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Article analysis:

The article provides a detailed description of the proposed terahertz Fourier transform spectrometer with no moving part, and its potential applications in various fields such as spectroscopy of biological materials like DNA or astrophysical applications. The authors provide analytical formulations and ray tracing simulations to demonstrate the performance of the proposed structure for extracting source spectrum, and they examine its performance for both monochromatic and broadband sources with more than 20% relative bandwidth.

The article appears to be reliable and trustworthy, as it provides detailed information about the proposed structure, its potential applications, analytical formulations, ray tracing simulations, and examination of its performance for different types of sources. However, there are some points that could be further explored in order to increase the trustworthiness of the article. For example, it would be beneficial if the authors provided more details about how they tested their proposed structure in practice (e.g., what type of equipment was used). Additionally, it would also be useful if they discussed possible risks associated with using their proposed structure (e.g., safety concerns). Furthermore, it would be beneficial if they discussed any potential limitations or drawbacks associated with their proposed structure (e.g., cost or complexity). Finally, it would also be useful if they discussed any potential future research directions related to their work (e.g., exploring new applications or improving existing ones).