Tailoring of physical properties of RF-sputtered ZnTe films: role of substrate temperature

• Kafi Devi,
• Usha Rani,
• Arun Kumar,
• Divya Gupta and
• Sanjeev Aggarwal

Beilstein J. Nanotechnol. 2025, 16, 333–348, doi:10.3762/bjnano.16.25

• ]. The dielectric constant and the dielectric loss of the deposited ZnTe films exhibit a similar pattern and were also found to decrease with increasing substrate temperature (see below). Photoluminescence studies Photoluminescence (PL) studies were carried out to analyse the films’ electronic features

Enhancing mechanical properties of chitosan/PVA electrospun nanofibers: a comprehensive review

• Nur Areisman Mohd Salleh,
• Amalina Muhammad Afifi,
• Fathiah Mohamed Zuki and
• Hanna Sofia SalehHudin

Beilstein J. Nanotechnol. 2025, 16, 286–307, doi:10.3762/bjnano.16.22

• chitosan/PVA nanofibers using dielectric barrier discharge (DBD) plasma and reported enhanced wettability, mechanical properties, and biocompatibility of the fibers. The argon and oxygen plasma treatments led to significant cross-linking of the fibers, which improved tensile strength and Young’s modulus

Recent advances in photothermal nanomaterials for ophthalmic applications

• Jiayuan Zhuang,
• Linhui Jia,
• Chenghao Li,
• Rui Yang,
• Jiapeng Wang,
• Wen-an Wang,
• Heng Zhou and
• Xiangxia Luo

Beilstein J. Nanotechnol. 2025, 16, 195–215, doi:10.3762/bjnano.16.16

• the dielectric environment present during their synthesis (see below in Figure 2b) [48][49]. Because of the direct occurrence of photothermal conversion on the surfaces of LSPR metals and its rapid nature, combined with the metals’ inherent high thermal conductivity and strong hydrophilicity, LSPR

Theoretical study of the electronic and optical properties of a composite formed by the zeolite NaA and a magnetite cluster

• Joel Antúnez-García,
• Roberto Núñez-González,
• Vitalii Petranovskii,
• H’Linh Hmok,
• Armando Reyes-Serrato,
• Fabian N. Murrieta-Rico,
• Mufei Xiao and
• Jonathan Zamora

Beilstein J. Nanotechnol. 2025, 16, 44–53, doi:10.3762/bjnano.16.5

• evident that for energies below 6.8 eV (the value that corresponds to the zeolite bandgap), the value of ε2 is practically zero. Under such circumstances, the velocity (v) of electromagnetic wave propagation in a dielectric medium can be described as , where c is the speed of light in a vacuum. Within

Fabrication of hafnium-based nanoparticles and nanostructures using picosecond laser ablation

• Abhishek Das,
• Mangababu Akkanaboina,
• Jagannath Rathod,
• R. Sai Prasad Goud,
• Kanaka Ravi Kumar,
• Raghu C. Reddy,
• Ratheesh Ravendran,
• Katia Vutova,
• S. V. S. Nageswara Rao and
• Venugopal Rao Soma

Beilstein J. Nanotechnol. 2024, 15, 1639–1653, doi:10.3762/bjnano.15.129

• [8] compared to bulk Hf. HfO2 is a wide-bandgap (5.68 eV) material with a high dielectric constant (≈25) [9][10]. HfC has a very high melting point (≈3900 °C) and ranks among the hardest materials, with a Vickers hardness value exceeding 20 GPa [4][11]. The properties vary substantially depending on

Heterogeneous reactions in a HFCVD reactor: simulation using a 2D model

• Xochitl Aleyda Morán Martínez,
• José Alberto Luna López,
• Zaira Jocelyn Hernández Simón,
• Gabriel Omar Mendoza Conde,
• José Álvaro David Hernández de Luz and
• Godofredo García Salgado

