Natsui, RyusukeRyusukeNatsuiShimizu, HiroshiHiroshiShimizuNakanishi, YusukeYusukeNakanishiLiu, ZhengZhengLiuShimamura, AkitoAkitoShimamuraTUAN HUNG NGUYENLin, YungchangYungchangLinEndo, TakahikoTakahikoEndoPu, JiangJiangPuKikuchi, IoriIoriKikuchi2025-09-242025-09-242023https://www.scopus.com/inward/record.uri?eid=2-s2.0-85149045922&doi=10.1021%2Facsnano.2c10997&partnerID=40&md5=416301ab0cdbcfe9a5d7ef0804fdd62fhttps://scholars.lib.ntu.edu.tw/handle/123456789/732301One-dimensional (1D) conducting materials are of great interest as potential building blocks for integrated nanocircuits. Ternary 1D transition-metal chalcogenides, consisting of M<inf>6</inf>X<inf>6</inf> wires with intercalated A atoms (M = Mo or W; X = S, Se, or Te; A = alkali or rare metals, etc.), have attracted much attention due to their 1D metallic behavior, superconductivity, and mechanical flexibility. However, the conventional solid-state reaction usually produces micrometer-scale bulk crystals, limiting their potential use as nanoscale conductors. Here we demonstrate a versatile method to fabricate indium (In)-intercalated W<inf>6</inf>Te<inf>6</inf> (In-W<inf>6</inf>Te<inf>6</inf>) bundles with a nanoscale thickness. We first prepared micrometer-long, crystalline bundles of van der Waals W<inf>6</inf>Te<inf>6</inf> wires using chemical vapor deposition and intercalated In into the crystal via a vapor-phase reaction. Atomic-resolution electron microscopy revealed that In atoms were surrounded by three adjacent W<inf>6</inf>Te<inf>6</inf> wires. First-principles calculations suggested that their wire-by-wire stacking can transform through postgrowth intercalation. Individual In-W<inf>6</inf>Te<inf>6</inf> bundles exhibited metallic behavior, as theoretically predicted. We further identified the vibrational modes by combining polarized Raman spectroscopy and nonresonant Raman calculations.Angle-resolved Polarized Raman SpectroscopyIntercalationNanowireOne-dimensional Van Der Waals MaterialTransition Metal ChalcogenideAtomsChalcogenidesChemical Vapor DepositionIndiumIndium CompoundsIntercalationMicrometersNanotechnologyRaman SpectroscopySolid State ReactionsTransition MetalsWireAngle-resolvedAngle-resolved Polarized Raman SpectroscopyMetallic BehaviorsOne-dimensionalOne-dimensional Van Der Waal MaterialPolarized Raman SpectroscopyTransition Metal ChalcogenidesTransition-metal ChalcogenidesVan Der WaalVapor PhaseVan Der Waals Forcesjournal article10.1021/acsnano.2c109972-s2.0-85149045922