Creation of nuclear isomers (later ages will focus less on "normal" chemistry, and focus more on nuclear & quantum chemistry to get desired materials)
Could be used heavily to try to stabilize superheavy elements (probably not realistic)
Creation of something smaller than nanobots - femtobots made of nucleons rather than molecules, which can carry out the same processes as nanobots but on an atomic scale (possibly creating exotic nuclei), or can self-replicate and destroy the universe, similar to what is seen in Kurzgestagst or whatever he was called again's video on strange matter
Ferrofluids can also be used for late game machine parts. One use is pumping stuff in places where there is no gravity. It also has an interesting production method (all info is in the link below)
https://en.wikipedia.org/wiki/Ferrofluid
Bose Einstein condensates could be buffed since cooling stuff down to a few nanokelvins is a "bit" more complicated than just using a canning machine
Femtotechnology
Creation of nuclear isomers (later ages will focus less on "normal" chemistry, and focus more on nuclear & quantum chemistry to get desired materials)
Creation of something smaller than nanobots - femtobots made of nucleons rather than molecules, which can carry out the same processes as nanobots but on an atomic scale (possibly creating exotic nuclei), or can self-replicate and destroy the universe, similar to what is seen in Kurzgestagst or whatever he was called again's video on strange matter
Megastructures
Matryoshka brain (tier above quantum computer multiblock)
Uses for laser system
Transportation of very small objects using lasers
Extremely short pulse length lasers (https://en.wikipedia.org/wiki/Mode_locking#Applications)
Materials
Aerographene can be used for late-game machine parts. Probably "borrow" recipe from GCYL https://phys.org/news/2021-11-nanomaterial-aerographene-extremely-powerful.html
Ferrofluids can also be used for late game machine parts. One use is pumping stuff in places where there is no gravity. It also has an interesting production method (all info is in the link below) https://en.wikipedia.org/wiki/Ferrofluid
Bose Einstein condensates could be buffed since cooling stuff down to a few nanokelvins is a "bit" more complicated than just using a canning machine
Magnetic monopole particles for end-game magnets
Neutronium (but realistic)
Cosmic strings
Crosslinked Polyethylene (Synthesis using electron beams) (found by Tech22)
Exotic compounds made by forming molecules with both antimatter and matter (very cursed)
Exotic nuclei (cool but probably useless)
Superheavy elements (and extended periodic table elements)
Wire Materials
BSCCO Superconductor - Synthesis: https://patents.google.com/patent/US5468566A/en
Room-temperature superconductors
Metallic Hydrogen, Carbonaceous Sulfur Hydride, Lanthanum Decahydride, Actinium Decahydride
https://en.wikipedia.org/wiki/Metallic_hydrogen https://en.wikipedia.org/wiki/Carbonaceous_sulfur_hydride https://en.wikipedia.org/wiki/Lanthanum_decahydride https://en.wikipedia.org/wiki/Polyhydride#Superconduction
Diamond Anvil Cells are machines used to create these materials using ridiculous amounts of pressure, up to 500 GPa.
Recipe Chains (Note: Compress these recipes into an un-tedious but complex chain, and replace some inputs with interesting-to-get stuff)
Uber reaction (based on a sh!tpost article, but replace the output with an endgame chemical) https://cdn.discordapp.com/attachments/836440631425105920/976642644556017664/uber_reaction_png.png
Get out of my head reaction (replace output with an endgame chemical) https://cdn.discordapp.com/attachments/836440631425105920/976639284029308928/uranyl_thia-crown_ether_perbromate_complex.png
Estrogen chain (add it for the meme) (or for making transgender mobs I guess) https://cdn.discordapp.com/attachments/836440631425105920/926649735203401758/Estrogen.png
Cursed realistic TRUEX process applied to hyper fuel https://cdn.discordapp.com/attachments/836440631425105920/926649822402977843/Nq_Fuel_TRUEX.png
https://media.discordapp.net/attachments/704379576742183132/893072377561358407/nqreactor_rework.drawio.png
Electrodes and OLEDs (for end-game screens) https://cdn.discordapp.com/attachments/836440631425105920/926649690513096735/Electrides.png
https://cdn.discordapp.com/attachments/836440631425105920/926648398109638706/OLED.png