Beilstein J. Nanotechnol. 2024, 15, 1627–1638, doi:10.3762/bjnano.15.128

• for the subsequent growth of the SiOx films. These SiOx films have interesting properties and embedded nanostructures, which make them excellent dielectric, optoelectronic, and electroacoustic materials for the fabrication of devices compatible with silicon-based technology. Keywords: 2D model

Lithium niobate on insulator: an emerging nanophotonic crystal for optimized light control

• Midhun Murali,
• Amit Banerjee and
• Tanmoy Basu

Beilstein J. Nanotechnol. 2024, 15, 1415–1426, doi:10.3762/bjnano.15.114

• high dielectric constant enables the fabrication of photonic crystals characterized by high-quality factors and minimal losses [17][18][19][20][21][22][23]. The combination of LiNbO3 and TiO2 in multi-stacked 1D PhC holds promise for optical applications [5]. The birefringence and electro-optic

Mn-doped ZnO nanopowders prepared by sol–gel and microwave-assisted sol–gel methods and their photocatalytic properties

• Cristina Maria Vlăduț,
• Crina Anastasescu,
• Silviu Preda,
• Oana Catalina Mocioiu,
• Simona Petrescu,
• Jeanina Pandele-Cusu,
• Dana Culita,
• Veronica Bratan,
• Ioan Balint and
• Maria Zaharescu

Beilstein J. Nanotechnol. 2024, 15, 1283–1296, doi:10.3762/bjnano.15.104

• dielectric properties of material [17]. Therefore, instantaneous decomposition of the precursors occurs, leading to the formation of a supersaturated solution. Consequently, appropriate conditions for obtaining materials with well-defined properties (i.e., monodispersed nanoparticles from rapid and brief

Quantum-to-classical modeling of monolayer Ge₂Se₂ and its application in photovoltaic devices

• Anup Shrivastava,
• Shivani Saini,
• Dolly Kumari,
• Sanjai Singh and
• Jost Adam

Beilstein J. Nanotechnol. 2024, 15, 1153–1169, doi:10.3762/bjnano.15.94

• coefficient and a high dielectric constant inspired the design of a monolayer Ge2Se2-based solar cell, exhibiting a high open circuit voltage of Voc = 1.11 V, a fill factor of 87.66%, and more than 28% power conversion efficiency at room temperature. Our findings advocate monolayer Ge2Se2 for various

• wavelength are summarized in Figure 5, depicting the dielectric function εr (real and imaginary parts) and the refractive index n for monolayer Ge2Se2. The real and imaginary components of the dielectric function correspond to dispersive and absorption effects of the material. We observe that the

• investigated structure exhibits strongly anisotropic optical properties for which the parametric values depend on the direction of the chosen plane. Dielectric function and absorption coefficient The static dielectric constants (real part of εr at ω = 0), along the in-plane (XX) and out-of-plane (ZZ) direction

Unveiling the potential of alginate-based nanomaterials in sensing technology and smart delivery applications

• Shakhzodjon Uzokboev,
• Khojimukhammad Akhmadbekov,
• Ra’no Nuritdinova,
• Salah M. Tawfik and
• Yong-Ill Lee

Beilstein J. Nanotechnol. 2024, 15, 1077–1104, doi:10.3762/bjnano.15.88

• ]. The polymer film’s soil moisture sensing capabilities were proved by measuring the dielectric constant of the polymer with soil samples containing low and high moisture (Figure 7). According to the results, the polymer film has excellent moisture sensing characteristics at frequencies as low as a few

Signal generation in dynamic interferometric displacement detection

• Knarik Khachatryan,
• Simon Anter,
• Michael Reichling and
• Alexander von Schmidsfeld

Beilstein J. Nanotechnol. 2024, 15, 1070–1076, doi:10.3762/bjnano.15.87

• a Michelson interferometer. Experiments reported here are performed with the dielectric/vacuum interface of the bare fiber end acting as the first mirror and a metal-coated silicon cantilever as the second mirror. We keep the fiber–cantilever distance d always large enough to work in the Michelson

