Direct Measurement of the Contents, Thickness, and Internal Pressure of Molybdenum Disulfide Nanoblisters

Tan, Beng Hau; Zhang, Jun; Jin, Jing; Ooi, Chin Hong; He, Yi; Zhou, Renwu; Ostrikov, Kostya Ken; Nguyen, Nam‐Trung; An, Hongjie

doi:10.1021/acs.nanolett.0c00398

Cited by 19 publications

(27 citation statements)

References 40 publications

(70 reference statements)

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“…In Figure 4d we show the values of Γ for each investigated dome. Interestingly, the adhesion energy in spontaneous domes ranges between Γ sp = 7.6 − 22 meV/Å 2 , very close to previous experimental results, [ 29,57,69 ] and to the values theoretically predicted in. [ 70 ] It's worth noticing that the excellent agreement between the adhesion energy estimated here and in [ 29 ] is consistent with the investigation of domes with the same aspect ratio

(\frac{h}{R} \approx 0.16)

.…”

Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

“…A similar approach has been used in the past to measure osmotic pressure inside viral particles, [59] pressurized elastic shells of finite thickness, [60] as well as bubbles generated by transferring monolayers of 2D materials. [29,57] Here, we take a systematic approach using the membrane limit of the Föppl-von Karman equation in the case of indentation on pressurized ultrathin elastic sheets, clamped to the edge of a circular hole of footprint radius R. [54] In particular, Föppl and von Karman wrote a system of coupled, nonlinear, partial differential equations, establishing the relation between the following quantities: deflection of the plate, stress, Young's modulus of the material Y, geometrical dimensions of the plate (lateral size and thickness t), applied load, and flexural rigidity…”

Section: Nanoscale Measure Of Inner Pressure and Elastic Propertiesmentioning

confidence: 99%

“…Here, we use the Föppl-von Karman approach by introducing some novelty elements: first, we apply the macroscopic elastic model to the relatively new context of nanoscale deformations of ultrathin shells of 2D materials (MoS 2 bulged domes). [55][56][57] Second, we consider a modified formulation of the Föppl-von Karman equation (in the membrane limit), including the action of two loading forces: the internal gas pressure and the local indentation force. [54,57] Finally, we apply the Föppl-von Karman theoretical formulation to interpret the findings of AFM nanoindentation experiments on two different systems, i.e., the spontaneously formed and the engineered clamped domes.…”

Section: Introductionmentioning

confidence: 99%

“…[ 55–57 ] Second, we consider a modified formulation of the Föppl–von Karman equation (in the membrane limit), including the action of two loading forces: the internal gas pressure and the local indentation force. [ 54,57 ] Finally, we apply the Föppl–von Karman theoretical formulation to interpret the findings of AFM nanoindentation experiments on two different systems, i.e., the spontaneously formed and the engineered clamped domes.…”

Section: Introductionmentioning

confidence: 99%

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Nanoscale Measurements of Elastic Properties and Hydrostatic Pressure in H₂‐Bulged MoS₂ Membranes

Giorgio

Blundo

Pettinari

et al. 2020

Adv Materials Inter

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defects, and intercalations, [14-18] charge carrier doping, [19-21] charge transfer, [22,23] and pressure. [24] In addition to this, due to its intrinsic atomically smooth surface, it has been regarded as an ideal barrier for tunneling junctions. [25] Single-layer MoS 2 has been theoretically predicted to withstand a critical intrinsic stress and strain of σ c ≈ 24GPa and ε c ≈ 20% for biaxial tensile deformations (and higher for uniaxial), by employing first-principle calculations and investigating the stress-strain (σ − ε) relations up to the failure point. [26,27] On the other hand, experimental estimates of ε c in MoS 2 sheets subjected to nanoindentation (which has the effect of a biaxial tensile stress), lead to lower values, ε c = 6%-13%, [27,28] for measured σ c close to the expected one. The discrepancy in the experimental value of ε c is caused by the use of a linear σ − ε relation, σ = Yε, where Y is the material Young's modulus, in a no-longer linear regime (close to the breaking point). Recently, the excellent robustness and flexibility of MoS 2 and other 2D crystals has led to a keen interest into 2D-material-blisters, such as bubbles, wrinkles, and tents. Their spontaneous formation has been observed after transferring 2D materials on top of a substrate, or on stacks of van der Waals (vdW) heterostructures, and it has been attributed to the trapping of adsorbed water and/or hydrocarbons inevitably present on the individual layers before assembly. [29-31] Moreover, The combination of extremely high stiffness and bending flexibility with tunable electrical and optical properties makes van der Waals transition metal dichalcogenides appealing both for fundamental science and applied research. By taking advantage of localized H 2-bulged MoS 2 membranes, an innovative approach, based on atomic force microscopy nanoindentation, is demostrated and discussed here, aiming at measuring elastic and thermodynamic properties of nanoblisters made of 2D materials. The results, interpreted in the membrane limit of the Föppl-von Karman equation, lead to the quantification of the internal pressure and mole number of the trapped H 2 gas, as well as of the stretching modulus and adhesion energy of the MoS 2 membrane. The latter is discussed in the limit of strong (clamped and fully bonded interlayer interface) shear, as experimentally achieved in the investigated H 2-bulged 2D blisters. Moreover, this approach allows to quantify the stress, and consequently the strain, locally imposed to the MoS 2 membrane by the bulging of the domes.

