesoscale and Nanoscale Physics · Physics 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…

Signal Processing · Electrical Eng. & Systems 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…

Atomic Physics · Physics 2022-06-28 Andres F. Ordonez , Olga Smirnova