• beams with almost identical power. The first part is directed to a power meter for control purposes, while the second part is guided to the interferometer in the UHV [11]. The fiber end in the interferometer is carefully cleaved to achieve high optical quality for the dielectric/vacuum interface having

Recent progress on field-effect transistor-based biosensors: device perspective

• Billel Smaani,
• Fares Nafa,
• Mohamed Salah Benlatrech,
• Ismahan Mahdi,
• Hamza Akroum,
• Mohamed walid Azizi,
• Khaled Harrar and
• Sayan Kanungo

Beilstein J. Nanotechnol. 2024, 15, 977–994, doi:10.3762/bjnano.15.80

• FET-based biosensors. Finally, this article proposes intriguing avenues for further research on the topology of FET-based biosensors. Keywords: biomolecule detection; biosensors; charge modulation; dielectric modulation; field-effect transistor; Review 1 Introduction In recent years, biosensor

• is known as dielectric modulation, where a nanoscale gap cavity is introduced in either the gate metal or gate insulator region. The biomolecules are immobilized in this cavity region functionalized with bioreceptor elements, where the presence of the specific target biomolecule alters the effective

• dielectric constant inside the cavity resulting in a gating effect modulation and subsequent alteration in channel conductivity. This leads to a change in both threshold voltage and drain current, manifesting the presence of target biomolecules in the cavity, and the corresponding sensitivity is defined

Electrospun nanofibers: building blocks for the repair of bone tissue

• Tuğrul Mert Serim,
• Gülin Amasya,
• Tuğba Eren-Böncü,
• Ceyda Tuba Şengel-Türk and
• Ayşe Nurten Özdemir

Beilstein J. Nanotechnol. 2024, 15, 941–953, doi:10.3762/bjnano.15.77

• , concentration and molecular weight of the polymer, solvent or solvent mixture, surface tension, conductivity, dielectric constant, and environmental parameters are parameters that must be optimized in the electrospinning process. Voltage Voltage is the parameter that most affects the shape of the droplet from

• fewer beads are formed [79]. Dielectric constant The dielectric constant refers to the ability of a substance to hold an electric charge in the region where an electric field is applied. The dielectric constant of a polymer liquid mainly depends on the solvent used. For the electrospinning process, the

• dielectric constant must be high enough [74][75]. With an increase in dielectric constant fewer beads and smaller fiber diameters are formed [80]. Environmental parameters Temperature Temperature affects the viscosity and spinnability of polymer liquids and the thickness of the collected fiber mats

Exploring surface charge dynamics: implications for AFM height measurements in 2D materials

• Mario Navarro-Rodriguez,
• Andres M. Somoza and
• Elisa Palacios-Lidon

Beilstein J. Nanotechnol. 2024, 15, 767–780, doi:10.3762/bjnano.15.64

• Equation 8 is entirely a consequence of a non-negligible σs; if we set σs = 0, the time evolution cancels, and we recover the expected solution for a dielectric interface. When the tip oscillates or an AC voltage is applied, the oscillating electric field produces Joule dissipation at the surface as well

Level set simulation of focused ion beam sputtering of a multilayer substrate

• Alexander V. Rumyantsev,
• Nikolai I. Borgardt,
• Roman L. Volkov and
• Yuri A. Chaplygin

Beilstein J. Nanotechnol. 2024, 15, 733–742, doi:10.3762/bjnano.15.61

• semiconductor heterostructures [13]. Metal and dielectric layers can be used as hard masks for achieving high resolution and throughput of the FIB nanofabrication process [14]. Modification of integrated circuits [15] is an industrially relevant application of multilayer structure processing. Effective

Reduced subthreshold swing in a vertical tunnel FET using a low-work-function live metal strip and a low-k material at the drain

• Kalai Selvi Kanagarajan and
• Dhanalakshmi Krishnan Sadhasivan

Beilstein J. Nanotechnol. 2024, 15, 713–718, doi:10.3762/bjnano.15.59

• research paper, a vertical tunnel field-effect transistor (TFET) structure containing a live metal strip and a material with low dielectric constant is designed, and its performance metrics are analyzed in detail. Low-k SiO2 is incorporated in the channel–drain region. A live molybdenum metal strip with

