Results 191 to 200 of about 583,413 (370)

Rock melting technology and geothermal drilling [PDF]

open access: yes
National awareness of the potential future shortages in energy resources has heightened interest in exploration and utilization of a variety of geothermal energy (GTE) reservoirs.
Rowley, J. C.
core   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai   +8 more
wiley   +1 more source

Identification and Reversible Optical Switching of NV+ Centers in Diamond

open access: yesAdvanced Functional Materials, EarlyView.
NV+ centers in diamond are predicted to coexist with NV0 and NV– centers, but direct experimental confirmation remains challenging. Using positron annihilation spectroscopy with in situ light illumination, a charge transition NV+/0 is observed at 1.234(8) eV.
Marcel Dickmann   +13 more
wiley   +1 more source

Laboratory research on degradable drilling-in fluid for complex structure wells in coalbed methane reservoirs

open access: yesPetroleum Exploration and Development, 2013
In order to address the contradiction between drilling safety and coalbed damage control, a degradable drilling-in fluid (DIF) was developed for complex structure wells in coalbed methane (CBM) reservoirs.
Dawei LIU   +5 more
doaj  

A NEW ARCHIMEDEAN DRILL [PDF]

open access: green, 1914
R MOTHERSOLE
openalex   +1 more source

Low‐Loss Far‐Infrared Surface Phonon Polaritons in Suspended SrTiO3 Nanomembranes

open access: yesAdvanced Functional Materials, EarlyView.
The low‐loss, highly confined, and thickness‐tunable surface phonon polaritons are demonstrated in the far‐infrared regime within transferable freestanding SrTiO3 membranes, achieving high figures of merit comparable to the previous record values from the vdW materials.
Konnor Koons   +8 more
wiley   +1 more source

New Mastoid Drill. [PDF]

open access: green, 1901
B. A. WASHBURN
openalex   +1 more source

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