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(\frac{h}{R} \approx 0.16)

.…”

Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Section: Nanoscale Measure Of Inner Pressure and Elastic Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Nanoscale Measurements of Elastic Properties and Hydrostatic Pressure in H₂‐Bulged MoS₂ Membranes

Giorgio

Blundo

Pettinari

et al. 2020

Adv Materials Inter

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Advances in Engineering Toolkits for Construction of Ultralow Disordered Van der Waals Heterostructures

Huang,

Shahrjerdi

2024

Adv Funct Materials

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The exploration of emerging quantum phenomena by stacking dissimilar atomic layered materials into van der Waals (vdW) heterostructures has driven the development of layer assembly techniques. Achieving ultralow disorder within these heterostructures is crucial for unlocking their novel physical properties. However, current fabrication methods for designer heterostructures have limitations in throughput, yield, and scalability. Over the past decade, engineering toolkits have evolved to address some of these challenges, but their adoption for fabricating designer heterostructures remains limited. In this review, an overview of these emerging engineering toolkits is provided, and examine their utility and limitations in achieving ultralow disordered heterostructures. It is hoped that the insights from this review article can help guide future research directions on advancing the fabrication process of designer heterostructures.

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Mechanical, Elastic, and Adhesive Properties of Two‐Dimensional Materials: From Straining Techniques to State‐of‐the‐Art Local Probe Measurements

Giorgio

Blundo

Pettinari

et al. 2022

Adv Materials Inter

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While static methods are often essential to make a material suited to a specific application, by permanently altering its properties, dynamic ones potentially enable their real-time modulation, paving the way for the development of reconfigurable devices.Within this context, strain engineering has historically been regarded as a "static" tuning method, which exploited the crystal deformations induced by the juxtaposition of materials with different lattice constants to manipulate the properties of semiconductor heterostructures [1] and improve the performance of electronic devices (e.g., CMOS-based logic technologies [2] ). In recent years, however, strain-engineering paradigms have begun to shift, leading to the development of new devices, capable of generating a dynamic modulation of the mechanical deformations induced in the active materials (and, thus, of their optoelectronic properties).Micro-and nano-electromechanical systems (MEMS and NEMS), for example, have long been used for sensing applications, thanks to their ability to transduce external stresses (e.g., applied pressure/weights, molecule adsorption,...) into electrical signals. In the opposite regime they are, at least in principle, 2D materials, such as graphene, hexagonal boron nitride (hBN), and transition-metal dichalcogenides (TMDs), are intrinsically flexible, can withstand very large strains (>10% lattice deformations), and their optoelectronic properties display a clear and distinctive response to an applied stress. As such, they are uniquely positioned both for the investigation of the effects of mechanical deformations on solid-state systems and for the exploitation of these effects in innovative devices. For example, 2D materials can be easily employed to transduce nanometric mechanical deformations into, e.g., clearly detectable electrical signals, thus enabling the fabrication of high-performance sensors; just as easily, however, external stresses can be used as a "knob" to dynamically control the properties of 2D materials, thereby leading to the realization of strain-tuneable, fully reconfigurable devices. Here, the main methods are reviewed to induce and characterize, at the nm level, mechanical deformations in 2D materials. After presenting the latest results concerning the mechanical, elastic, and adhesive properties of these unique systems, one of their most promising applications is briefly discussed: the realization of nano-electromechanical systems based on vibrating 2D membranes, potentially capable of operating at high frequencies (>100 MHz) and over a large dynamic range.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/admi.202102220.

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Direct Measurement of the Contents, Thickness, and Internal Pressure of Molybdenum Disulfide Nanoblisters

Cited by 19 publications

References 40 publications

Nanoscale Measurements of Elastic Properties and Hydrostatic Pressure in H₂‐Bulged MoS₂ Membranes

Nanoscale Measurements of Elastic Properties and Hydrostatic Pressure in H₂‐Bulged MoS₂ Membranes

Advances in Engineering Toolkits for Construction of Ultralow Disordered Van der Waals Heterostructures

Mechanical, Elastic, and Adhesive Properties of Two‐Dimensional Materials: From Straining Techniques to State‐of‐the‐Art Local Probe Measurements

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Direct Measurement of the Contents, Thickness, and Internal Pressure of Molybdenum Disulfide Nanoblisters

Cited by 19 publications

References 40 publications

Nanoscale Measurements of Elastic Properties and Hydrostatic Pressure in H2‐Bulged MoS2 Membranes

Nanoscale Measurements of Elastic Properties and Hydrostatic Pressure in H2‐Bulged MoS2 Membranes

Advances in Engineering Toolkits for Construction of Ultralow Disordered Van der Waals Heterostructures

Mechanical, Elastic, and Adhesive Properties of Two‐Dimensional Materials: From Straining Techniques to State‐of‐the‐Art Local Probe Measurements

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Nanoscale Measurements of Elastic Properties and Hydrostatic Pressure in H₂‐Bulged MoS₂ Membranes

Nanoscale Measurements of Elastic Properties and Hydrostatic Pressure in H₂‐Bulged MoS₂ Membranes