• low work function is placed in a high-k HfO2 layer in the source–channel region. The device is examined by the parameters Ioff, subthreshold swing, threshold voltage, and Ion/Ioff ratio. The introduction of a live metal strip in the dielectric layer closer to the source–channel interface results in a

• excellent improvement in TFETs, an on-current of 1.00 × 10−5 A/μm, an Ion/Ioff ratio of 7.14 × 1011, and a threshold voltage of 0.28 V. Keywords: dual low-work-function live strip (DLWLS); low-k dielectric spacer; low-work-function live strip (LWLS); Miller capacitance; molybdenum; subthreshold swing (SS

Laser synthesis of nanoparticles in organic solvents – products, reactions, and perspectives

• Theo Fromme,
• Sven Reichenberger,
• Katharine M. Tibbetts and
• Stephan Barcikowski

Beilstein J. Nanotechnol. 2024, 15, 638–663, doi:10.3762/bjnano.15.54

• spectra at long pulse durations and high irradiance [84]. This approach provides the essential understanding of the dependence of electron energy spectra on laser pulse duration, wavelength, and irradiance, which opens pathways for inducing energy-specific molecular modifications in dielectric media, such

CdSe/ZnS quantum dots as a booster in the active layer of distributed ternary organic photovoltaics

• Gabriela Lewińska,
• Piotr Jeleń,
• Zofia Kucia,
• Maciej Sitarz,
• Łukasz Walczak,
• Bartłomiej Szafraniak,
• Jerzy Sanetra and
• Konstanty W. Marszalek

Beilstein J. Nanotechnol. 2024, 15, 144–156, doi:10.3762/bjnano.15.14

• were applied to gold foils. A system equipped with a Solartron 1260A frequency response analyzer, a Solartron 1296A dielectric interface, and a supervisory computer was prepared to determine the impedance parameters of the obtained structures. The impedance characteristics of the obtained samples were

• (point by point). The layer under consideration was first pure quantum dots and then a ternary system with PC71BM and P3HT. The refractive index (n) of the quantum dots thin film and the extinction coefficient (k) were estimated using the Lorentz model modified by Tauc. The complex dielectric function is

• related to the complex refractive index n by the equation in the Tauc–Lorentz model: where ε1, ε2 are, respectively, the real and imaginary parts of the dielectric function, n is the refractive index, and k is the extinction coefficient. The real part of the Tauc–Lorentz dielectric function is given as

Measurements of dichroic bow-tie antenna arrays with integrated cold-electron bolometers using YBCO oscillators

• Leonid S. Revin,
• Dmitry A. Pimanov,
• Alexander V. Chiginev,
• Anton V. Blagodatkin,
• Viktor O. Zbrozhek,
• Andrey V. Samartsev,
• Anastasia N. Orlova,
• Dmitry V. Masterov,
• Alexey E. Parafin,
• Victoria Yu. Safonova,
• Anna V. Gordeeva,
• Andrey L. Pankratov,
• Leonid S. Kuzmin,
• Anatolie S. Sidorenko,
• Silvia Masi and
• Paolo de Bernardis

Beilstein J. Nanotechnol. 2024, 15, 26–36, doi:10.3762/bjnano.15.3

• /20 nm was deposited with an electron-beam evaporation machine. After lift-off, a double layer of MMA and ARP electron resist was deposited, which is necessary to form an aluminum oxide dielectric layer without breaking the vacuum. Then the electron lithography was made, but the resist was not

A combined gas-phase dissociative ionization, dissociative electron attachment and deposition study on the potential FEBID precursor [Au(CH₃)₂Cl]₂

• Elif Bilgilisoy,
• Ali Kamali,
• Thomas Xaver Gentner,
• Gerd Ballmann,
• Sjoerd Harder,
• Hans-Peter Steinrück,
• Hubertus Marbach and
• Oddur Ingólfsson

