Multi-Quartz Enhanced Photoacoustic Spectroscopy with Different Acoustic Microresonator Configurations

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td align="left"> </td><td align="center">QTF #3</td><td align="center">QTF #4</td><td align="center">Multi-QTF</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td align="left">Resonance frequency (Hz)</td><td align="center">32744.93</td><td align="center">32746.96</td><td align="center">32745.68</td></tr><tr><td align="left"><svg height="10.7866pt" id="M21" style="vertical-align:-2.150701pt" version="1.1" viewbox="-0.0498162 -8.6359 9.52083 10.7866" width="9.52083pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M699 368C699 549 574 666 407 666C186 666 23 488 23 277C23 113 129 -3 288 -13L307 -26C431 -111 501 -139 533 -147C559 -154 613 -163 658 -164L666 -141C597 -111 507 -66 430 -11L416 -1C580 42 699 190 699 368ZM601 371C601 227 518 54 381 22L354 40L278 24C175 47 120 145 120 269C120 451 235 631 398 631C540 631 601 521 601 371Z" id="g113-82"></path><glyph.data ascent="3473" descent="-2876" horiz-adv-x="722" vert-adv-y="722"></glyph.data></g></svg> value</td><td align="center">5384</td><td align="center">5540</td><td align="center">5714</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Parameters of multi-QTF based “on-beam” spectrophone (Figure <a href="../fig4/#d">4(d)</a>).

Journal of Spectroscopy

tab2

Table 2

Table 2: Multi-Quartz Enhanced Photoacoustic Spectroscopy with Different Acoustic Microresonator Configurations 