Beilstein J. Nanotechnol. 2023, 14, 1178–1199, doi:10.3762/bjnano.14.98

• ; quantum chemical calculation; ultrahigh vacuum; Introduction In recent years, gold nanostructures have received much attention owing to their dielectric properties [1], their biocompatibility [2], and their electrical properties [3][4], which enable a multitude of exciting applications in the field of

A multi-resistance wide-range calibration sample for conductive probe atomic force microscopy measurements

• François Piquemal,
• Khaled Kaja,
• Pascal Chrétien,
• José Morán-Meza,
• Frédéric Houzé,
• Christian Ulysse and
• Abdelmounaim Harouri

Beilstein J. Nanotechnol. 2023, 14, 1141–1148, doi:10.3762/bjnano.14.94

• versatility and high resolution in probing the local conductivity of materials, C-AFM has been extensively used in studying semiconductors [6][7], two-dimensional materials [8][9][10], memristive devices [11][12][13][14][15], photoelectric systems [16][17][18], dielectric films [19][20][21][22][23], molecular

Nanoarchitectonics of photothermal materials to enhance the sensitivity of lateral flow assays

• Elangovan Sarathkumar,
• Rajasekharan S. Anjana and
• Ramapurath S. Jayasree

Beilstein J. Nanotechnol. 2023, 14, 988–1003, doi:10.3762/bjnano.14.82

• LSPR effect highly depends on size, shape, composition, interparticle distance, dielectric constant, and surrounding medium of the particles [36][37]. While Pt, Ag, and Au particles all exhibit photothermal properties, Au nanoparticles are commonly used for photothermal applications. By changing the

Silver-based SERS substrates fabricated using a 3D printed microfluidic device

• Phommachith Sonexai,
• Minh Van Nguyen,
• Bui The Huy and
• Yong-Ill Lee

Beilstein J. Nanotechnol. 2023, 14, 793–803, doi:10.3762/bjnano.14.65

• ], porous aluminum oxide [38], and semiconductors [39] have been reported. Dielectric and semiconductor substrates, such as ZnO nanowires, silicon nanowires, and porous silicon (PS), are particularly popular because of their larger contribution to the amplification of the Raman signal and longer shelf life

Humidity-dependent electrical performance of CuO nanowire networks studied by electrochemical impedance spectroscopy

• Jelena Kosmaca,
• Juris Katkevics,
• Jana Andzane,
• Raitis Sondors,
• Liga Jasulaneca,
• Raimonds Meija,
• Kiryl Niherysh,
• Yelyzaveta Rublova and
• Donats Erts

Beilstein J. Nanotechnol. 2023, 14, 683–691, doi:10.3762/bjnano.14.54

• dependence of log Z on log f in the whole frequency range (Figure 2c) and the phase angle value of ca. 80° in the frequency range of 1–1000 Hz (Figure 2d) indicate that the electrochemical processes on the surface of the sample at RH < 50% result in a capacitive behaviour with good dielectric properties. The

Investigations on the optical forces from three mainstream optical resonances in all-dielectric nanostructure arrays

• Guangdong Wang and
• Zhanghua Han

Beilstein J. Nanotechnol. 2023, 14, 674–682, doi:10.3762/bjnano.14.53

• within the confined fields of three optical resonances supported by all-dielectric nanostructure arrays, including toroidal dipole (TD), anapoles, and quasi-bound states in continuum (quasi-BIC) resonances. By elaborately designing the geometry of a slotted-disk array, three different resonances can be

• large contrast in the optical forces generated with these resonances is attributed to a higher electromagnetic field enhancement provided by the quasi-BIC. These results suggest that the quasi-BIC resonance is preferred when one employs all-dielectric nanostructure arrays for the trapping and

• manipulation of nanoparticles by optical forces. It is important to use low-power lasers to achieve efficient trapping and avoid any harmful heating effects. Keywords: all-dielectric nanostructures; anapole; optical force; quasi-bound states in the continuum; toroidal dipole; Introduction Optical forces have